Circuit Description
Battery rundown protection (inadvertent power) is controlled by the body control
module (BCM) for all devices powered by circuit 1732. The devices include glove compartment
lamp, rear dome lamps, cargo lamp, map lamps, reading lamps, sunshade mirror lamps.
Should any device remain on, the BCM will turn inadvertent power off after 20
minutes to conserve battery energy if there has not been an ignition switch transition
to RUN or START, an RKE lock or unlock, a trunk/liftgate operation or a driver/passenger
door open/close. Inadvertent power shutoff is disabled in ignition RUN or START.
Important: To prevent battery rundown on newly delivered vehicles, inadvertent power is
limited to 3 minutes until vehicle mileage exceeds 15 miles.
Conditions for Setting the DTC
| • | Circuit 1732 is shorted to ground. |
| • | Circuit 1640 is open or shorted to ground. |
| • | No light will illuminate in I/P. |
| • | Interior lamps are active. |
Diagnostic Aids
| • | Inspect wiring harness for damage. Check for broken or chaffed insulation. |
| • | If fault is suspected to be intermittent, wiggling the harness wiring
may help in locating fault. |
| • | Dome lights will not work until B1482 is cleared. |
| • | Check for poor connection at the BCM. Inspect harness connectors for backed
out terminals, improper terminal mating, broken connector locks, improperly formed
or damaged terminals and poor terminal to wire connection. The terminal is crimped
over wire insulation and not conductors. |
