DEFINITION: On vehicles equipped with RPO UD4, the audible alarm does not sound when the vehicle speed exceeds 120 km/h.

Did you review the audible warning circuit description and perform the necessary inspections?

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Go to Step 2

Go to Symptoms - Audible Warnings

1. Block the front wheels.
2. Raise and support the rear axle to allow safe operation of the vehicle:

2.1.	Start the engine.

2.2.	Place in Drive.

2.3.	Slowly raise vehicle speed to 125 Km/h.

3. Listen for the alarm to sound as the vehicle speed exceeds 120 km/h.
4. Gradually slow the vehicle to a stop.
5. Place the shifter in Park.
6. Turn the ignition switch OFF.

Does the alarm sound as the vehicle speed exceeds 120 km/h?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Disconnect multi-function alarm module connector C2.
2. Disconnect vehicle control module (VCM) connector C4.
3. Connect a J 39200 DMM between multi-function alarm module connector C2 cavity B and VCM connector C4 cavity 4 for CKT 389 (DK GRN). Refer to Circuit Testing in Wiring Systems.

Is continuity present?

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Go to Step 5

Go to Step 4

Locate and repair the open in CKT 389 (DK GRN) between the multi-function alarm module and the VCM. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 6

Go to Step 3

Replace the multi-function alarm module. Refer to Multifunction Alarm Module Replacement .

Does the alarm now operate?

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Go to Step 6

Go to Step 3

Operate the vehicle in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3