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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test L: 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. During 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. During this first 70 seconds the indicator illuminates when the driver safety belt is unbuckled (with a person in the seat) and turns off whenever the safety belt(s) in the occupied front row seat(s) is buckled. The indicator illuminates again if a safety belt is unbuckled after both are buckled and the 70 seconds has 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 communication network. The RCM signals the IC, when the safety belt is unfastened, to illuminate the safety belt warning indicator.

This pinpoint test is intended to diagnose the following:

- RCM
- IC



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

-------------------------------------------------
L1 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 Air Bag Systems.

No
GO to L2.

-------------------------------------------------
L2 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded continuous memory IC DTCs.
- Is DTC U1900 recorded?

Yes
REFER to Information Bus to diagnose communication with the RCM.

No
GO to L3.

-------------------------------------------------
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 safety belt warning indicator (SBLT_LAMP) active command. Command the safety belt warning indicator active command 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 Air Bag 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.

-------------------------------------------------