Pinpoint Test Y: The Safety Belt Warning Indicator Is Never/Always On

Instrumentation and Warning Chimes

Pinpoint Tests

Pinpoint Test Y: The Safety Belt Warning Indicator Is Never/Always On

Normal Operation

The Restraints Control Module (RCM) monitors the safety belt position through the safety belt buckle switch. The RCM provides the safety belt buckle status to the Instrument Cluster (IC) over the High Speed Controller Area Network (HS-CAN) communication bus.

If the IC does not receive the safety belt buckle switch status from the RCM for greater than 5 seconds, the IC sets DTC U0151 and defaults the safety belt warning indicator on. If the RCM message is deemed invalid by the IC for greater than 5 seconds, the IC defaults the safety belt warning indicator on.

This pinpoint test is intended to diagnose the following:

- RCM
- IC


PINPOINT TEST Y: THE SAFETY BELT WARNING INDICATOR IS NEVER/ALWAYS ON

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Y1 RETRIEVE THE RECORDED RCM DTCs FROM THE SELF-TEST


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

Yes
REFER to Supplemental Restraint System Diagnostic Trouble Code Tests and Associated Procedures.

No
GO to Y2.

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Y2 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 U0151, GO to Pinpoint Test AN. Pinpoint Test AN: DTC U0151

For all other DTCs, REFER to DTC Charts. Diagnostic Trouble Code Tests and Associated Procedures

No
GO to Y3.

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Y3 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 safety belt warning indicator (SBLT_LAMP) active command. Command the safety belt warning indicator on and off. Observe the safety belt warning indicator.
- Does the safety belt warning indicator illuminate when commanded on, and turn off when commanded off?

Yes
INSTALL a new RCM. REFER to Supplemental Restraint System Driver Air Bag Module. TEST the system for normal operation.

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

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