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Battery drain on MAXI12 Fuse circuit..?
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<blockquote data-quote="SNAKEYE" data-source="post: 4272390" data-attributes="member: 22534"><p>MAXX RS4: </p><p></p><p>Q1 - Is your GT a coupe or convertible?</p><p></p><p>Q2 - Does it have remote/keyless entry?</p><p></p><p>EDITED 1:15 PM EST</p><p></p><p>Answers to the above aren't really all that specifically relavent as each have basically the same wiring and/or functions.</p><p></p><p>There are four (4) I/P fuses and one circuit breaker that are fed by the MAXI fuse (50-amp) known as HD LPS: </p><p> Fuse #4 @ 10-amps supplies the Air Bag Diagnostic Monitor</p><p> Fuse #5 @ 15-amps supplies the Main Light Switch</p><p> Fuse #8 @ 10-amps supplies Data Link; Main Light Switch; Clock; Instrument Cluster; Radio; Remote/Keyless Entry Module; Courtesy Lights; Anti-Theft Module; Vanity Lights; Map/Reading/Dome Lights; Glove Compartment; Engine Compartment; Luggage (Trunk) Compartment; and probably some others that I overlooked!</p><p> Fuse #16 @ 20-amps supplies the Anti-Theft Module/Controller, and the Multi-Function Switch.</p><p> Circuit Breaker #12 @ 20-amps supplies the Remote/Keyless Entry; Window Switches; and Trunk Latch Release</p><p></p><p>I can not explain how a drain of 2.28-amps can occur with ALL of these unplugged as these devices are in the branch circuits off of the HD LPS MAXI fuse. If ALL of these devices are removed simultaneously ALL circuits branching from the HD LPS MAXI fuse are disconnected and no current can flow through the HD LPS MAXI fuse. The only things protected by the above devices that draw current continuously are the keyless /remote entry and anti-theft circuits. Under normal operation these should not draw anything like 2+ amps.</p><p></p><p>There are four (4) lighting devices controlled by remote switches fed by Fuse #8 that are most suspect to me (*two of which I believe I mentioned before): *engine compartment (if so equipped), vanity mirrors (on the sunvisors), glove compartment, and *luggage (trunk) compartment.</p><p>These are, for the most part, not normally very visible in that they are covered and ambient light pretty much obscures them. In the cases of the engine, trunk, and glove compartments, a loose mounting screw could allow the switches to be closed when the hood, trunk, or glove compartment door are in the closed positions. A faulty hinge on a vanity mirror might allow the switch to stay closed even though the mirror door has been closed. The dim light those things provide isn’t readily visible with the mirror door closed, especially in daylight conditions.</p><p></p><p>If I get a chance this evening I’ll put an ammeter in my battery negative cable and see what kind of drain I get with the car locked up tight, and then with each of these things (not the engine compartment because the ‘97’s don’t have it) turned on separately. Drat! come to think of it, I don’t have a bulb in the trunk compartment’s socket. I got the car without it and never bothered to replace it. I may have a spare bulb around somewhere that I can stick in.</p><p></p><p>Unless there are after-market electrical modifications on the car that might be connected to the HD LPS MAXI fuse circuit that you haven’t mentioned, you need to specifically eliminate the above four devices by whatever methods necessary to assure that they are not the culprits.</p></blockquote><p></p>
[QUOTE="SNAKEYE, post: 4272390, member: 22534"] MAXX RS4: Q1 - Is your GT a coupe or convertible? Q2 - Does it have remote/keyless entry? EDITED 1:15 PM EST Answers to the above aren't really all that specifically relavent as each have basically the same wiring and/or functions. There are four (4) I/P fuses and one circuit breaker that are fed by the MAXI fuse (50-amp) known as HD LPS: Fuse #4 @ 10-amps supplies the Air Bag Diagnostic Monitor Fuse #5 @ 15-amps supplies the Main Light Switch Fuse #8 @ 10-amps supplies Data Link; Main Light Switch; Clock; Instrument Cluster; Radio; Remote/Keyless Entry Module; Courtesy Lights; Anti-Theft Module; Vanity Lights; Map/Reading/Dome Lights; Glove Compartment; Engine Compartment; Luggage (Trunk) Compartment; and probably some others that I overlooked! Fuse #16 @ 20-amps supplies the Anti-Theft Module/Controller, and the Multi-Function Switch. Circuit Breaker #12 @ 20-amps supplies the Remote/Keyless Entry; Window Switches; and Trunk Latch Release I can not explain how a drain of 2.28-amps can occur with ALL of these unplugged as these devices are in the branch circuits off of the HD LPS MAXI fuse. If ALL of these devices are removed simultaneously ALL circuits branching from the HD LPS MAXI fuse are disconnected and no current can flow through the HD LPS MAXI fuse. The only things protected by the above devices that draw current continuously are the keyless /remote entry and anti-theft circuits. Under normal operation these should not draw anything like 2+ amps. There are four (4) lighting devices controlled by remote switches fed by Fuse #8 that are most suspect to me (*two of which I believe I mentioned before): *engine compartment (if so equipped), vanity mirrors (on the sunvisors), glove compartment, and *luggage (trunk) compartment. These are, for the most part, not normally very visible in that they are covered and ambient light pretty much obscures them. In the cases of the engine, trunk, and glove compartments, a loose mounting screw could allow the switches to be closed when the hood, trunk, or glove compartment door are in the closed positions. A faulty hinge on a vanity mirror might allow the switch to stay closed even though the mirror door has been closed. The dim light those things provide isn’t readily visible with the mirror door closed, especially in daylight conditions. If I get a chance this evening I’ll put an ammeter in my battery negative cable and see what kind of drain I get with the car locked up tight, and then with each of these things (not the engine compartment because the ‘97’s don’t have it) turned on separately. Drat! come to think of it, I don’t have a bulb in the trunk compartment’s socket. I got the car without it and never bothered to replace it. I may have a spare bulb around somewhere that I can stick in. Unless there are after-market electrical modifications on the car that might be connected to the HD LPS MAXI fuse circuit that you haven’t mentioned, you need to specifically eliminate the above four devices by whatever methods necessary to assure that they are not the culprits. [/QUOTE]
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Battery drain on MAXI12 Fuse circuit..?
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