PINPOINT TEST A : The Cruise Control Is Inoperative
- A1 CHECK FOR PCM DTCs
- Ignition ON.
- Using a scan tool, perform the PCM KOEO self-test.
Are any DTCs recorded?
Yes REFER to Electronic Engine Controls . No GO to A2. - A2 CHECK FOR SCCM DTCs
- Using a scan tool, perform the SCCM self-test.
Are any DTCs recorded?
Yes REFER to Steering Column Switches . No GO to A3. - A3 CHECK THE STOPLAMP SWITCH (BOO1) AND CRUISE CONTROL DEACTIVATOR SWITCH (BOO2) PIDs
- Using a scan tool, view the Powertrain - Cruise Control PIDs.
- Monitor the powertrain PIDs BOO1 (stoplamp switch) and BOO2 (cruise control deactivator switch) while applying and releasing the brake pedal.
Brake Pedal Position BOO1 PID BOO2 PID Released Off Off Applied On On
Do the PID values agree with the brake pedal position?
Yes GO to A4. No Go to Pinpoint Test B . - A4 CHECK THE CRUISE CONTROL SWITCH
- Using a scan tool, view PCM - Cruise Control PIDs.
- Press each cruise control switch while monitoring the cruise control switch PID SCCS.
Cruise Control Switch SCCS PID Value - None pressed RES RESUME CNCL CANCEL ON/OFF (pressed up) On ON/OFF (pressed down) Off SET (pressed up) SET/+ SET (pressed down) SET/-
Does the PID value agree with the switch position?
Yes GO to A5. No If only one switch does not display the correct PID value, INSTALL a new LH steering wheel switch. REFER to Steering Column Switches . Otherwise, Go to Pinpoint Test C . - A5 CHECK FOR CORRECT PCM OPERATION
- Disconnect and inspect all the PCM connectors.
- Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect the PCM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new PCM. REFER to Electronic Engine Controls - 2.0L GTDI, REFER to Electronic Engine Controls - 3.5L Ti-VCT or REFER to REFER to Electronic Engine Controls - 3.5L GTDI. No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.