Cruise Control System

DIAGNOSTIC CODE 21, 22 AND 23 (VACUUM VALVE, VENT 2 VALVE, VENT 1 VALVE)

DIAGNOSIS:
- Open or poor contact of vacuum valve, vent 2 valve and vent 1 valve.

TROUBLE SYMPTOM:
- Cruise control cannot be set. (Cancels immediately.)

Wiring Diagram:

WIRING DIAGRAM:

8F1 : MEASURE RESISTANCE OF VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE.




1. Disconnect connector from actuator.
2. Measure resistance of vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 22 Ohm?

YES: Go to step 8F2.

NO: Replace actuator.

8F2: MEASURE RESISTANCE OF VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE.




Measure resistance of vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 55 Ohm?

YES: Go to step 8F3.

NO: Replace actuator.

8F3: MEASURE RESISTANCE OF VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE.




Measure resistance of vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 55 Ohm?

YES: Go to step 8F4.

NO: Replace actuator.


8F4: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR (VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE) AND CRUISE CONTROL MODULE.




1. Disconnect connector from cruise control module.
2. Measure resistance of harness connector between cruise control module, vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 10 Ohm?

YES: Go to step 8F5.

NO: Repair or replace wiring harness between actuator and cruise control module.

8F5: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR (VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE) AND CRUISE CONTROL MODULE.




Measure resistance of harness connector between cruise control module, vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 10 Ohm?

YES: Go to step 8F6.

NO: Repair or replace wiring harness between actuator and cruise control module.

8F6: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR (VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE) AND CRUISE CONTROL MODULE.




Measure resistance of harness connector between cruise control module, vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 10 Ohm?

YES: Go to step 8F7.

NO: Repair or replace wiring harness between actuator and cruise control module.

8F7: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR (VACUUM VALVE, VENT 2 VALVE AND VENT 1 VALVE) AND CRUISE CONTROL MODULE.




Measure resistance of harness connector between cruise control module, vacuum valve, vent 2 valve and vent 1 valve.

CHECK: Is resistance less than 10 Ohm?

YES: Replace cruise control module.

NO: Repair or replace wiring harness between actuator and cruise control module.