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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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

Normal Operation

The safety belt switch is hardwired to the Restraints Control Module (RCM). The RCM sends a signal on circuit 1083 (LB/BK) to the Lighting Control Module (LCM) when the safety belt is fastened or unfastened, communicating the safety belt switch status. The LCM sends the safety belt switch status to the Instrument Cluster (IC) over the Standard Corporate Protocol (SCP) communication network, to illuminate the safety belt warning indicator.

This pinpoint test is intended to diagnose the following:

- LCM
- IC



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

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G1 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 G2.

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G2 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 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 selected on, and turn off when selected off?

Yes
INSTALL a new LCM. 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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