Turn the ignition switch OFF.
Disconnect the temperature control actuator connector.
Verify that the temperature control actuator operates to the warm position when connecting 12V to terminal 3 and grounding terminal 4.
Verify that the temperature control actuator operates to the cool position when connected in reverse.
[Driver's side]
1. - 2. - 3. Cool position 4. Warm position | 5. Sensor (+ 5V) 6. Feedback signal 7. Sensor ground |
[Passenger's side]
1. - 2. - 3. Warm position 4. Cool position | 5. Sensor ground 6. Feedback signal 7. Sensor (+ 5V) |
Connect the temperature control actuator connector.
Turn the ignition switch ON.
Check the voltage between the terminals.
Driver's side: 6 and 7
Passenger's side: 5 and 6
Specification
Door Position | Voltage (V) | Error Detecting |
Max. cooling | 0.3±0.15 | Low voltage : 0.1V or less High voltage : 4.9V or less |
Max. heating | 4.7±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 temperature control actuator and check for proper operation.
Replace the temperature control actuator if it is proved that there is a problem with it.
