SEAT WARMER UNIT INSPECTION

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Warning

•  Handling a front seat equipped with 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 [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].) (See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM].)

Simple Inspection

1.  Place a cooling agent on the seat cushion (thermistor).

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2.  Operate the seat warmer switch to turn on the seat warmer.

3.  Touch the seat cushion and the seat back to verify a temperature increase.

4.  If a temperature increase cannot be verified, go to the resistance inspection. (See Resistance Inspection.)

Resistance Inspection

1.  Switch the ignition to off.

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

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

4.  If the resistance on the front passenger's side is inspected, disconnect the seat warmer control unit connector from the seat warmer control unit.

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5.  Disconnect the seat warmer control unit connectors (seat cushion-side, seat back-side).

6.  Verify that the resistance between seat warmer control unit connector terminals A and B is as indicated in the table.

―  If not as indicated in the table, replace the malfunctioning part. (See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION.) (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION.)