Schematic Reference: Cruise Control Schematics

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

1. Turn OFF the ignition.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF.
4. With the scan tool, command the Lamp Test parameter ON, in the IPC Output Controls.

Does the cruise indicator illuminate in the instrument panel cluster (IPC)?

Go to Step 4

Go to Step 3

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 5

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Replace the engine control module (ECM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

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Operate the system in order to verify the repair.

Does the system operate properly?

System OK

Go to Step 2