Cruise Control System

TROUBLE CODE 31, 32 AND 33 - VACUUM PUMP, AIR VALVE, RELEASE VALVE

DIAGNOSIS:
Open or poor contact of vacuum pump motor, air valve and release
valve.

Wiring Diagram:

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

MEASURE RESISTANCE OF VACUUM PUMP MOTOR, AIR VALVE AND RELEASE VALVE.

1. Disconnect connector of vacuum pump and valve.




2. Measure resistance of vacuum pump motor, air valve and release valve.

Terminals /Specified resistance:
No.2 - No.3 / 46 Ohm (Vacuum pump motor)
No.2 - No.1 / 69 Ohm (Air valve)
No.2 - No.4 / 69 Ohm (Release valve)

PERFORM A CIRCUIT TEST IN HARNESS BETWEEN CRUISE CONTROL MODULE AND VACUUM PUMP MOTOR, AIR VALVE, RELEASE VALVE.

1. Disconnect connectors from cruise control module, vacuum pump and valve.




2. Measure resistance of harness connector between cruise control module, vacuum pump motor, air valve and release valve.

Connector & terminal / Specified resistance:
(B7) No.1 - (B94) No.5 / 10 Ohm, max.
(B7) No.2 - (B94) No.14 / 10 Ohm, max.
(B7) No.3 - (B94) No.7 / 10 Ohm, max.
(B7) No.4 - (B94) No.13 / 10 Ohm, max.