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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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

Normal Operation

The safety belt warning indicator informs the driver that the driver safety belt is unbuckled. The first 70 seconds after the ignition switch transitions from OFF or ACC to RUN or START, the safety belt warning indicator and the associated chime are used as a reminder to the driver that the driver safety belt is not buckled. In this first 70 seconds, the indicator illuminates when the driver safety belt is unbuckled and turns off whenever the safety belt is buckled. The indicator illuminates again if a safety belt is unbuckled after being buckled with the 70-second timer not yet expired.

The safety belt switch is hardwired to the Restraints Control Module (RCM). The Instrument Cluster (IC) receives the safety belt switch status from the RCM over the High Speed Controller Area Network (HS-CAN) communication bus. The RCM signals the IC, when the safety belt is unfastened, to illuminate the safety belt warning indicator.

If the safety belt status message is missing for less than 5 seconds, the safety belt warning remains in the last indication mode (on or off). If the safety belt status message is missing for more than 5 seconds, the IC sets DTC U0151 and defaults the safety belt warning indicator off.

This pinpoint test is intended to diagnose the following:

- RCM
- IC



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

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K1 RETRIEVE THE RECORDED RCM DTCs FROM THE SELF-TEST


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

Yes
REFER to Restraint Systems.

No
GO to K2.

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K2 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 DTC Charts. Instrumentation, Message Center and Warning Chimes

No
GO to K3.

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K3 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 and 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 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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