Pinpoint Tests AK: The Safety Belt Warning Chime Is Inoperative/The Belt-Minder(R) Feature Does Not Operate

Instrumentation, Message Center and Warning Chimes

Pinpoint Test AK: The Safety Belt Warning Chime Is Inoperative/The Belt-Minder(R) Feature Does Not Operate

Normal Operation

The Instrument Panel Cluster (IPC) receives the safety belt and Belt-Minder(R) requests from the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN). The safety belt warning chime sounds for approximately 6 seconds when the driver safety belt is not fastened and the ignition is changed from the OFF or ACC state to the RUN or START state.

The Belt-Minder(R) feature supplements the safety belt warning function and is enabled after the safety belt warning is complete. The Belt-Minder(R) simultaneously sounds the chime and illuminates the safety belt warning lamp in the IPC once the vehicle speed has exceeded 5 km/h (3 mph), and remains active for 5 minutes from the time it is started.

There are 2 Belt-Minder(R) strategies used and implemented by the IPC as commanded by the RCM. The 2 strategies are designed to provide an increased intensity level of the chime. Belt-Minder(R) A provides 6 one-second sequences of 0.5-second on/0.5-second off for the first minute of the Belt-Minder(R) warning. Belt-Minder(R) B provides 6 one-second sequences of 0.2-second on/0.2-second off then 0.3-second on/0.3-second off for the remainder of the Belt-Minder(R) warning.

NOTE: Make sure the safety belt/Belt-Minder(R) chime operation is verified with the vehicle moving at least 9.7 km/h (6 mph).

This pinpoint test is intended to diagnose the following:

- Belt-Minder(R) deactivated
- Safety belt warning indication concern
- Speedometer concern
- IPC

PINPOINT TEST AK: THE SAFETY BELT WARNING CHIME IS INOPERATIVE/THE BELT-MINDER(R) FEATURE DOES NOT OPERATE

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AK1 CHECK THE HEADLAMPS ON WARNING CHIME OPERATION

- Ignition OFF.
- Place the headlamp switch in the HEADLAMP position.
- Open the LH front door and observe the headlamps on warning chime operation.
- Does the headlamps on warning chime operate correctly?

Yes
GO to AK2.

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

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AK2 CHECK THE DRIVER SAFETY BELT BUCKLE SWITCH

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: RCM PIDs.
- Monitor the RCM driver safety belt buckle PID (SBELT_D_ST) while buckling and unbuckling the driver safety belt.
- Does the PID display BUCKLED with the safety belt buckled and UNBUCKLED with the safety belt unbuckled?

Yes
GO to AK3.

No
REFER to Supplemental Restraint System Testing and Inspection.

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AK3 CHECK THE SAFETY BELT WARNING INDICATOR FOR CORRECT OPERATION

- Ignition ON.
- Within one minute, buckle then unbuckle the LH front safety belt.
- With the engine running, verify the safety belt warning indicator illuminates with the safety belt unbuckled and turns off when buckled.
- Does the safety belt warning indicator operate correctly?

Yes
GO to AK4.

No
GO to Pinpoint Test Z. Pinpoint Test Z: The Safety Belt Warning Indicator Is Never/Always On

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AK4 CHECK THE SPEEDOMETER OPERATION

- Verify the speedometer is operating correctly.
- Does the speedometer operate correctly?

Yes
GO to AK5.

No
GO to Pinpoint Test E. Pinpoint Test E: The Speedometer Is Inoperative

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AK5 CHECK THE BELT-MINDER(R) CONFIGURATION

- Verify the Belt-Minder(R) is activated or configured on for the seating position in question. Refer to Belt-Minder(R) Deactivating/Activating Service and Repair to configure without a scan tool.
- Is the Belt-Minder(R) activated for the seating position in question?

Yes
If the Belt-Minder(R) is always on above 5 km/h (3 mph) with the safety belt unfastened, the system is operating normally.

If the Belt-Minder(R) is always on with the safety belt fastened or never on with the safety belt unfastened above 9.7 km/h (6 mph), INSTALL a new RCM. REFER to Supplemental Restraint System Service and Repair. TEST the system for normal operation.

No
ACTIVATE the Belt-Minder(R) for the seating position in question. REFER to Belt-Minder(R) Deactivating/Activating Service and Repair. TEST the system for normal operation.

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