Pinpoint Tests AM: The Turn Signal On Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Test AM: The Turn Signal On Warning Chime Is Inoperative

Normal Operation

The turn signal on warning chime is an internal function of the Lighting Control Module (LCM). The LCM monitors the turn signal switch status and receives the odometer rolling count data from the Instrument Cluster (IC) over the Medium Speed Controller Area Network (MS-CAN) communication bus.

This pinpoint test is intended to diagnose the following:

- Turn signal on warning chime disabled
- LCM



PINPOINT TEST AM: THE TURN SIGNAL ON WARNING CHIME IS INOPERATIVE

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AM1 CHECK THE LCM CONFIGURATION


- Verify the turn signal on warning chime is enabled.
- Is the turn signal warning chime enabled?

Yes
GO to AM2.

No
ENABLE the turn signal on warning chime function. REFER to Information Bus. TEST the system for normal operation.

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AM2 CHECK OPERATION OF THE TURN SIGNALS


- Ignition ON.
- Operate the turn signals.
- Do the turn signal lamps operate correctly?

Yes
GO to AM3.

No
REFER to Turn Signals. Testing and Inspection

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AM3 CHECK ODOMETER OPERATION IN THE IC


- Observe the odometer display.
- Does the odometer operate correctly?

Yes
INSTALL a new LCM.

No
Go To Pinpoint Test E. Pinpoint Test E: The Speedometer/Odometer Is Inoperative

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