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Auxiliary Cabin Heater: Service and Repair

REMOVAL

WARNING:
- REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.
- ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE NEGATIVE BATTERY (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.

NOTE: PTC heater shown removed from distribution housing for clarity.




1. . Disconnect and isolate the negative battery cable.
2. Remove the instrument panel.

NOTE: To disconnect the wire harness connector from the heater unit, pull upward on the connector lock while pulling the connector away from the heater unit.

3. Disengage the wire connector lock (1) and disconnect the wire harness connector (2) from the positive temperature coefficient (PTC) heater unit (3).




NOTE: LHD model shown. RHD model similar.

4. Remove the two screws (1) that secure the PTC heater unit (2) to the driver side of the HVAC air distribution housing (3).
5. Carefully remove the PTC heater unit from the air distribution housing by pulling it straight out of the housing.

INSTALLATION

NOTE: LHD model shown. RHD model similar.




1. Carefully install the positive temperature coefficient (PTC) heater unit (2) into the driver side of the HVAC air distribution housing (3). Make sure to engage the top end of the heater unit to the plastic molded pin located inside of the air distribution housing, on the passenger side of the housing.
2. Install the two screws (1) that secure the PTC heater unit to the air distribution housing. Tighten the screws to 2 N.m (17 in. lbs.).

NOTE: PTC heater shown removed from distribution housing for clarity.




3. Connect the wire harness connector (1) to the PTC heater unit (2) while pulling downward on the connector lock (3). Make sure the wire harness connector and lock are fully engaged.
4. Install the instrument panel.
5. Reconnect the negative battery cable.
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