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Need Help w/codes P0506, P0602, etc..
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<blockquote data-quote="hotcobra03" data-source="post: 15831886" data-attributes="member: 53096"><p>had a chance to get into pc..</p><p>here is what it says..</p><p></p><p>po506..same as po505</p><p></p><p>start at ke2</p><p>2003 PCED OBDII</p><p>SECTION 5: Pinpoint Tests</p><p>KE: Idle Air Control (IAC) Valve</p><p><img src="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=arrowbak.gif~gen~ref.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /><a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325093.htm~gen~ref.htm" target="_blank"> KE: Introduction </a> </p><p><span style="font-size: 12px"><strong>KE1 IDLE CONCERNS OR STALLS: RUN KOER SELF-TEST AND OUTPUT CONTINUOUS MEMORY DTCS </strong></span></p><ul> <li data-xf-list-type="ul"><br /> The Symptom Charts have indicated that there was no change in idle quality when the IAC valve was disconnected.<br /> </li> <li data-xf-list-type="ul">Retrieve all Continuous Memory DTCs.<br /> <strong>Note: </strong>If unable to perform KOER Self-Test to completion, GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE2" target="_blank">KE2 </a>.<br /> <br /> </li> <li data-xf-list-type="ul">Run Key On Engine Running (KOER) Self-Test.</li> </ul><p>Is DTC P0505, P1504 or P1507 retrieved during KOER Self-Test or from Continuous Memory?</p><p><strong>Yes </strong> <strong>No </strong></p><p>KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE2" target="_blank">KE2 </a>. The IAC system is OK. RETURN to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~leftside=V32s3l.htm&rightside=V32s3r.htm&market=us&lang=en~gen~2col.htm" target="_blank">Section 3 </a>, Symptom Charts.</p><p> </p><p><span style="font-size: 12px"><strong>KE2 DTC P0505, P1504, P1507 OR STARTS ONLY AT PART THROTTLE: CHECK VPWR VOLTAGE TO IAC VALVE </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>If EGR DTC P0402 was output during Self Test, diagnose it first before continuing with this Pinpoint Test.<br /> </li> <li data-xf-list-type="ul">Disconnect IAC valve.</li> <li data-xf-list-type="ul">Key on, engine off.</li> <li data-xf-list-type="ul">Measure VPWR circuit voltage at the IAC valve harness connector.</li> </ul><p>Is voltage greater than 10.5 volts?</p><p><strong>Yes </strong> <strong>No </strong></p><p>KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE3" target="_blank">KE3 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>KE3 CHECK IAC VALVE RESISTANCE </strong></span></p><ul> <li data-xf-list-type="ul">IAC valve disconnected.</li> <li data-xf-list-type="ul">Measure IAC valve resistance.</li> </ul><p>Is resistance between 6.0 and 13.0 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE4" target="_blank">KE4 </a>. REPLACE IAC valve.</p><p> </p><p><span style="font-size: 12px"><strong>KE4 CHECK IAC VALVE FOR AN INTERNAL SHORT TO IAC CASE </strong></span></p><ul> <li data-xf-list-type="ul">Measure the resistance from either IAC valve pin to IAC valve case.</li> </ul><p>Is resistance greater than 10,000 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p><strong>For DTC P1504: </strong></p><p></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE7" target="_blank">KE7 </a>. </p><p></p><p><strong>All others: </strong></p><p></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE5" target="_blank">KE5 </a>. REPLACE IAC valve.</p><p> </p><p><span style="font-size: 12px"><strong>KE5 CHECK AIR INLET FOR PLUGGING OR STUCK IAC PINTLE </strong></span></p><ul> <li data-xf-list-type="ul">Inspect the entire intake air system for debris, blockage and other damage.</li> <li data-xf-list-type="ul">Remove and inspect IAC valve, check pintle movement. Check air tubes (if equipped) for blockage and other damage.</li> <li data-xf-list-type="ul">Remove and inspect the air cleaner element for excessive dirt.</li> </ul><p>Is the IAC valve and intake air system OK?</p><p><strong>Yes </strong> <strong>No </strong></p><p>RESTORE inlet air system. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE6" target="_blank">KE6 </a>. REPLACE IAC valve or repair air inlet as necessary.</p><p> </p><p><span style="font-size: 12px"><strong>KE6 CHECK FOR INLET AIR LEAKS </strong></span></p><ul> <li data-xf-list-type="ul">Key on, engine running.</li> <li data-xf-list-type="ul">With engine running at idle, listen for vacuum leaks.</li> <li data-xf-list-type="ul">Inspect the entire intake air system from the mass air flow (MAF) sensor to the intake manifold for leaks such as:<ul> <li data-xf-list-type="ul">Cracked or punctured intake air tube.</li> <li data-xf-list-type="ul">Damaged or loose IAC air tubes.</li> <li data-xf-list-type="ul">Loose intake air tube at air cleaner housing or throttle body.</li> <li data-xf-list-type="ul">IAC valve or gasket seal.</li> <li data-xf-list-type="ul">EGR valve gasket seal.</li> <li data-xf-list-type="ul">Vacuum supply connector and hose.</li> <li data-xf-list-type="ul">PCV valve, connectors and hoses.</li> </ul></li> </ul><p>Are any leaks detected in the above areas?</p><p><strong>Yes </strong> <strong>No </strong></p><p>REPAIR as necessary. KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE7" target="_blank">KE7 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>KE7 CHECK IAC CIRCUIT FOR OPEN IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>Refer to the PCM connector pin numbers in the beginning of this Pinpoint Test.<br /> </li> <li data-xf-list-type="ul">IAC valve disconnected.</li> <li data-xf-list-type="ul">Disconnect PCM.</li> <li data-xf-list-type="ul">Measure resistance of IAC circuit between PCM harness connector pin and IAC valve harness connector.</li> </ul><p>Is resistance less than 5.0 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE8" target="_blank">KE8 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>KE8 CHECK IAC CIRCUIT FOR SHORT TO PWR IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul">Key on, engine off.</li> <li data-xf-list-type="ul">Measure voltage on IAC circuit between PCM harness connector pin and battery negative post.</li> </ul><p>Is voltage less than 1.0 volt?</p><p><strong>Yes </strong> <strong>No </strong></p><p>KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE9" target="_blank">KE9 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>KE9 CHECK IAC CIRCUIT FOR SHORT TO GROUND IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect scan tool from DLC.</li> <li data-xf-list-type="ul">Measure resistance between IAC and PWR GND circuits at the PCM harness connector.</li> </ul><p>Is each resistance greater than 10,000 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p><strong>For KOEO or KOER DTC P1504, P0511: </strong></p><p></p><p>REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>). </p><p></p><p><strong>All Others: </strong></p><p></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE10" target="_blank">KE10 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>KE10 CHECK IAC SIGNAL FROM PCM </strong></span></p><ul> <li data-xf-list-type="ul">Reconnect PCM and IAC valve.<br /> <strong>Note: </strong>If stalling occurs place a shim under the hard stop screw to maintain idle conditions).<br /> <br /> </li> <li data-xf-list-type="ul">Key on, engine running.</li> <li data-xf-list-type="ul">Access IAC and RPM PIDS.</li> <li data-xf-list-type="ul">With engine at normal operating temperature, accessories OFF and at closed throttle, the IAC duty cycle must be between approximately 22 percent and 65 percent.</li> <li data-xf-list-type="ul">Slowly increase engine speed to 3000 rpm and return to closed throttle (Note: If closed throttle rpm is significantly higher than normal, ignore this step).</li> </ul><p>Is the IAC duty cycle within specification at closed throttle and does the duty cycle respond to the change in rpm?</p><p><strong>Yes </strong> <strong>No </strong></p><p><strong>For Continuous Memory DTCs P1504 and P1507: </strong></p><p></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE30" target="_blank">KE30 </a>. </p><p></p><p><strong>All others: </strong></p><p></p><p>KEY OFF. INSPECT throttle body for damage. REPAIR as necessary. If OK, REPLACE IAC valve. RESET Keep Alive Random Access Memory (RAM). (REFER to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322010.htm~gen~ref.htm" target="_blank">Powertrain Control Module (PCM) Reset </a>). REPLACE IAC valve.</p><p> </p><p><span style="font-size: 12px"><strong>KE20 DTC P1506: CHECK FOR VACUUM LEAKS </strong></span></p><ul> <li data-xf-list-type="ul">Key on, engine running.</li> <li data-xf-list-type="ul">With the engine at idle, listen for vacuum leaks.</li> <li data-xf-list-type="ul">Inspect the entire intake air system from the mass air flow (MAF) sensor to the intake manifold for damage or leaks such as:<ul> <li data-xf-list-type="ul">Cracked or punctured intake air tube.</li> <li data-xf-list-type="ul">Loose or cracked IAC air tubes.</li> <li data-xf-list-type="ul">Loose intake air tube at the air cleaner housing or throttle body.</li> <li data-xf-list-type="ul">IAC valve or gasket seal.</li> <li data-xf-list-type="ul">Intake manifold assembly or gasket seal.</li> <li data-xf-list-type="ul">EGR valve gasket seal.</li> <li data-xf-list-type="ul">Vacuum supply connectors and hose.</li> <li data-xf-list-type="ul">PCV valve, connectors and hose.</li> </ul></li> </ul><p>Are any leaks detected in the above areas?</p><p><strong>Yes </strong> <strong>No </strong></p><p>KEY OFF. REPAIR as necessary. KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE21" target="_blank">KE21 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>KE21 CHECK EVAP SYSTEM FOR A STUCK OPEN VALVE </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect hoses at EVAP canister purge valve (or VMV).</li> <li data-xf-list-type="ul">Connect a hand vacuum pump at the fuel vapor port to EVAP canister at the EVAP canister purge valve (or VMV).</li> <li data-xf-list-type="ul">Apply 53 kPa (16 in-Hg) of vacuum to EVAP canister purge valve (or VMV). <br /> <br /> <img src="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=AA0937C.gif~gen~ref.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /><br /> </li> </ul><p>Does the EVAP canister purge valve (or VMV) hold vacuum for 20 seconds?</p><p><strong>Yes </strong> <strong>No </strong></p><p>RECONNECT hoses. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE22" target="_blank">KE22 </a>. REPLACE EVAP canister purge valve.</p><p> </p><p><span style="font-size: 12px"><strong>KE22 CHECK IAC VALVE FOR PROPER FUNCTION </strong></span></p><ul> <li data-xf-list-type="ul">Key on, engine running.</li> <li data-xf-list-type="ul">Bring engine to normal operating temperature.</li> <li data-xf-list-type="ul">Transmission in PARK or NEUTRAL.</li> <li data-xf-list-type="ul">Disconnect IAC valve.</li> </ul><p>Does the rpm drop or engine stall?</p><p><strong>Yes </strong> <strong>No </strong></p><p>KEY OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE23" target="_blank">KE23 </a>. KEY OFF. INSPECT throttle body for damage. REPAIR as necessary. If OK, REPLACE IAC valve. RESET Keep Alive Random Access Memory (RAM). (REFER to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322010.htm~gen~ref.htm" target="_blank">Powertrain Control Module (PCM) Reset </a>.)</p><p> </p><p><span style="font-size: 12px"><strong>KE23 CHECK IAC CIRCUIT FOR SHORT TO GND IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>Refer to the PCM connector pin numbers in the beginning of this Pinpoint Test.<br /> </li> <li data-xf-list-type="ul">Disconnect scan tool from DLC.</li> <li data-xf-list-type="ul">Disconnect PCM.</li> <li data-xf-list-type="ul">Measure resistance between IAC circuit at the PCM harness connector and battery negative post.</li> </ul><p>Is each resistance greater than 10,000 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p><strong>For fast idle symptom currently present: </strong></p><p></p><p>REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>). </p><p></p><p><strong>All others: </strong></p><p></p><p>Reconnect PCM. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE30" target="_blank">KE30 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>KE30 CHECK IAC SYSTEM FOR INTERMITTENT OPEN OR SHORT </strong></span></p><ul> <li data-xf-list-type="ul">Scan tool connected.</li> <li data-xf-list-type="ul">Key on, engine running.</li> <li data-xf-list-type="ul">Access IAC PID and RPM PIDs.</li> <li data-xf-list-type="ul">With engine at normal operating temperature, accessories off and at idle, the IAC duty cycle must be between 20% and 45%.</li> <li data-xf-list-type="ul">Observe the PIDs for an indication of a fault while completing the following at idle:<ul> <li data-xf-list-type="ul">Lightly tap on IAC valve and wiggle harness connector to simulate road shock.</li> <li data-xf-list-type="ul">Grasp the vehicle harness closest to the IAC valve. Shake and bend a small section of the harness from the IAC to the dash panel and from the dash panel to the PCM.</li> </ul></li> </ul><p>Do the IAC or RPM PIDs suddenly change in value indicating a fault?</p><p><strong>Yes </strong> <strong>No </strong></p><p>ISOLATE fault and REPAIR as necessary. <strong>For idle quality, starting or stalling symptoms currently present: </strong></p><p></p><p>REPLACE IAC valve. </p><p></p><p><strong>All others: </strong></p><p></p><p>Unable to duplicate or identify fault at this time. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1" target="_blank">Z1 </a>.</p></blockquote><p></p>
[QUOTE="hotcobra03, post: 15831886, member: 53096"] had a chance to get into pc.. here is what it says.. po506..same as po505 start at ke2 2003 PCED OBDII SECTION 5: Pinpoint Tests KE: Idle Air Control (IAC) Valve [IMG]https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=arrowbak.gif~gen~ref.gif[/IMG][URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325093.htm~gen~ref.htm'] KE: Introduction [/URL] [SIZE=3][B]KE1 IDLE CONCERNS OR STALLS: RUN KOER SELF-TEST AND OUTPUT CONTINUOUS MEMORY DTCS [/B][/SIZE] [LIST] The Symptom Charts have indicated that there was no change in idle quality when the IAC valve was disconnected. [*]Retrieve all Continuous Memory DTCs. [B]Note: [/B]If unable to perform KOER Self-Test to completion, GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE2']KE2 [/URL]. [*]Run Key On Engine Running (KOER) Self-Test. [/LIST] Is DTC P0505, P1504 or P1507 retrieved during KOER Self-Test or from Continuous Memory? [B]Yes [/B] [B]No [/B] KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE2']KE2 [/URL]. The IAC system is OK. RETURN to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~leftside=V32s3l.htm&rightside=V32s3r.htm&market=us&lang=en~gen~2col.htm']Section 3 [/URL], Symptom Charts. [SIZE=3][B]KE2 DTC P0505, P1504, P1507 OR STARTS ONLY AT PART THROTTLE: CHECK VPWR VOLTAGE TO IAC VALVE [/B][/SIZE] [LIST] [B]Note: [/B]If EGR DTC P0402 was output during Self Test, diagnose it first before continuing with this Pinpoint Test. [*]Disconnect IAC valve. [*]Key on, engine off. [*]Measure VPWR circuit voltage at the IAC valve harness connector. [/LIST] Is voltage greater than 10.5 volts? [B]Yes [/B] [B]No [/B] KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE3']KE3 [/URL]. REPAIR open circuit. [SIZE=3][B]KE3 CHECK IAC VALVE RESISTANCE [/B][/SIZE] [LIST] [*]IAC valve disconnected. [*]Measure IAC valve resistance. [/LIST] Is resistance between 6.0 and 13.0 ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE4']KE4 [/URL]. REPLACE IAC valve. [SIZE=3][B]KE4 CHECK IAC VALVE FOR AN INTERNAL SHORT TO IAC CASE [/B][/SIZE] [LIST] [*]Measure the resistance from either IAC valve pin to IAC valve case. [/LIST] Is resistance greater than 10,000 ohms? [B]Yes [/B] [B]No For DTC P1504: [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE7']KE7 [/URL]. [B]All others: [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE5']KE5 [/URL]. REPLACE IAC valve. [SIZE=3][B]KE5 CHECK AIR INLET FOR PLUGGING OR STUCK IAC PINTLE [/B][/SIZE] [LIST] [*]Inspect the entire intake air system for debris, blockage and other damage. [*]Remove and inspect IAC valve, check pintle movement. Check air tubes (if equipped) for blockage and other damage. [*]Remove and inspect the air cleaner element for excessive dirt. [/LIST] Is the IAC valve and intake air system OK? [B]Yes [/B] [B]No [/B] RESTORE inlet air system. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE6']KE6 [/URL]. REPLACE IAC valve or repair air inlet as necessary. [SIZE=3][B]KE6 CHECK FOR INLET AIR LEAKS [/B][/SIZE] [LIST] [*]Key on, engine running. [*]With engine running at idle, listen for vacuum leaks. [*]Inspect the entire intake air system from the mass air flow (MAF) sensor to the intake manifold for leaks such as: [LIST] [*]Cracked or punctured intake air tube. [*]Damaged or loose IAC air tubes. [*]Loose intake air tube at air cleaner housing or throttle body. [*]IAC valve or gasket seal. [*]EGR valve gasket seal. [*]Vacuum supply connector and hose. [*]PCV valve, connectors and hoses. [/LIST] [/LIST] Are any leaks detected in the above areas? [B]Yes [/B] [B]No [/B] REPAIR as necessary. KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE7']KE7 [/URL]. [SIZE=3][B]KE7 CHECK IAC CIRCUIT FOR OPEN IN HARNESS [/B][/SIZE] [LIST] [B]Note: [/B]Refer to the PCM connector pin numbers in the beginning of this Pinpoint Test. [*]IAC valve disconnected. [*]Disconnect PCM. [*]Measure resistance of IAC circuit between PCM harness connector pin and IAC valve harness connector. [/LIST] Is resistance less than 5.0 ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE8']KE8 [/URL]. REPAIR open circuit. [SIZE=3][B]KE8 CHECK IAC CIRCUIT FOR SHORT TO PWR IN HARNESS [/B][/SIZE] [LIST] [*]Key on, engine off. [*]Measure voltage on IAC circuit between PCM harness connector pin and battery negative post. [/LIST] Is voltage less than 1.0 volt? [B]Yes [/B] [B]No [/B] KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE9']KE9 [/URL]. REPAIR short circuit. [SIZE=3][B]KE9 CHECK IAC CIRCUIT FOR SHORT TO GROUND IN HARNESS [/B][/SIZE] [LIST] [*]Disconnect scan tool from DLC. [*]Measure resistance between IAC and PWR GND circuits at the PCM harness connector. [/LIST] Is each resistance greater than 10,000 ohms? [B]Yes [/B] [B]No For KOEO or KOER DTC P1504, P0511: [/B] REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]). [B]All Others: [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE10']KE10 [/URL]. REPAIR short circuit. [SIZE=3][B]KE10 CHECK IAC SIGNAL FROM PCM [/B][/SIZE] [LIST] [*]Reconnect PCM and IAC valve. [B]Note: [/B]If stalling occurs place a shim under the hard stop screw to maintain idle conditions). [*]Key on, engine running. [*]Access IAC and RPM PIDS. [*]With engine at normal operating temperature, accessories OFF and at closed throttle, the IAC duty cycle must be between approximately 22 percent and 65 percent. [*]Slowly increase engine speed to 3000 rpm and return to closed throttle (Note: If closed throttle rpm is significantly higher than normal, ignore this step). [/LIST] Is the IAC duty cycle within specification at closed throttle and does the duty cycle respond to the change in rpm? [B]Yes [/B] [B]No For Continuous Memory DTCs P1504 and P1507: [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE30']KE30 [/URL]. [B]All others: [/B] KEY OFF. INSPECT throttle body for damage. REPAIR as necessary. If OK, REPLACE IAC valve. RESET Keep Alive Random Access Memory (RAM). (REFER to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322010.htm~gen~ref.htm']Powertrain Control Module (PCM) Reset [/URL]). REPLACE IAC valve. [SIZE=3][B]KE20 DTC P1506: CHECK FOR VACUUM LEAKS [/B][/SIZE] [LIST] [*]Key on, engine running. [*]With the engine at idle, listen for vacuum leaks. [*]Inspect the entire intake air system from the mass air flow (MAF) sensor to the intake manifold for damage or leaks such as: [LIST] [*]Cracked or punctured intake air tube. [*]Loose or cracked IAC air tubes. [*]Loose intake air tube at the air cleaner housing or throttle body. [*]IAC valve or gasket seal. [*]Intake manifold assembly or gasket seal. [*]EGR valve gasket seal. [*]Vacuum supply connectors and hose. [*]PCV valve, connectors and hose. [/LIST] [/LIST] Are any leaks detected in the above areas? [B]Yes [/B] [B]No [/B] KEY OFF. REPAIR as necessary. KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE21']KE21 [/URL]. [SIZE=3][B]KE21 CHECK EVAP SYSTEM FOR A STUCK OPEN VALVE [/B][/SIZE] [LIST] [*]Disconnect hoses at EVAP canister purge valve (or VMV). [*]Connect a hand vacuum pump at the fuel vapor port to EVAP canister at the EVAP canister purge valve (or VMV). [*]Apply 53 kPa (16 in-Hg) of vacuum to EVAP canister purge valve (or VMV). [IMG]https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=AA0937C.gif~gen~ref.gif[/IMG] [/LIST] Does the EVAP canister purge valve (or VMV) hold vacuum for 20 seconds? [B]Yes [/B] [B]No [/B] RECONNECT hoses. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE22']KE22 [/URL]. REPLACE EVAP canister purge valve. [SIZE=3][B]KE22 CHECK IAC VALVE FOR PROPER FUNCTION [/B][/SIZE] [LIST] [*]Key on, engine running. [*]Bring engine to normal operating temperature. [*]Transmission in PARK or NEUTRAL. [*]Disconnect IAC valve. [/LIST] Does the rpm drop or engine stall? [B]Yes [/B] [B]No [/B] KEY OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE23']KE23 [/URL]. KEY OFF. INSPECT throttle body for damage. REPAIR as necessary. If OK, REPLACE IAC valve. RESET Keep Alive Random Access Memory (RAM). (REFER to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322010.htm~gen~ref.htm']Powertrain Control Module (PCM) Reset [/URL].) [SIZE=3][B]KE23 CHECK IAC CIRCUIT FOR SHORT TO GND IN HARNESS [/B][/SIZE] [LIST] [B]Note: [/B]Refer to the PCM connector pin numbers in the beginning of this Pinpoint Test. [*]Disconnect scan tool from DLC. [*]Disconnect PCM. [*]Measure resistance between IAC circuit at the PCM harness connector and battery negative post. [/LIST] Is each resistance greater than 10,000 ohms? [B]Yes [/B] [B]No For fast idle symptom currently present: [/B] REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]). [B]All others: [/B] Reconnect PCM. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325094.htm~gen~ref.htm#pptKE30']KE30 [/URL]. REPAIR short circuit. [SIZE=3][B]KE30 CHECK IAC SYSTEM FOR INTERMITTENT OPEN OR SHORT [/B][/SIZE] [LIST] [*]Scan tool connected. [*]Key on, engine running. [*]Access IAC PID and RPM PIDs. [*]With engine at normal operating temperature, accessories off and at idle, the IAC duty cycle must be between 20% and 45%. [*]Observe the PIDs for an indication of a fault while completing the following at idle: [LIST] [*]Lightly tap on IAC valve and wiggle harness connector to simulate road shock. [*]Grasp the vehicle harness closest to the IAC valve. Shake and bend a small section of the harness from the IAC to the dash panel and from the dash panel to the PCM. [/LIST] [/LIST] Do the IAC or RPM PIDs suddenly change in value indicating a fault? [B]Yes [/B] [B]No [/B] ISOLATE fault and REPAIR as necessary. [B]For idle quality, starting or stalling symptoms currently present: [/B] REPLACE IAC valve. [B]All others: [/B] Unable to duplicate or identify fault at this time. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_6820/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1']Z1 [/URL]. [/QUOTE]
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