Turn the ignition switch OFF.
Disconnect the mode control actuator connector.
Verify that the mode control actuator operates to the defog mode when connecting 12V to terminal 3 and grounding terminal 4.
Verify that the mode control actuator operates to the vent mode when connected in reverse.
1. - 2. - 3. Defrost mode 4. Vent mode | 5. Sensor ground 6. Feedback signal 7. Sensor (+ 5V) |
Connect the mode control actuator connector.
Turn the ignition switch ON.
Check the voltage between terminal 5 and 6.
Specification
Door position | Voltage (V) | Error detecting |
Vent | 0.45±0.15 | Low voltage : 0.1V or less High voltage : 4.9V or less |
Defrost | 4.55±0.15 |
It will feedback the current position of the actuator to controls.
If the measured voltage is not within specification, substitute with a known-good mode control actuator and check for proper operation.
Replace the mode control actuator if it is proved that there is a problem with it.
