SEAT WARMER UNIT INSPECTION

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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). (See AIR BAG SYSTEM SERVICE WARNINGS.) (See AIR BAG SYSTEM SERVICE CAUTIONS.)

Caution

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

•  Verify that there are no malfunctions in the sliding mechanism after installing a front seat.

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

Driver-Side

Seat cushion side

1.  Switch the ignition to off.

2.  Disconnect the negative battery terminal and wait 1 min. or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)

4.  Inspect for continuity between the seat warmer unit connector terminal 6A—6B.

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•  If not as specified, replace the front seat cushion pad. (See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION.)

5.  Measure the temperature around the thermostat.

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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 6C—6D, records with the surrounding temperature of the thermostat measured beforehand.

7.  Connect the negative battery terminal.

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 6C—6D, 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 6C—6D, 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. (See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION.)

Seat back side

1.  Switch the ignition to off.

2.  Disconnect the negative battery terminal and wait 1 min. or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)

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

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•  If not as specified, replace the front seat back pad. (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION.)

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Passenger-Side

Seat cushion side

1.  Switch the ignition to off.

2.  Disconnect the negative battery terminal and wait 1 min. or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)

4.  Inspect for continuity between the seat warmer control unit connector terminal N—B.

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•  If not as specified, replace the front seat cushion pad. (See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION.)

5.  Measure the temperature around the thermostat.

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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 control unit connector terminal D—F, records with the surrounding temperature of the thermostat measured beforehand.

7.  Connect the negative battery terminal.

8.  Connect the seat warmer control unit connector.

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

10.  Measure the resistance between the seat warmer control 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 control 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. (See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION.)

Seat back side

1.  Switch the ignition to off.

2.  Disconnect the negative battery terminal and wait 1 min. or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)

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

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•  If not as specified, replace the front seat back pad. (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION.)

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