Cruise Control System

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

Wiring Diagram:

WIRING DIAGRAM

8F1: 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 and chassis ground.

CHECK: Is the voltage more than 10 V?

YES: Go to step 8F2.

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

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

8F2: CHECK GROUND LINE OF ACTUATOR.
Measure resistance between cruise control actuator and chassis ground.

CHECK: Is resistance less than 10 ms?

YES: Go to step 8F3.

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

Terminals [No.2 - No.3]:

8F3: MEASURE RESISTANCE OF ACTUATOR CLUTCH.
Measure resistance of cruise control actuator clutch.

CHECK: Is resistance approximately 46 Ohms?

YES: Go to step 8F4.

NO: Replace cruise control actuator.

8F4: PERFORM A CIRCUIT TEST IN HARNESS BETWEEN ACTUATOR AND CRUISE CONTROL MODULE.
1. Disconnect connector from cruise control module.

Connector & Terminal - [(B74) No.2 - (B94) No.13]:

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 8F5.

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

Connector & Terminal - [(B74) No.3 - (B94) No.14]:

8F5: 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.