Mazda CX-5 Service & Repair Manual: Seat Warmer Unit Inspection

WARNING:

• Handling a side air bag improperly can accidentally operate (deploy) the air bag, which may seriously injure you. Read the service warnings/cautions in the Workshop Manual before handling the front seat (side air bag integrated)..

CAUTION:

• If the slide bar is operated after the front seat is removed, the left/right slide positions will deviate and the adjuster unit could be damaged after the front seat is installed. After removing a front seat, do not operate the slider lever.

• Verify that there are no malfunctions in the forward/back slide of the seat and in the adjuster unit after installing a front seat.

• When performing the procedure with a front seat removed from the vehicle, perform the procedure on a clean cloth so as not to damage or soil the seat.

• When the passenger's seat is removed, perform the seat weight sensor inspection using the M-MDS after installing the passenger's seat..

• When the passenger's seat is replaced with a new one, perform the seat weight sensor calibration using the M-MDS..

Driver-Side

Seat cushion side

1. Switch the ignition to off.

2. Disconnect the negative battery cable and wait 1 min. or more

..

3. Remove the front seat..

4. Inspect for continuity between the seat warmer unit connector terminal 5C—5D.

• If not as specified, replace the front seat cushion pad..

5. Measure the temperature around the thermostat.

NOTE:

• To make the temperature around the thermostat at the normal temperature, the seat warmer is left for 30 minutes or more while turned off.

6. Measure the resistance between the seat warmer unit connector terminal 5A—5B, records with the surrounding temperature of the thermostat measured beforehand.

7. Connect the negative battery cable.

8. Connect the seat warmer unit connector.

9. Switch the seat warmer switch to Lo position, and warm the seat warmer.

10. Measure the resistance between the seat warmer unit connector terminal 5A—5B, and report it.

11. Switch the seat warmer switch to High position, and warm the seat warmer.

12. Measure the resistance between the seat warmer unit connector terminal 5A—5B, it is confirmed that there is a change from the resistance recorded beforehand.

• If the change in resistance cannot be confirmed, replace the front seat cushion pad..

Seat back side

1. Switch the ignition to off.

2. Disconnect the negative battery cable and wait 1 min. or more

..

3. Remove the front seat..

4. Inspect for continuity between the seat warmer unit connector (short code) terminal A—B.

• If not as specified, replace the front seat back pad..

  

  
  

Passenger-Side

Seat cushion side

1. Switch the ignition to off.

2. Disconnect the negative battery cable and wait 1 min. or more

..

3. Remove the front seat..

4. Inspect for continuity between the seat warmer unit connector (short code) terminal G—H.

• If not as specified, replace the front seat cushion pad..

5. Measure the temperature around the thermostat.

NOTE:

• To make the temperature around the thermostat at the normal temperature, the seat warmer is left for 30 minutes or more while turned off.

6. Measure the resistance between the seat warmer unit connector terminal D—F, records with the surrounding temperature of the thermostat measured beforehand.

7. Connect the negative battery cable.

8. Connect the seat warmer unit connector.

9. Switch the seat warmer switch to Lo position, and warm the seat warmer.

10. Measure the resistance between the seat warmer unit connector terminal D—F, and report it.

11. Switch the seat warmer switch to High position, and warm the seat warmer.

12. Measure the resistance between the seat warmer unit connector terminal D—F, it is confirmed that there is a change from the resistance recorded beforehand.

• If the change in resistance cannot be confirmed, replace the front seat cushion pad..

Seat back side

1. Switch the ignition to off.

2. Disconnect the negative battery cable and wait 1 min. or more

..

3. Remove the front seat..

4. Inspect for continuity between the seat warmer unit connector (short code) terminal A—B.

• If not as specified, replace the front seat back pad..