Pinpoint Test P: The Air Bag Warning Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test P: The Air Bag Warning Indicator Is Never/Always On

Normal Operation

The air bag warning indicator is used to provide a status of the Supplemental Restraint System (SRS). The Instrument Cluster (IC) receives a message from the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN). If an air bag system concern is detected, a DTC is logged and the RCM sends a message to the IC to illuminate the air bag warning indicator. If the IC does not receive the restraints control command, the IC illuminates the air bag warning indicator.

This pinpoint test is intended to diagnose the following:

- RCM
- IC



PINPOINT TEST P: THE AIR BAG WARNING INDICATOR IS NEVER/ALWAYS ON

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P1 RETRIEVE THE RECORDED DTCs FROM THE RCM SELF-TEST


- Retrieve the recorded RCM DTCs from the self-test.
- Are any RCM DTCs recorded?

Yes
REFER to Air Bag Systems.

No
GO to P2.

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P2 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded IC DTCs from the self-test.
- Are any DTCs recorded?

Yes
For DTC U1900, REFER to Information Bus.

For all other DTCs, REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes

No
GO to P3.

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P3 CARRY OUT THE IC INDICATOR LAMP ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC air bag warning indicator (AIRBAG) active command. Command the air bag warning indicator on and off. Observe the air bag warning indicator.
- Does the air bag warning indicator illuminate when commanded on, and turn off when commanded off?

Yes
INSTALL a new RCM. TEST the system for normal operation.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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