Schematic Reference: Cruise Control Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the cruise lamp parameter in the instrument panel cluster (IPC) data list.

Does the scan tool indicate that the cruise lamp is commanded On?

Go to Step 3

Go to Step 4

With a scan tool, observe the cruise parameter in the powertrain control module (PCM) data list.

Does the scan tool indicate that the cruise control is engaged?

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Go to Step 4

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

Did you find and correct the condition?

Go to Step 6

Go to Step 5

Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2