Circuit Description
The passlock sensor is powered by CKT 812. The passlock sensor is grounded
by CKT 1057. Passlock sensor data is supplied to the body control module (BCM)
by CKT 1836.
The passlock sensor data supplied to the BCM is in the form of V-codes or voltage
codes. When the proper ignition key is turned in the ignition switch, the correct
V-code is supplied to the BCM. The BCM responds by sending a serial data password
to the engine controller allowing the engine to run.
Conditions for Setting the DTC
| • | Ignition is in OFF position |
| • | CKT 812 shorted-to-battery voltage |
Diagnostic Aids
| • | 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 -- terminal crimped
over wire insulation and not conductors. |
| • | Inspect wiring harness for damage. Check for broken or chaffed insulation. |
| • | Check for poor connection at the passlock sensor. |
| • | If fault is suspected to be intermittent, wiggling harness wiring may
help in locating fault. |
