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

Instrumentation and Warning Chimes

Pinpoint Test

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

Normal Operation

The safety belt warning indicator warns the driver that their safety belt is not fastened. The safety belt status is sent to the Instrument Cluster (IC) by the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN) communication bus. When the ignition switch is turned to the RUN or START position during the first 65 seconds, the IC turns on the safety belt warning indicator. If the safety belt remains unbuckled, once the Belt-Minder(R) system is enabled, the IC flashes the indicator and turns on the Belt-Minder(R) warning chime as a secondary alert to the driver.

- DTC U0151 (Lost Communication With The Restraints Control Module [RCM]) - a continuous DTC that sets in the IC if the IC does not receive the safety belt status, or loses communication with the RCM for more than 5 seconds and the IC turns the safety belt warning indicator off.

This pinpoint test is intended to diagnose the following:

- RCM
- IC



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

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V1 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Retrieve the recorded DTCs from the IC self-test.
- Is DTC U0151 retrieved?

Yes
GO to Pinpoint Test AO. Pinpoint Tests AO: DTC U0151

No
GO to V2.

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V2 RETRIEVE THE RECORDED DTCs FROM THE RCM SELF-TEST


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

Yes
REFER to Restraint Systems.

No
GO to V3.

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V3 CARRY OUT THE IC WARNING LAMP AND CHIME 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 lamp on then off again. 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 Restraint Systems. 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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