Test SC-52B - Code 34, Cruise Control Vacuum Solenoid Control Circuit
NOTE:
Perform TEST FC-1A
before proceeding.
- Turn ignition switch to OFF position. Disconnect and inspect Powertrain Control Module (PCM) 60-pin connector. If connector is not okay, repair connector as necessary. Perform VERIFICATION PROCEDURE SC-VER . If connector is okay, turn ignition switch to ON position.
- Put cruise control ON/CRUISE/OFF switch in ON position. Put DRB-II in voltmeter mode. Using DRB-II, check voltage at PCM connector terminal No. 33, vacuum solenoid control circuit (Tan/Red wire). If voltage is more than 10 volts, go to TEST SC-52C . If voltage is less than 10 volts, disconnect cruise control servo 4-pin connector. Inspect connector.
- If connector is not okay, repair connector as necessary. Perform VERIFICATION PROCEDURE SC-VER . If connector is okay, turn ignition off. Put DRB-II in ohmmeter mode. Using DRB-II, check resistance at cruise control servo connector terminal No. 4, vacuum solenoid control circuit (Tan/Red wire). If resistance is less than 5 ohms, repair short to ground in Tan/Red wire. Perform VERIFICATION PROCEDURE SC-VER .
- If resistance is more than 5 ohms, using an external ohmmeter, check resistance of vacuum solenoid control circuit (Tan/Red wire) between PCM connector terminal No. 33 and cruise control servo connector terminal No. 4.
- If resistance is less than 5 ohms, replace cruise control servo. Perform VERIFICATION PROCEDURE SC-VER . If resistance is more than 5 ohms, repair open in Tan/Red wire. Perform VERIFICATION PROCEDURE SC-VER .