Schematic Reference : Cruise Control Schematics

Connector End View Reference: Cruise Control Connector End Views or Engine Control Module Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Attempt to adjust the Gap Switch parameters up and down.
4. With a scan tool, observe the ACC Gap Switch Voltage parameter in the BCM data list.

Does the scan tool display voltage values at or near the specified values for the gap switch up, down, and inactive states?

Up-3.1 V

Down-1.5 V

Inactive-0 V

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Turn OFF the ignition.
2. Disconnect the body control module (BCM) connector C2.
3. Turn ON the ignition, with the engine OFF.
4. Measure the voltage between the gap adjustment switch signal circuit and a good ground while momentarily pressing the gap switch up position.

Does the voltage measure near the specified value?

3.1 V

Go to Step 6

Go to Step 4

Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

1. Turn OFF the ignition.
2. Disconnect the gap switch.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test light between the gap switch supply voltage circuit and a good ground.

Does the test light illuminate?

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Go to Step 5

Go to Step 8

Test the gap adjustment switch signal circuit for an open, for a short to ground or for a high resistance. Refer to Circuit Testing and to Wiring Repairs .

Did you find and correct the condition?

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Go to Step 11

Go to Step 7

Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

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Go to Step 11

Go to Step 9

Inspect for poor connections at the harness connector of the gap switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

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Go to Step 11

Go to Step 10

Repair the open, the short to ground or the high resistance in the gap switch supply voltage circuit. Refer to Wiring Repairs .

Did you complete the repair?

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Go to Step 11

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Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

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Go to Step 11

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Replace the steering wheel control switch assembly. Refer to Steering Wheel Control Switch Assembly Replacement .

Did you complete the replacement?

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Go to Step 11

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2