Cruise Control System

DIAGNOSIS:
Open or poor contact of cruise control actuator motor.

Wiring Diagram:

WIRING DIAGRAM

8E1: CHECK POWER SUPPLY.
1. Turn ignition switch to OFF.
2. Disconnect connector from cruise control actuator.
3. Turn ignition switch to ON.

Connector & Terminal - [(B74) No.4 (+) - Chassis Ground (-)]:

4. Measure voltage between cruise control actuator connector and chassis ground.

CHECK: Is the voltage mare than 10 V?

YES: Go to step 8E2.

NO: Repair or replace wiring harness between fuse and relay box and cruise control actuator.

Connector & Terminal - [(B74) No.6 (+) - Chassis Ground (-)]:

8E2: CHECK GROUND LINE OF ACTUATOR.
Measure resistance between cruise control actuator connector and chassis ground.

CHECK: Is resistance less than 10 Ohms?

YES: Go to step 8E3.

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

Terminals [No.1 - No.5]:

8E3: MEASURE RESISTANCE OF ACTUATOR.
Measure resistance of cruise control actuator motor.

CHECK: Is resistance approximately 46 Ohms?

YES: Go to step 8E4.

NO: Replace cruise control actuator.

8E4: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR AND CRUISE CONTROL MODULE.
1. Disconnect connector from cruise control module.

Connector & Terminal - [(B74) No.1 - (B94) No.7]:

2. Measure resistance of harness connector between cruise control module and cruise control actuator.

CHECK: Is resistance less than 10 Ohms?

YES: Go to step 8E5.

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

Connector & Terminal - [(B74) No.5 - (B94) No.5]:

8E5: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR AND CRUISE CONTROL MODULE.
Measure resistance of harness connector between cruise control module and cruise control actuator.

CHECK: Is resistance less than 10 Ohms?

YES: Replace cruise control module.

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