Turn the ignition switch OFF.
Disconnect the auto defogging connector.
Verify that the auto defogging actuator operates to the open position when connecting 12V to the terminal 3 and grounding terminal 7.
Verify that the auto defogging actuator operates to the close position when connecting in the reverse.
1. - 2. - 3. Open 4. Sensor (+ 5V) | 5. Feedback signal 6. Sensor ground 7. Close |
Connect the auto defogging actuator connector.
Turn the ignition switch ON.
Check the voltage between terminals 6 and 5.
Door position | Voltage (V) | Error detecting |
Defog OFF (Close) | 0.3 ± 0.15 | Low voltage : 0.1V or less |
Defog ON (Open) | 4.7 ± 0.15 | High voltage : 4.9V or more |
It will feedback the current position of the actuator to the controls.
If the measured voltage is not within specification, substitute with a known-good auto defogging actuator and check for proper operation.
Replace the auto defogging actuator if it is proved that there is a problem with it.
