Cruise Control System

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:

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.

Terminals: No. 2 - No. 3:

Terminals
No.2 - No.3:

CHECK : Is resistance less than 22 ohms?
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.

Terminals: No. 2 - No. 1:

Terminals
No.2 - No.1:

CHECK : Is resistance less than 55 ohms?
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.

Terminals: No. 2 - No. 4:

Terminals
No.2 - No.4:

CHECK : Is resistance less than 55 ohms?
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.

Connector & Terminal: (B7) No. 1 - (B94) No. 1:

Connector & terminal
(B7) No.1 - (B94) No.1:

CHECK : Is resistance less than 10 ohms?
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.

Connector & Terminal: (B7) No. 2 - (B94) No. 8:

Connector & terminal
(B7) No.2 - (B94) No.8:

CHECK : Is resistance less than 10 ohms?
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.

Connector & Terminal: (B7) No. 3 - (B94) No. 11:

Connector & terminal
(B7) No.3 - (B94) No.11:

CHECK : Is resistance less than 10 ohms?
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.

Connector & Terminal: (B7) No. 4 - (B94) No. 2:

Connector & terminal
(B7) No.4 - (B94) No.2:

CHECK : Is resistance less than 10 ohms?
YES : Replace cruise control module.
NO : Repair or replace wiring harness between actuator and cruise control module.