On-Board Diagnostic (HVAC): Overview Mazda 6 GH

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1. Remove the glove compartment.
2. Short the DLC to the GND terminal using a jumper wire.
3. Expose the solar radiation sensor to natural sunlight. NOTE: If natural sunlight is not shone on the solar radiation sensor, the climate control unit determines a malfunction and indicates a diagnostic trouble code "02".
4. Turn the ignition switch to ON position.
5. Read DTCs from the flashing of the rear defroster indicator light on the climate control unit. Carry out DTC inspection. (Present and past failure, indication modes) When the system is normal, the rear defroster indicator light does not flash. If any of the diagnostic trouble codes are indicated, carry out troubleshooting according to the code.
6. After completion of repairs, erase all diagnostic trouble code(s) from memory. (See «ERASING PAST FAILURE MEMORY»(ref-288823-S01523802682008062500000) ).
7. Remove the jumper wire.

Output device operation check table

OUTPUT DEVICE OPERATION CHECK REFERENCE Step Operating device Operating conditions Monitor (1) Other device conditions 1 Blower motor speed 1 Air mix actuator operation - 50% Airflow mode actuator operation - VENT Air intake actuator operation - FRESH A/C compressor operation - ON 2 Air mix actuator operation 20.0 Blower motor speed - 2nd Airflow mode actuator operation - VENT Air intake actuator operation - FRESH A/C compressor operation - ON 20.5 21.0 20.5 3 Airflow mode actuator operation 3 Blower motor speed - 2nd Air mix actuator operation - 50% Air intake actuator operation - FRESH A/C compressor operation - ON 4 Air intake actuator operation 4 Blower motor speed - 2nd Air mix actuator operation - 0% Airflow mode actuator operation - VENT A/C compressor operation (1) Shown on the information display according to step

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