Pinpoint Test A: The Air Bag Indicator Is Illuminated Continuously

Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)

Pinpoint Tests

Pinpoint Test A: The Air Bag Warning Indicator is Illuminated Continuously

Refer to Wiring Diagram Set 46, Supplemental Restraint System for schematic and connector information. Diagrams By Number

Normal Operation

The Instrument Panel Cluster (IPC) illuminates the air bag indicator continuously for 6 seconds. If the Supplemental Restraint System (SRS) is fault free, the air bag warning indicator turns off and remains off. If a fault is detected in the SRS, the air bag warning indicator illuminates and remains illuminated for the rest of the ignition cycle until the fault is no longer detected. The Restraints Control Module (RCM) communicates to the IPC module via the High Speed Controller Area Network (HS-CAN). The IPC illuminates the air bag warning indicator based on messaging from the RCM or if there is no communication between the RCM and IPC.

This pinpoint test is intended to diagnose the following:

- IPC
- RCM

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

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(R) 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.

NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

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A1 RETRIEVE RCM DTCs

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM.
- Were any DTCs retrieved on-demand during self-test?

Yes
If DTCs were retrieved, GO to the DTC Charts for diagnostic direction. Diagnostic Trouble Code Tests and Associated Procedures

Do not clear any DTCs until all DTCs have been resolved.

No
If the RCM does communicate with the scan tool, REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection to diagnose the IPC concern.

If the RCM does not communicate with the scan tool, REFER to Module Communications Network Testing and Inspection to diagnose no power to the scan tool.

Do not clear any DTCs until all DTCs have been resolved.

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