Actuator Assembly
NOTE:
If testing results in replacement of actuator solenoid valve assembly, ensure NEW "O" rings are installed.
- Turn ignition off. Disconnect actuator cable from actuator. Unplug 4-pin connector at actuator. Actuator is located against firewall on right side of engine compartment. Using jumper wires, connect battery voltage to terminal No. 1 of actuator connector and simultaneously ground terminals No. 1, 2 and 3 of actuator connector. SeeFig 1 .
- Disconnect actuator vacuum line at vacuum check valve. Connect a vacuum pump to actuator vacuum line. Ensure vacuum check valve is between vacuum pump and actuator. Apply vacuum to system.
- Actuator rod should pull in completely. If actuator rod pulls in completely, go to step 5). If actuator rod pulls in partially or not at all, check for leaking vacuum line. Repair as necessary.
- If vacuum line is not leaking, check actuator solenoid valve assembly. See ACTUATOR SOLENOID VALVE ASSEMBLY . If actuator solenoid valve assembly tests are okay, actuator solenoid valve assembly is okay electrically, but has a mechanical malfunction. Replace actuator solenoid valve assembly for mechanical malfunction.
- With voltage still applied to actuator connector, try to pull actuator rod out by hand. If actuator rod cannot be pulled out by hand, go to next step. If actuator rod can be pulled out by hand, replace malfunctioning actuator assembly.
- Disconnect ground wire from actuator connector terminal No. 3. SeeFig 1 . Actuator rod should return to rest position. If actuator rod does not return to rest position, replace malfunctioning actuator solenoid valve assembly. If actuator rod returns to rest position, repeat steps 1) through 6), but when step 6) is reached, disconnect ground from actuator connector terminal No. 1 instead of terminal No. 3. SeeFig 1 .
- If actuator rod returns to rest position after disconnecting ground from actuator terminal No. 1, actuator assembly is functioning properly. If actuator rod does not return to rest position after disconnecting ground from actuator terminal No. 1, replace malfunctioning actuator solenoid valve assembly.