Actuator

3B41 : CHECK FUNCTION OF ACTUATOR.




1. Disconnect vacuum hose (A) from actuator (B).




2. Connect vacuum pump as shown in figure.
3. Make sure that cruise control cable moves smoothly and quickly when a vacuum pressure of 40.0 kPa (300 mmHg, 11.81 inHg) is applied to actuator.

CHECK: Does cruise control cable have a stroke of 35 mm (1.38 in) ?

YES: Go to step 3B42.

NO: Replace actuator. Go to step 3B42.

NOTE:
- When vacuum pressure is released from condition 3) above, make sure the cable returns to its original position smoothly and quickly.
- After inspection, disconnect vacuum pump and connect vacuum hose.

3B42: MEASURE RESISTANCE OF VALVE.
1. Disconnect connector from actuator.




2. Measure resistance between terminals of actuator.

CHECK: Is resistance less than 100 ohms ?

YES: Go to step 3B43.

NO: Replace actuator.

3B43: MEASURE RESISTANCE OF VALVE.




Measure resistance between terminals of actuator.

CHECK: Is resistance less than 69 ohms ?

YES: Go to step 3B44.

NO: Replace actuator.

3B44: MEASURE RESISTANCE OF VALVE.




Measure resistance between terminals of actuator.

CHECK: Is resistance less than 69 ohms ?

YES: Go to step 3B45.

NO: Replace actuator.

3B45: CHECK FOR LEAKAGE AND STICKING OF VALVES.
1. Disconnect connector from actuator.




2. Make sure that cruise control cable moves smoothly when connecting + (positive) battery cable to terminal No.2 and - (negative) battery cable to terminals No.1, 3 and 4 of actuator connector.

CHECK: Does cruise control cable have a stroke of 35 mm (1.38 in) within 3 seconds ?

YES: Go to step 3B46.

NO: Replace actuator. Go to step 3B46.

3B46: CHECK FOR LEAKAGE AND STICKING OF VALVES.
When the battery cable is disconnected from former condition, make sure the cable returns to its original position smoothly.

CHECK: Does cruise control cable get back to its original position within 1.5 seconds ?

YES: Go to step 3B47.

NO: Replace actuator. Go to step 3B47.

3B47: CHECK CABLE MOVEMENT.




Connect + (positive) battery cable to terminal No. 2 and - (negative) battery cable to terminals No.1, 3 and 4 of actuator connector.

CHECK: Does cruise control perform pull operation ?

YES: Go to step 3B48.

NO: Replace actuator. Go to step 3B48.

3B48: CHECK CABLE MOVEMENT.




Connect + (positive) battery cable to terminal No. 2 and - (negative) battery cable to terminals No.1 and 4 of actuator connector.

CHECK: Does cruise control perform hold operation ?

YES: Go to step 3B49.

NO: Replace actuator. Go to step 3B49.

3B49: CHECK CABLE MOVEMENT.




Connect + (positive) battery cable to terminal No. 2 and - (negative) battery cable to terminal No.4 of actuator connector.

CHECK: Does cruise control perform release operation ?

YES: Go to step 3B51.

NO: Replace actuator. Go to step 3B51.