Ignition "OFF"
Disconnect the connector of temperature control actuator.
Verify that the temperature control actuator operates to the hot position when connecting 12V to the terminal 3 and grounding terminal 4.
Verify that the temperature control actuator operates to the cool position when connecting in the reverse.
1. - 2. - 3. Cool position | 4. Hot position 5. 5V (Vcc) 6. Feedback signal 7. Sensor ground |
Check the voltage between terminals 6 and 7(Drive).
Door position | Voltage(6-7) | Error detecting |
Max. cooling | 0.45 ± 0.15V | Low voltage :0.1V or less |
Max. heating | 4.55 ± 0.15V | High voltage :4.9V or more |
Disconnect the negative (-) battery terminal.
Remove the heater & blower unit assembly.
(Refer to HA group - "Heater Unit")
Disconnect the heater from blower unit.
Loosen the mounting screws and then remove the temperature control actuator (A).
Installation is the reverse order of removal.
