Logic Type

1. Remove the heater control unit.
2. Reconnect the connector.
3. Measure the voltage at the heater control Unit terminals as indicated below.
4. To inspect the continuity of terminal J, disconnect the heater control unit connector.
5. If not as specified, inspect the parts listed under "Inspection area" and the related wiring hamesses.
6. If the parts and wiring harnesses are OK but the system still does not work properly, replace the heater control unit.




Terminal Voltage List (reference)