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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test L: 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 greater 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 L: THE AIR BAG WARNING INDICATOR IS NEVER/ALWAYS ON

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L1 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded IC DTCs from the self-test.
- Is DTC U0151 recorded?

Yes
GO to Pinpoint Test AZ. Pinpoint Test AZ: DTC U0151

No
GO to L2.

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L2 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 Supplemental Restraint System Testing and Inspection to continue diagnosis of the restraint system.

No
GO to L3.

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L3 CARRY OUT THE IC INDICATOR LAMP 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 (Airbag) active command 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. REFER to Supplemental Restraint System Service and Repair. TEST the system for normal operation.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). ACTIVATE the air bag system. REFER to Supplemental Restraint System Supplemental Restraint System (SRS) Deactivation and Reactivation. TEST the system for normal operation.

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