Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- With the scan tool, read DTCs.
Is the DTC active?
Yes
- Go To 2
No
- Test complete.
- With the scan tool, read DTCs.
- CHECK CONNECTIONS FOR POWERTRAIN CONTROL MODULE AND CRUISE CONTROL STALK
- Check for the presence of loose electrical connections at the Powertrain Control Module and the Cruise Control Stalk.
Were any loose electrical connections present?
Yes
- Go To 3
No
- Restore the correct connections.
- Check for the presence of loose electrical connections at the Powertrain Control Module and the Cruise Control Stalk.
- CHECK THE CRUISE CONTROL STALK WIRING CONTINUITY
- Check the correct continuity of the wiring between the Cruise Control Stalk and the Powertrain Control Module.
Does the wiring have continuity?
Yes
- Go To 4
No
- Restore the correct continuity for the wiring.
- Check the correct continuity of the wiring between the Cruise Control Stalk and the Powertrain Control Module.
- CHECK CRUISE CONTROL STALK WIRING FOR A SHORT
- Check for short circuits on the Cruise Control Stalk wiring.
Was the wiring shorted?
Yes
- Restore the correct insulation for the wiring.
No
- Go To 5
- Check for short circuits on the Cruise Control Stalk wiring.
- CHECK OPERATION OF THE CRUISE CONTROL STALK
- Check that the Cruise Control Stalk is working properly.
Is the Cruise Control Stalk working properly?
Yes
- Go To 6
No
- Replace the Cruise Control Stalk. Refer to SWITCH, SPEED CONTROL, REMOVAL AND INSTALLATION .
- Check that the Cruise Control Stalk is working properly.
- CHECK OPERATION OF THE POWERTRAIN CONTROL MODULE
- Check that the Powertrain Control Module is working properly.
Is the Powertrain Control Module working properly?
Yes
- End of diagnosis.
No
- Replace the Powertrain Control Module. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
- Check that the Powertrain Control Module is working properly.