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

During normal operation, the Instrument Cluster (IC) module will illuminate the air bag indicator continuously for 6 seconds after the ignition is placed in the 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 until the fault is no longer detected. The Restraints Control Module (RCM) communicates to the IC module via the High Speed Controller Area Network (HS-CAN). The IC module will illuminate the air bag warning indicator based on messaging from the RCM or if there is no communication between the RCM and IC module.

This pinpoint test is intended to diagnose the following:
- IC module
- RCM



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

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 Restraints Control Module (RCM) DTC Chart for pinpoint test 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 Instrument Panel, Gauges and Warning Indicators to diagnose the IC module concern.

If the RCM does not communicate with the scan tool, REFER to Information Bus No Power To
The Scan Tool, to diagnose no power to the scan tool.

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

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