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GEM died on my Excursion. Ford techs in here
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<blockquote data-quote="hotcobra03" data-source="post: 16321239" data-attributes="member: 53096"><p>Gem diagnostic codes</p><p></p><p><span style="font-size: 22px"><strong>Diagnostic Trouble Code Chart</strong></span></p><p></p><p>SECTION 419-10: Multifunction Electronic Modules</p><p></p><p> </p><p>2001 F-Super Duty 250-550/Excursion/F-53 Motorhome Chassis Workshop Manual</p><p></p><p> </p><p>DIAGNOSIS AND TESTING</p><p></p><p> </p><p>Procedure revision date: 06/21/2000</p><p></p><p> </p><p><strong>Diagnostic Trouble Code Chart</strong></p><p></p><p><strong>DTC</strong> <strong>Description</strong> <strong>Source</strong> <strong>Action</strong></p><p>B1201 Fuel Sender Circuit Failure OTC REFER to Information and Message Center.</p><p>B1203 Fuel Sender Circuit Short to Battery OTC REFER to Information and Message Center.</p><p>B1208 EIC Switch-1 Assembly Circuit Short to Ground OTC REFER to Information and Message Center.</p><p>B1213 Anti-Theft Number of Programmed Keys is Below Minimum PATS module REFER to Anti-Theft — PATS.</p><p>B1217 Horn Relay Coil Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1218 Horn Relay Coil Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1231 Longitudinal Acceleration Threshold Exceeded RCM REFER to Supplemental Restraint System.</p><p>B1232 Antenna Not Connected PATS module REFER to Anti-Theft — PATS.</p><p>B1240 Wiper Washer Rear Pump Relay Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1241 Wiper Washer Rear Pump Relay Circuit Short to Battery GEM REFER to Wipers and Washers.</p><p>B1243 Express Window Down Switch Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1255 Air Temperature External Sensor Circuit Open OTC REFER to Information and Message Center.</p><p>B1299 Power Supply Sensor Circuit Short to Ground Parking Aid module REFER to Parking Aid.</p><p>B1300 Power Door Lock Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B1302 Accessory Delay Relay Coil Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B1304 Accessory Delay Relay Coil Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1310 Power Door Unlock Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1317 Battery Voltage High GEM REFER to Charging System — General Information.</p><p>B1318 Battery Voltage Low GEM REFER to Charging System — General Information.</p><p>B1318 Battery Voltage Low RCM REFER to Supplemental Restraint System.</p><p>B1322 Door Ajar LF Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1323 Door Ajar Lamp Circuit Failure GEM REFER to Instrument Cluster.</p><p>B1325 Door Ajar Lamp Circuit Short to Battery GEM REFER to Instrument Cluster.</p><p>B1330 Door Ajar RF Circuit Short to Ground GEM REFER to Interior Lighting.</p><p>B1334 Decklid Ajar Rear Door Circuit Short to Ground GEM REFER to Interior Lighting.</p><p>B1338 Door Ajar RR Circuit Short to Ground GEM REFER to Interior Lighting.</p><p>B1340 Chime Input Request Circuit Short to Ground GEM REFER to Warning Devices.</p><p>B1342 ECU is Defective ABS CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new ABS module. REFER to Section 206-09. CLEAR the DTCs. REPEAT the self-test.</p><p>B1342 ECU is Defective GEM CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new GEM. REFER to Generic Electronic Module (GEM) in this section. CLEAR the DTCs. REPEAT the self-test.</p><p>B1342 ECU is Defective OTC REFER to Information and Message Center.</p><p>B1342 ECU is Defective Parking Aid module REFER to Parking Aid.</p><p>B1342 ECU is Defective RABS CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new RABS. REFER to Section 206-09. CLEAR the DTCs. REPEAT the self-test.</p><p>B1342 ECU is Defective RCM CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new RCM. REFER to Supplemental Restraint System. CLEAR the DTCs. REPEAT the self-test.</p><p>B1345 Heated Backlight Input Circuit Short to Ground GEM REFER to Glass, Frames and Mechanisms.</p><p>B1347 Heated Backlight Relay Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B1349 Heated Backlight Relay Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1352 Ignition Key-In Circuit Failure GEM REFER to Warning Devices.</p><p>B1355 Ignition RUN Circuit Failure GEM REFER to Steering Column Switches.</p><p>B1359 Ignition RUN/ACC Circuit Failure GEM REFER to Steering Column Switches.</p><p>B1366 Ignition START Circuit Short to Ground GEM REFER to Steering Column Switches.</p><p>B1371 Illuminated Entry Relay Circuit Failure GEM REFER to Interior Lighting.</p><p>B1373 Illuminated Entry Relay Short to Battery GEM REFER to Interior Lighting.</p><p>B1396 Power Door Lock Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1397 Power Door Unlock Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1398 Power Window LF One Touch Window Relay Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B1400 Power Window LF One Touch Window Relay Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1405 Power Window LF Down Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1410 Power Window LF Motor Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B1426 Seat Belt Lamp Circuit Short to Battery GEM REFER to Instrument Cluster.</p><p>B1428 Seat Belt Lamp Circuit Failure GEM REFER to Instrument Cluster.</p><p>B1431 Wiper Brake/Run Relay Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1432 Wiper Brake/Run Relay Circuit Short to Battery GEM REFER to Wipers and Washers.</p><p>B1434 Wiper Hi/Low Speed Relay Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1436 Wiper Hi/Low Speed Relay Circuit Short to Battery GEM REFER to Wipers and Washers.</p><p>B1438 Wiper Mode Select Switch Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1441 Wiper Mode Select Switch Circuit Short to Ground GEM REFER to Wipers and Washers.</p><p>B1446 Wiper Park Sense Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1450 Wiper Wash/Delay Switch Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1453 Wiper Wash/Delay Switch Circuit Short to Ground GEM REFER to Wipers and Washers.</p><p>B1458 Wiper Washer Pump Motor Relay Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1460 Wiper Washer Pump Motor Relay Circuit Short to Battery GEM REFER to Wipers and Washers.</p><p>B1462 Seat Belt Switch Circuit Failure GEM REFER to Warning Devices.</p><p>B1473 Wiper Low Speed Circuit Motor Failure GEM REFER to Wipers and Washers.</p><p>B1475 Accessory Delay Relay Contact Short to Battery GEM REFER to Glass, Frames and Mechanisms.</p><p>B1476 Wiper High Speed Circuit Motor Failure GEM REFER to Wipers and Washers.</p><p>B1483 Brake Pedal Input Circuit Failure GEM REFER to Exterior Lighting.</p><p>B1485 Brake Pedal Input Circuit Short to Battery GEM REFER to Exterior Lighting.</p><p>B1485 Brake Pedal Input Circuit Short to Battery RABS REFER to Section 206-09.</p><p>B1526 Keyless Entry Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1566 Door Ajar Circuit Short to Ground GEM REFER to Interior Lighting.</p><p>B1574 Door Ajar LR Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1577 Park Lamp Input Circuit Short to Battery GEM REFER to Warning Devices.</p><p>B1600 PATS Ignition Key Transponder Signal is Not Received PATS module REFER to Anti-Theft — PATS.</p><p>B1601 PATS Received Incorrect Key-Code From Ignition Key Transponder PATS module REFER to Anti-Theft — PATS.</p><p>B1602 PATS Received Invalid Format of Key-Code From Ignition Key Transponder PATS module REFER to Anti-Theft — PATS.</p><p>B1611 Wiper Rear Mode Select Switch Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1614 Wiper Rear Mode Select Switch Circuit Short to Ground GEM REFER to Wipers and Washers.</p><p>B1629 ECU is Defective Parking aid module REFER to Parking Aid.</p><p>B1681 PATS Transceiver Module Signal is Not Received PATS module REFER to Anti-Theft — PATS.</p><p>B1820 Wiper Rear Motor Up Relay Coil Circuit Short to Battery GEM REFER to Wipers and Washers.</p><p>B1839 Wiper Rear Motor Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1840 Front Wiper Power Circuit Failure GEM REFER to Wipers and Washers.</p><p>B1869 Air Bag Lamp Warning Indicator Circuit Open RCM REFER to Supplemental Restraint System.</p><p>B1870 Air Bag Lamp Warning Indicator Circuit Short to Battery RCM REFER to Supplemental Restraint System.</p><p>B1884 PAD Warning Lamp Inoperative RCM REFER to Supplemental Restraint System.</p><p>B1887 Driver Air Bag Circuit Short to Ground RCM REFER to Supplemental Restraint System.</p><p>B1888 Passenger Air Bag Circuit Short to Ground RCM REFER to Supplemental Restraint System.</p><p>B1890 PAD Warning Lamp Circuit Short to Battery RCM REFER to Supplemental Restraint System.</p><p>B1891 Air Bag Tone Warning Indicator Circuit Short to Battery RCM REFER to Supplemental Restraint System.</p><p>B1892 Air Bag Tone Warning Indicator Circuit Failure RCM REFER to Supplemental Restraint System.</p><p>B1901 Air Bag Crash Sensor No. 1 Feed/Return Circuit Short to Ground RCM REFER to Supplemental Restraint System.</p><p>B1916 Driver Air Bag Circuit Short to Battery RCM REFER to Supplemental Restraint System.</p><p>B1921 Air Bag Diagnostic Monitor Ground Circuit Open RCM REFER to Supplemental Restraint System.</p><p>B1925 Passenger Air Bag Circuit Short to Battery RCM REFER to Supplemental Restraint System.</p><p>B1932 Driver Air Bag Circuit Open RCM REFER to Supplemental Restraint System.</p><p>B1934 Driver Air Bag Inflator Circuit Resistance Low on Squib RCM REFER to Supplemental Restraint System.</p><p>B1935 Passenger Air Bag Inflator Circuit Resistance Low on Squib RCM REFER to Supplemental Restraint System.</p><p>B1941 Air Bag Crash Sensor No. 1 Feed/Return Circuit Open RCM REFER to Supplemental Restraint System.</p><p>B1982 Driver Door Unlock Relay Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B1983 Driver Door Unlock Relay Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B2103 Antenna Not Connected PATS module REFER to Anti-Theft — PATS.</p><p>B2132 Dimmer Switch Circuit Short to Ground GEM REFER to Interior Lighting.</p><p>B2133 Brake Motor Warning Lamp Circuit Failure GEM REFER to Instrument Cluster.</p><p>B2134 Brake Motor Warning Lamp Circuit Short to Battery GEM REFER to Instrument Cluster.</p><p>B2135 Park Brake Applied Warning Lamp Circuit Failure GEM REFER to Instrument Cluster.</p><p>B2136 Park Brake Applied Warning Lamp Circuit Short to Battery GEM REFER to Instrument Cluster.</p><p>B2139 Data Mismatch (Receive Data Does Not Match What Was Expected) PATS module REFER to Anti-Theft — PATS.</p><p>B2141 NVM Configuration Failure GEM Vehicle speed calibration is not programmed into the GEM. REFER to the diagnostic tool help screen on the configuration card to program the tire size and axle ratio. TEST the system for normal operation. If DTC B2141 is still present, install anewGEM. REFER to Generic Electronic Module (GEM) in this section. CONFIGURE the GEM. REFER to Module Configuration.TEST the system for normal operation.</p><p>B2141 NVM Configuration Failure OTC REFER to Steering System — General Information.</p><p>B2141 NVM Configuration Failure PATS module REFER to Anti-Theft — PATS.</p><p>B2148 PWM Input Circuit Failure OTC REFER to Instrument Cluster and Panel Illumination.</p><p>B2357 Driver Window Down Current Sense Low Circuit Failure GEM REFER to Glass, Frames and Mechanisms.</p><p>B2373 LED No. 1 Circuit Short to Battery Parking aid module REFER to Parking Aid.</p><p>B2425 Remote Keyless Entry (RKE) Out of Synchronization GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>B2477 NVM Configuration Failure ABS REFER to Section 206-09.</p><p>B2477 Module Configuration Failure (Unconfigured, Incorrect or Rejected) GEM REFER to Module Configuration.</p><p>B2477 NVM Configuration Failure OTC REFER to Information and Message Center.</p><p>B2477 NVM Configuration Failure Parking and module REFER to Parking Aid.</p><p>B2477 NVM Configuration Failure RABS REFER to Section 206-09.</p><p>B2477 Module Configuration Failure RCM REFER to Module Configuration.</p><p>C1095 ABS Hydraulic Pump Motor Circuit Failure ABS REFER to Section 206-09.</p><p>C1096 ABS Hydraulic Pump Motor Circuit Open ABS REFER to Section 206-09.</p><p>C1115 ABS Power Relay Output Circuit Short to Battery RABS REFER to Section 206-09.</p><p>C1123 Vehicle Speed Sensor Input Short to Battery OTC REFER to Information and Message Center.</p><p>C1125 Brake Fluid Level Sensor Input Circuit Failure GEM REFER to Instrument Cluster.</p><p>C1145 Wheel Speed Sensor RF Input Circuit Failure ABS REFER to Section 206-09.</p><p>C1148 Wheel Speed Sensor RF Coherency Fault ABS REFER to Section 206-09.</p><p>C1149 Hydraulic Fluid Pressure/Flow Circuit Failure GEM REFER to Hydraulic Brake Actuation.</p><p>C1150 Two Speed Rear Axle Input Switch Circuit Short to Battery GEM REFER to Section 205-02.</p><p>C1155 Wheel Speed Sensor LF Input Circuit Failure ABS REFER to Section 206-09.</p><p>C1158 Wheel Speed Sensor LF Coherency Fault ABS REFER to Section 206-09.</p><p>C1159 Hydraulic Fluid Pressure/Flow Circuit Short to Ground GEM REFER to Hydraulic Brake Actuation.</p><p>C1161 Air Pressure Low Circuit Short to Ground GEM REFER to Section 206-09.</p><p>C1169 ABS Fluid Dumping Exceeds Maximum Timing ABS REFER to Section 206-09.</p><p>C1169 ABS Fluid Dumping Exceeds Maximum Timing RABS REFER to Section 206-09.</p><p>C1182 Park Lamp Flash Relay Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>C1183 Park Lamp Flash Relay Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems.</p><p>C1184 ABS System is Not Operational ABS REFER to Section 206-09.</p><p>C1185 ABS Power Relay Output Circuit Failure ABS REFER to Section 206-09.</p><p>C1185 ABS Power Relay Output Circuit Failure RABS REFER to Section 206-09.</p><p>C1189 Brake Fluid Level Sensor Input Short Circuit To Ground GEM REFER to Instrument Cluster.</p><p>C1194 ABS Outlet Valve Coil LF Circuit Failure ABS REFER to Section 206-09.</p><p>C1196 ABS Outlet Valve Coil LF Circuit Short to Battery ABS REFER to Section 206-09.</p><p>C1198 ABS Inlet Valve Coil LF Circuit Failure ABS REFER to Section 206-09.</p><p>C1200 ABS Inlet Valve Coil LF Circuit Short to Battery ABS REFER to Section 206-09.</p><p>C1202 ABS Outlet (Dump) Valve Coil Rear Circuit Failure ABS REFER to Section 206-09.</p><p>C1202 ABS Outlet (Dump) Valve Coil Rear Circuit Failure RABS REFER to Section 206-09.</p><p>C1204 ABS Outlet (Dump) Valve Coil Rear Circuit Short to Battery ABS REFER to Section 206-09.</p><p>C1204 ABS Outlet (Dump) Valve Coil Rear Circuit Short to Battery RABS REFER to Section 206-09.</p><p>C1206 ABS Inlet (Isolation) Valve Coil Rear Circuit Failure ABS REFER to Section 206-09.</p><p>C1206 ABS Inlet (Isolation) Valve Coil Rear Circuit Failure RABS REFER to Section 206-09.</p><p>C1208 ABS Inlet (Isolation) Valve Coil Rear Circuit RABS REFER to Section 206-09.</p><p>C1208 ABS Inlet (Isolation) Valve Coil Rear Circuit ABS REFER to Section 206-09.</p><p>C1210 ABS Outlet Valve Coil RF Circuit Failure RABS REFER to Section 206-09.</p><p>C1212 ABS Outlet Valve Coil RF Circuit Short to Battery ABS REFER to Section 206-09.</p><p>C1214 ABS Inlet Valve Coil RF Circuit Failure ABS REFER to Section 206-09.</p><p>C1216 ABS Inlet Valve Coil RF Circuit Short to Battery ABS REFER to Section 206-09.</p><p>C1222 Wheel Speed Mismatch ABS REFER to Section 206-09.</p><p>C1223 Lamp Brake Warning Output Circuit Failure GEM REFER to Instrument Cluster.</p><p>C1225 Lamp Brake Warning Output Circuit Short to Battery GEM REFER to Instrument Cluster.</p><p>C1226 Lamp Brake Warning Output Short to Ground ABS REFER to Section 206-09.</p><p>C1226 Lamp Brake Warning Output Short to Ground RABS REFER to Section 206-09.</p><p>C1229 Wheel Speed Sensor Rear Center Coherency Fault ABS REFER to Section 206-09.</p><p>C1229 Wheel Speed Sensor Rear Center Coherency Fault RABS REFER to Section 206-09.</p><p>C1230 Wheel Speed Sensor Rear Center Input Circuit Failure ABS REFER to Section 206-09.</p><p>C1230 Wheel Speed Sensor Rear Center Input Circuit Failure GEM REFER to Section 206-09.</p><p>C1230 Wheel Speed Sensor Rear Center Input Circuit Failure RABS REFER to Section 206-09.</p><p>C1233 Wheel Speed LF Input Signal Missing ABS REFER to Section 206-09.</p><p>C1234 Wheel Speed RF Input Signal Missing ABS REFER to Section 206-09.</p><p>C1237 Wheel Speed Rear Input Signal Missing ABS REFER to Section 206-09.</p><p>C1241 ABS Hydraulic Pressure Differential Switch Input Short GEM REFER to Section 206-09.</p><p>C1241 ABS Hydraulic Pressure Differential Switch Input RABS REFER to Section 206-09.</p><p>C1268 Motor Relay No. 1 Circuit Failure GEM REFER to Section 206-09.</p><p>C1269 Motor Relay No. 1 Circuit Short to Battery GEM REFER to Section 206-09.</p><p>C1270 Motor No. 1 Input Circuit Failure GEM REFER to Section 206-09.</p><p>C1271 Motor No. 1 Input Circuit Short to Ground GEM REFER to Section 206-09.</p><p>C1414 Incorrect Module Design Level RCM REFER to Supplemental Restraint System.</p><p>C1446 Brake Switch Circuit Failure GEM REFER to Instrument Cluster.</p><p>C1699 Rear Outer Left Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid.</p><p>C1700 Rear Outer Left Sensor Circuit Failure Parking aid module REFER to Parking Aid.</p><p>C1701 Rear Outer Left Sensor Fault Parking aid module REFER to Parking Aid.</p><p>C1702 Rear Outer Right Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid.</p><p>C1703 Rear Outer Right Sensor Circuit Failure Parking aid module REFER to Parking Aid.</p><p>C1704 Rear Outer Right Sensor Fault Parking aid module REFER to Parking Aid.</p><p>C1705 Rear Inner Left Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid.</p><p>C1728 Transfer Case Unable to Transition Between 2H and 4H GEM REFER to Four-Wheel Drive Systems.</p><p>C1729 Transfer Case Unable to Transition Between 4H and 4L GEM REFER to Four-Wheel Drive Systems.</p><p>C1743 Rear Sounder Circuit Short to Battery Parking aid module REFER to Parking Aid.</p><p>C1751 Vehicle Speed Sensor No. 1 Output Circuit Short to Battery GEM REFER to Section 206-09.</p><p>C1752 Vehicle Speed Sensor No. 1 Output Circuit Short to Ground GEM REFER to Section 206-09.</p><p>P0500 Vehicle Speed Sensor (VSS) Malfunction GEM REFER to Section 206-09.</p><p>P0500 Vehicle Speed Sensor (VSS) Malfunction OTC REFER to Information and Message Center.</p><p>P0720 Output Speed Sensor Circuit Malfunction GEM REFER to Section 206-09.</p><p>P1804 Transmission 4-Wheel Drive High Indicator Circuit Failure GEM REFER to Four-Wheel Drive Systems.</p><p>P1806 Transmission 4-Wheel Drive High Indicator Short GEM REFER to Four-Wheel Drive Systems.</p><p>P1808 Transmission 4-Wheel Drive Low Indicator Circuit Failure GEM REFER to Four-Wheel Drive Systems.</p><p>P1810 Transmission 4-Wheel Drive Low Indicator Short GEM REFER to Four-Wheel Drive Systems.</p><p>P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure GEM REFER to Four-Wheel Drive Systems.</p><p>P1815 Transmission 4-Wheel Drive Mode Select Short GEM REFER to Four-Wheel Drive Systems.</p><p>P1819 Transmission Neutral Safety Switch Short Circuit to Ground GEM REFER to Four-Wheel Drive Systems.</p><p>P1820 Transmission Transfer Case Clockwise Shift Relay GEM REFER to Four-Wheel Drive Systems.</p><p>P1822 Transmission Transfer Case Clockwise Shift Relay Coil GEM REFER to Four-Wheel Drive Systems.</p><p>P1828 Transmission Transfer Case Counterclockwise Shift GEM REFER to Four-Wheel Drive Systems.</p><p>P1830 Transmission Transfer Case Counterclockwise Shift GEM REFER to Four-Wheel Drive Systems.</p><p>P1832 Transmission Transfer Case Differential Lock-Up GEM REFER to Four-Wheel Drive Systems.</p><p>P1834 Transmission Transfer Case Differential Lock-Up GEM REFER to Four-Wheel Drive Systems.</p><p>P1838 Transmission Transfer Case Shift Motor Circuit Failure GEM REFER to Four-Wheel Drive Systems.</p><p>P1865 Transmission Transfer Case Contact Plate Power GEM REFER to Four-Wheel Drive Systems.</p><p>P1866 Transmission Transfer Case System Concern GEM REFER to Four-Wheel Drive Systems.</p><p>P1867 Transmission Transfer Case Contact Plate General GEM REFER to Four-Wheel Drive Systems.</p><p>P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure GEM REFER to Four-Wheel Drive Systems.</p><p>P1877 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short GEM REFER to Four-Wheel Drive Systems.</p><p>U2015 Signal Link Fault (Non-SCP) OTC REFER to Information and Message Center.</p><p>U2016 Signal Link Short to Ground (Non-SCP) OTC REFER to Information and Message Center.</p></blockquote><p></p>
[QUOTE="hotcobra03, post: 16321239, member: 53096"] Gem diagnostic codes [size=6][b]Diagnostic Trouble Code Chart[/b][/size] SECTION 419-10: Multifunction Electronic Modules 2001 F-Super Duty 250-550/Excursion/F-53 Motorhome Chassis Workshop Manual DIAGNOSIS AND TESTING Procedure revision date: 06/21/2000 [b]Diagnostic Trouble Code Chart[/b] [b]DTC[/b] [b]Description[/b] [b]Source[/b] [b]Action[/b] B1201 Fuel Sender Circuit Failure OTC REFER to Information and Message Center. B1203 Fuel Sender Circuit Short to Battery OTC REFER to Information and Message Center. B1208 EIC Switch-1 Assembly Circuit Short to Ground OTC REFER to Information and Message Center. B1213 Anti-Theft Number of Programmed Keys is Below Minimum PATS module REFER to Anti-Theft — PATS. B1217 Horn Relay Coil Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems. B1218 Horn Relay Coil Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems. B1231 Longitudinal Acceleration Threshold Exceeded RCM REFER to Supplemental Restraint System. B1232 Antenna Not Connected PATS module REFER to Anti-Theft — PATS. B1240 Wiper Washer Rear Pump Relay Circuit Failure GEM REFER to Wipers and Washers. B1241 Wiper Washer Rear Pump Relay Circuit Short to Battery GEM REFER to Wipers and Washers. B1243 Express Window Down Switch Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1255 Air Temperature External Sensor Circuit Open OTC REFER to Information and Message Center. B1299 Power Supply Sensor Circuit Short to Ground Parking Aid module REFER to Parking Aid. B1300 Power Door Lock Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B1302 Accessory Delay Relay Coil Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B1304 Accessory Delay Relay Coil Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1310 Power Door Unlock Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems. B1317 Battery Voltage High GEM REFER to Charging System — General Information. B1318 Battery Voltage Low GEM REFER to Charging System — General Information. B1318 Battery Voltage Low RCM REFER to Supplemental Restraint System. B1322 Door Ajar LF Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems. B1323 Door Ajar Lamp Circuit Failure GEM REFER to Instrument Cluster. B1325 Door Ajar Lamp Circuit Short to Battery GEM REFER to Instrument Cluster. B1330 Door Ajar RF Circuit Short to Ground GEM REFER to Interior Lighting. B1334 Decklid Ajar Rear Door Circuit Short to Ground GEM REFER to Interior Lighting. B1338 Door Ajar RR Circuit Short to Ground GEM REFER to Interior Lighting. B1340 Chime Input Request Circuit Short to Ground GEM REFER to Warning Devices. B1342 ECU is Defective ABS CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new ABS module. REFER to Section 206-09. CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective GEM CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new GEM. REFER to Generic Electronic Module (GEM) in this section. CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective OTC REFER to Information and Message Center. B1342 ECU is Defective Parking Aid module REFER to Parking Aid. B1342 ECU is Defective RABS CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new RABS. REFER to Section 206-09. CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective RCM CLEAR DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new RCM. REFER to Supplemental Restraint System. CLEAR the DTCs. REPEAT the self-test. B1345 Heated Backlight Input Circuit Short to Ground GEM REFER to Glass, Frames and Mechanisms. B1347 Heated Backlight Relay Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B1349 Heated Backlight Relay Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1352 Ignition Key-In Circuit Failure GEM REFER to Warning Devices. B1355 Ignition RUN Circuit Failure GEM REFER to Steering Column Switches. B1359 Ignition RUN/ACC Circuit Failure GEM REFER to Steering Column Switches. B1366 Ignition START Circuit Short to Ground GEM REFER to Steering Column Switches. B1371 Illuminated Entry Relay Circuit Failure GEM REFER to Interior Lighting. B1373 Illuminated Entry Relay Short to Battery GEM REFER to Interior Lighting. B1396 Power Door Lock Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems. B1397 Power Door Unlock Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems. B1398 Power Window LF One Touch Window Relay Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B1400 Power Window LF One Touch Window Relay Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1405 Power Window LF Down Circuit Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1410 Power Window LF Motor Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B1426 Seat Belt Lamp Circuit Short to Battery GEM REFER to Instrument Cluster. B1428 Seat Belt Lamp Circuit Failure GEM REFER to Instrument Cluster. B1431 Wiper Brake/Run Relay Circuit Failure GEM REFER to Wipers and Washers. B1432 Wiper Brake/Run Relay Circuit Short to Battery GEM REFER to Wipers and Washers. B1434 Wiper Hi/Low Speed Relay Circuit Failure GEM REFER to Wipers and Washers. B1436 Wiper Hi/Low Speed Relay Circuit Short to Battery GEM REFER to Wipers and Washers. B1438 Wiper Mode Select Switch Circuit Failure GEM REFER to Wipers and Washers. B1441 Wiper Mode Select Switch Circuit Short to Ground GEM REFER to Wipers and Washers. B1446 Wiper Park Sense Circuit Failure GEM REFER to Wipers and Washers. B1450 Wiper Wash/Delay Switch Circuit Failure GEM REFER to Wipers and Washers. B1453 Wiper Wash/Delay Switch Circuit Short to Ground GEM REFER to Wipers and Washers. B1458 Wiper Washer Pump Motor Relay Circuit Failure GEM REFER to Wipers and Washers. B1460 Wiper Washer Pump Motor Relay Circuit Short to Battery GEM REFER to Wipers and Washers. B1462 Seat Belt Switch Circuit Failure GEM REFER to Warning Devices. B1473 Wiper Low Speed Circuit Motor Failure GEM REFER to Wipers and Washers. B1475 Accessory Delay Relay Contact Short to Battery GEM REFER to Glass, Frames and Mechanisms. B1476 Wiper High Speed Circuit Motor Failure GEM REFER to Wipers and Washers. B1483 Brake Pedal Input Circuit Failure GEM REFER to Exterior Lighting. B1485 Brake Pedal Input Circuit Short to Battery GEM REFER to Exterior Lighting. B1485 Brake Pedal Input Circuit Short to Battery RABS REFER to Section 206-09. B1526 Keyless Entry Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems. B1566 Door Ajar Circuit Short to Ground GEM REFER to Interior Lighting. B1574 Door Ajar LR Circuit Short to Ground GEM REFER to Handles, Locks, Latches and Entry Systems. B1577 Park Lamp Input Circuit Short to Battery GEM REFER to Warning Devices. B1600 PATS Ignition Key Transponder Signal is Not Received PATS module REFER to Anti-Theft — PATS. B1601 PATS Received Incorrect Key-Code From Ignition Key Transponder PATS module REFER to Anti-Theft — PATS. B1602 PATS Received Invalid Format of Key-Code From Ignition Key Transponder PATS module REFER to Anti-Theft — PATS. B1611 Wiper Rear Mode Select Switch Circuit Failure GEM REFER to Wipers and Washers. B1614 Wiper Rear Mode Select Switch Circuit Short to Ground GEM REFER to Wipers and Washers. B1629 ECU is Defective Parking aid module REFER to Parking Aid. B1681 PATS Transceiver Module Signal is Not Received PATS module REFER to Anti-Theft — PATS. B1820 Wiper Rear Motor Up Relay Coil Circuit Short to Battery GEM REFER to Wipers and Washers. B1839 Wiper Rear Motor Circuit Failure GEM REFER to Wipers and Washers. B1840 Front Wiper Power Circuit Failure GEM REFER to Wipers and Washers. B1869 Air Bag Lamp Warning Indicator Circuit Open RCM REFER to Supplemental Restraint System. B1870 Air Bag Lamp Warning Indicator Circuit Short to Battery RCM REFER to Supplemental Restraint System. B1884 PAD Warning Lamp Inoperative RCM REFER to Supplemental Restraint System. B1887 Driver Air Bag Circuit Short to Ground RCM REFER to Supplemental Restraint System. B1888 Passenger Air Bag Circuit Short to Ground RCM REFER to Supplemental Restraint System. B1890 PAD Warning Lamp Circuit Short to Battery RCM REFER to Supplemental Restraint System. B1891 Air Bag Tone Warning Indicator Circuit Short to Battery RCM REFER to Supplemental Restraint System. B1892 Air Bag Tone Warning Indicator Circuit Failure RCM REFER to Supplemental Restraint System. B1901 Air Bag Crash Sensor No. 1 Feed/Return Circuit Short to Ground RCM REFER to Supplemental Restraint System. B1916 Driver Air Bag Circuit Short to Battery RCM REFER to Supplemental Restraint System. B1921 Air Bag Diagnostic Monitor Ground Circuit Open RCM REFER to Supplemental Restraint System. B1925 Passenger Air Bag Circuit Short to Battery RCM REFER to Supplemental Restraint System. B1932 Driver Air Bag Circuit Open RCM REFER to Supplemental Restraint System. B1934 Driver Air Bag Inflator Circuit Resistance Low on Squib RCM REFER to Supplemental Restraint System. B1935 Passenger Air Bag Inflator Circuit Resistance Low on Squib RCM REFER to Supplemental Restraint System. B1941 Air Bag Crash Sensor No. 1 Feed/Return Circuit Open RCM REFER to Supplemental Restraint System. B1982 Driver Door Unlock Relay Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems. B1983 Driver Door Unlock Relay Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems. B2103 Antenna Not Connected PATS module REFER to Anti-Theft — PATS. B2132 Dimmer Switch Circuit Short to Ground GEM REFER to Interior Lighting. B2133 Brake Motor Warning Lamp Circuit Failure GEM REFER to Instrument Cluster. B2134 Brake Motor Warning Lamp Circuit Short to Battery GEM REFER to Instrument Cluster. B2135 Park Brake Applied Warning Lamp Circuit Failure GEM REFER to Instrument Cluster. B2136 Park Brake Applied Warning Lamp Circuit Short to Battery GEM REFER to Instrument Cluster. B2139 Data Mismatch (Receive Data Does Not Match What Was Expected) PATS module REFER to Anti-Theft — PATS. B2141 NVM Configuration Failure GEM Vehicle speed calibration is not programmed into the GEM. REFER to the diagnostic tool help screen on the configuration card to program the tire size and axle ratio. TEST the system for normal operation. If DTC B2141 is still present, install anewGEM. REFER to Generic Electronic Module (GEM) in this section. CONFIGURE the GEM. REFER to Module Configuration.TEST the system for normal operation. B2141 NVM Configuration Failure OTC REFER to Steering System — General Information. B2141 NVM Configuration Failure PATS module REFER to Anti-Theft — PATS. B2148 PWM Input Circuit Failure OTC REFER to Instrument Cluster and Panel Illumination. B2357 Driver Window Down Current Sense Low Circuit Failure GEM REFER to Glass, Frames and Mechanisms. B2373 LED No. 1 Circuit Short to Battery Parking aid module REFER to Parking Aid. B2425 Remote Keyless Entry (RKE) Out of Synchronization GEM REFER to Handles, Locks, Latches and Entry Systems. B2477 NVM Configuration Failure ABS REFER to Section 206-09. B2477 Module Configuration Failure (Unconfigured, Incorrect or Rejected) GEM REFER to Module Configuration. B2477 NVM Configuration Failure OTC REFER to Information and Message Center. B2477 NVM Configuration Failure Parking and module REFER to Parking Aid. B2477 NVM Configuration Failure RABS REFER to Section 206-09. B2477 Module Configuration Failure RCM REFER to Module Configuration. C1095 ABS Hydraulic Pump Motor Circuit Failure ABS REFER to Section 206-09. C1096 ABS Hydraulic Pump Motor Circuit Open ABS REFER to Section 206-09. C1115 ABS Power Relay Output Circuit Short to Battery RABS REFER to Section 206-09. C1123 Vehicle Speed Sensor Input Short to Battery OTC REFER to Information and Message Center. C1125 Brake Fluid Level Sensor Input Circuit Failure GEM REFER to Instrument Cluster. C1145 Wheel Speed Sensor RF Input Circuit Failure ABS REFER to Section 206-09. C1148 Wheel Speed Sensor RF Coherency Fault ABS REFER to Section 206-09. C1149 Hydraulic Fluid Pressure/Flow Circuit Failure GEM REFER to Hydraulic Brake Actuation. C1150 Two Speed Rear Axle Input Switch Circuit Short to Battery GEM REFER to Section 205-02. C1155 Wheel Speed Sensor LF Input Circuit Failure ABS REFER to Section 206-09. C1158 Wheel Speed Sensor LF Coherency Fault ABS REFER to Section 206-09. C1159 Hydraulic Fluid Pressure/Flow Circuit Short to Ground GEM REFER to Hydraulic Brake Actuation. C1161 Air Pressure Low Circuit Short to Ground GEM REFER to Section 206-09. C1169 ABS Fluid Dumping Exceeds Maximum Timing ABS REFER to Section 206-09. C1169 ABS Fluid Dumping Exceeds Maximum Timing RABS REFER to Section 206-09. C1182 Park Lamp Flash Relay Circuit Failure GEM REFER to Handles, Locks, Latches and Entry Systems. C1183 Park Lamp Flash Relay Circuit Short to Battery GEM REFER to Handles, Locks, Latches and Entry Systems. C1184 ABS System is Not Operational ABS REFER to Section 206-09. C1185 ABS Power Relay Output Circuit Failure ABS REFER to Section 206-09. C1185 ABS Power Relay Output Circuit Failure RABS REFER to Section 206-09. C1189 Brake Fluid Level Sensor Input Short Circuit To Ground GEM REFER to Instrument Cluster. C1194 ABS Outlet Valve Coil LF Circuit Failure ABS REFER to Section 206-09. C1196 ABS Outlet Valve Coil LF Circuit Short to Battery ABS REFER to Section 206-09. C1198 ABS Inlet Valve Coil LF Circuit Failure ABS REFER to Section 206-09. C1200 ABS Inlet Valve Coil LF Circuit Short to Battery ABS REFER to Section 206-09. C1202 ABS Outlet (Dump) Valve Coil Rear Circuit Failure ABS REFER to Section 206-09. C1202 ABS Outlet (Dump) Valve Coil Rear Circuit Failure RABS REFER to Section 206-09. C1204 ABS Outlet (Dump) Valve Coil Rear Circuit Short to Battery ABS REFER to Section 206-09. C1204 ABS Outlet (Dump) Valve Coil Rear Circuit Short to Battery RABS REFER to Section 206-09. C1206 ABS Inlet (Isolation) Valve Coil Rear Circuit Failure ABS REFER to Section 206-09. C1206 ABS Inlet (Isolation) Valve Coil Rear Circuit Failure RABS REFER to Section 206-09. C1208 ABS Inlet (Isolation) Valve Coil Rear Circuit RABS REFER to Section 206-09. C1208 ABS Inlet (Isolation) Valve Coil Rear Circuit ABS REFER to Section 206-09. C1210 ABS Outlet Valve Coil RF Circuit Failure RABS REFER to Section 206-09. C1212 ABS Outlet Valve Coil RF Circuit Short to Battery ABS REFER to Section 206-09. C1214 ABS Inlet Valve Coil RF Circuit Failure ABS REFER to Section 206-09. C1216 ABS Inlet Valve Coil RF Circuit Short to Battery ABS REFER to Section 206-09. C1222 Wheel Speed Mismatch ABS REFER to Section 206-09. C1223 Lamp Brake Warning Output Circuit Failure GEM REFER to Instrument Cluster. C1225 Lamp Brake Warning Output Circuit Short to Battery GEM REFER to Instrument Cluster. C1226 Lamp Brake Warning Output Short to Ground ABS REFER to Section 206-09. C1226 Lamp Brake Warning Output Short to Ground RABS REFER to Section 206-09. C1229 Wheel Speed Sensor Rear Center Coherency Fault ABS REFER to Section 206-09. C1229 Wheel Speed Sensor Rear Center Coherency Fault RABS REFER to Section 206-09. C1230 Wheel Speed Sensor Rear Center Input Circuit Failure ABS REFER to Section 206-09. C1230 Wheel Speed Sensor Rear Center Input Circuit Failure GEM REFER to Section 206-09. C1230 Wheel Speed Sensor Rear Center Input Circuit Failure RABS REFER to Section 206-09. C1233 Wheel Speed LF Input Signal Missing ABS REFER to Section 206-09. C1234 Wheel Speed RF Input Signal Missing ABS REFER to Section 206-09. C1237 Wheel Speed Rear Input Signal Missing ABS REFER to Section 206-09. C1241 ABS Hydraulic Pressure Differential Switch Input Short GEM REFER to Section 206-09. C1241 ABS Hydraulic Pressure Differential Switch Input RABS REFER to Section 206-09. C1268 Motor Relay No. 1 Circuit Failure GEM REFER to Section 206-09. C1269 Motor Relay No. 1 Circuit Short to Battery GEM REFER to Section 206-09. C1270 Motor No. 1 Input Circuit Failure GEM REFER to Section 206-09. C1271 Motor No. 1 Input Circuit Short to Ground GEM REFER to Section 206-09. C1414 Incorrect Module Design Level RCM REFER to Supplemental Restraint System. C1446 Brake Switch Circuit Failure GEM REFER to Instrument Cluster. C1699 Rear Outer Left Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid. C1700 Rear Outer Left Sensor Circuit Failure Parking aid module REFER to Parking Aid. C1701 Rear Outer Left Sensor Fault Parking aid module REFER to Parking Aid. C1702 Rear Outer Right Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid. C1703 Rear Outer Right Sensor Circuit Failure Parking aid module REFER to Parking Aid. C1704 Rear Outer Right Sensor Fault Parking aid module REFER to Parking Aid. C1705 Rear Inner Left Sensor Circuit Short to Battery Parking aid module REFER to Parking Aid. C1728 Transfer Case Unable to Transition Between 2H and 4H GEM REFER to Four-Wheel Drive Systems. C1729 Transfer Case Unable to Transition Between 4H and 4L GEM REFER to Four-Wheel Drive Systems. C1743 Rear Sounder Circuit Short to Battery Parking aid module REFER to Parking Aid. C1751 Vehicle Speed Sensor No. 1 Output Circuit Short to Battery GEM REFER to Section 206-09. C1752 Vehicle Speed Sensor No. 1 Output Circuit Short to Ground GEM REFER to Section 206-09. P0500 Vehicle Speed Sensor (VSS) Malfunction GEM REFER to Section 206-09. P0500 Vehicle Speed Sensor (VSS) Malfunction OTC REFER to Information and Message Center. P0720 Output Speed Sensor Circuit Malfunction GEM REFER to Section 206-09. P1804 Transmission 4-Wheel Drive High Indicator Circuit Failure GEM REFER to Four-Wheel Drive Systems. P1806 Transmission 4-Wheel Drive High Indicator Short GEM REFER to Four-Wheel Drive Systems. P1808 Transmission 4-Wheel Drive Low Indicator Circuit Failure GEM REFER to Four-Wheel Drive Systems. P1810 Transmission 4-Wheel Drive Low Indicator Short GEM REFER to Four-Wheel Drive Systems. P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure GEM REFER to Four-Wheel Drive Systems. P1815 Transmission 4-Wheel Drive Mode Select Short GEM REFER to Four-Wheel Drive Systems. P1819 Transmission Neutral Safety Switch Short Circuit to Ground GEM REFER to Four-Wheel Drive Systems. P1820 Transmission Transfer Case Clockwise Shift Relay GEM REFER to Four-Wheel Drive Systems. P1822 Transmission Transfer Case Clockwise Shift Relay Coil GEM REFER to Four-Wheel Drive Systems. P1828 Transmission Transfer Case Counterclockwise Shift GEM REFER to Four-Wheel Drive Systems. P1830 Transmission Transfer Case Counterclockwise Shift GEM REFER to Four-Wheel Drive Systems. P1832 Transmission Transfer Case Differential Lock-Up GEM REFER to Four-Wheel Drive Systems. P1834 Transmission Transfer Case Differential Lock-Up GEM REFER to Four-Wheel Drive Systems. P1838 Transmission Transfer Case Shift Motor Circuit Failure GEM REFER to Four-Wheel Drive Systems. P1865 Transmission Transfer Case Contact Plate Power GEM REFER to Four-Wheel Drive Systems. P1866 Transmission Transfer Case System Concern GEM REFER to Four-Wheel Drive Systems. P1867 Transmission Transfer Case Contact Plate General GEM REFER to Four-Wheel Drive Systems. P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure GEM REFER to Four-Wheel Drive Systems. P1877 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short GEM REFER to Four-Wheel Drive Systems. U2015 Signal Link Fault (Non-SCP) OTC REFER to Information and Message Center. U2016 Signal Link Short to Ground (Non-SCP) OTC REFER to Information and Message Center. [/QUOTE]
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