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 the terminal 3 and grounding terminal 4.
Verify that the mode control actuator operates to the vent mode when connecting in the reverse.
1. - 2. - 3. Defog 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 6 and 5.
Specification
Door position | Voltage (V) | Error detecting |
Vent | 0.45 ± 0.3 | Low voltage: 0.1V or less |
Bi-Level | 1.4 ± 0.3 |
|
Floor | 2.45 ± 0.3 |
|
Mix | 3.5 ± 0.3 |
|
Defog | 4.55 ± 0.3 | High voltage: 4.9V or more |
It will feedback current position of actuator to controls.
If the measured voltage is not specification, substitute with a known-good mode control actuator and check for proper operation.
If the problem is corrected, replace the mode control actuator.
Disconnect the negative (-) battery terminal.
Remove the driver side shower duct (A) after loosening the screws.
Disconnect the connector and then remove the mode control actuator (A) after loosening the mounting screws.
Installation is the reverse order of removal.
