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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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

Normal Operation

The Instrument Cluster (IC) receives the Supplemental Restraint System (SRS) status from the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN) communication bus. If an SRS concern is detected, the RCM sets a DTC and sends a message to the IC to turn on the air bag warning indicator. If the SRS status message is missing or is deemed invalid for more than 5 seconds, the IC sets DTC U0151 and defaults the air bag warning indicator on.

This pinpoint test is intended to diagnose the following:

- RCM
- IC



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

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U1 CARRY OUT THE IC RESTRAINTS OUTPUT CONTROL 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 (RESTRAINT) active command mode and 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
GO to U2.

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

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U2 RETRIEVE THE RECORDED DTCs FROM THE RCM SELF-TEST


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

Yes
REFER to Restraint Systems.

No
GO to U3.

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U3 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 B1317, GO to Pinpoint Test AQ. Pinpoint Tests AQ: DTC B1317

For DTC B1318, GO to Pinpoint Test AR. Pinpoint Tests AR: DTC B1318

For DTC U0151, GO to Pinpoint Test AY. Pinpoint Tests AY: DTC U0151

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

No
If the air bag warning indicator is never on, the system is operating correctly at this time.

If the air bag warning indicator is always on, INSTALL a new RCM. REFER to Restraint Systems. TEST the system for normal operation.

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