Pinpoint Test 1: The Air Bag Warning Indicator Is Illuminated Continuously

PINPOINT TEST 1: THE AIR BAG WARNING INDICATOR IS ILLUMINATED CONTINUOUSLY

Normal Operation

The Instrument Cluster (IC) module will illuminate the air bag indicator continuously for 6 seconds after the ignition switch is placed in the RUN or ON position. If the Supplemental Restraint System (SRS) is fault free, the air bag warning indicator will turn off and remain off. If a fault is detected in the SRS, the air bag warning indicator will illuminate and remain illuminated for the rest of the ignition cycle. The Restraints Control Module (RCM) will communicate to the IC via the High-Speed Controller Area Network (HS-CAN). The IC will illuminate the air bag indicator based on messaging from the RCM or if there is no communication between the RCM and IC.

Possible Causes
- Wiring, terminals or connectors
- IC
- RCM

Diagnostic Procedure

WARNING:Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the safety canopy and cause serious personal injury or death.

WARNING:Always tighten the fasteners of the restraints control module (RCM) and impact sensor (if equipped) to the specified torque. Failure to do so may result in incorrect restraint system operation, which increases the risk of personal injury or death in a crash.

CAUTION:Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE:Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE:The SRS must be fully operational and free of faults before releasing the vehicle to the customer.