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 switch is placed to the RUN or ON position and then turn off. If the Supplemental Restraint System (SRS) is fault free, the air bag warning indicator will remain off. The Restraints Control Module (RCM) will communicate to the IC module via the High Speed Controller Area Network (HS-CAN). The IC module will illuminate the air bag 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:
- Wiring, terminals or connectors
- IC module
- 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.

NOTE: When a new PCM is installed, the air bag warning indicator will illuminate when the ignition switch is ON. The warning indicator will remain on until PCM configuration is restored. Clear RCM DTCs.

NOTE: When installing a new RCM, always make sure the correct RCM is being installed. RCMs are not interchangeable between vehicles or vehicle lines. If an incorrect RCM is installed, erroneous DTCs and incorrect diagnosis will result.

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A1 RETRIEVE RCM DTCs


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

Yes
If DTCs were retrieved, GO to the Supplemental Restraint System (SRS) DTC Chart 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 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 to diagnose the no communication concern.

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

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