Repair Procedures: Inspection
- 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 4 and grounding terminal 3.
Verify that the mode control actuator operates to the vent mode when connecting in the reverse.
- Connect the mode control actuator connector.
- Turn the ignition switch ON.
- Check the voltage between terminal 6 and 7.
Specification
VOLTAGE SPECIFICATION (WITH AUTO DEFOGGING ACTIVATED)Door position Voltage (V) Error detecting Vent 0.9 ± 0.3 Low voltage: 0.1V or less Bi-Level 0.9 ± 0.3 Floor 4.1 ± 0.3 Mix 4.1 ± 0.3 Defog 4.1 ± 0.3 High voltage: 4.9V or more VOLTAGE SPECIFICATION (WITH AUTO DEFOGGING DEACTIVATED)Door position Voltage (V) Error detecting Vent 2.5 ± 0.3 Low voltage: 0.1V or less Bi-Level 2.5 ± 0.3 Floor 4.1 ± 0.3 Mix 4.1 ± 0.3 Defog 4.1 ± 0.3 High voltage: 4.9Vor 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.