REAR SEAT WARMER UNIT INSPECTION

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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


LH-side

Seat cushion side
1.  Switch the ignition to off.
2.  Disconnect the negative battery cable and wait 1 min. or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)
3.  Disconnect the LH-side seat warmer unit connector.
4.  Inspect for continuity between the LH-side seat warmer unit connector terminal A and B.
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―  If not as specified, replace the rear seat cushion pad. (See REAR SEAT CUSHION TRIM REMOVAL/INSTALLATION.)
5.  Measure the resistance between the LH-side seat warmer unit connector terminals C and D, and verify that the condition is as indicated in the table.
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•  If the thermistor characteristic is not as shown in the graph, replace the rear seat cushion pad. (See REAR SEAT CUSHION TRIM REMOVAL/INSTALLATION.)
Seat back side
•  Switch the ignition to off.
•  Disconnect the negative battery cable and wait 1 min. or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)
•  Disconnect the LH-side seat warmer unit connector.
•  Inspect for continuity between the LH-side seat warmer unit connector (short cord) terminal A and B.
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―  If not as specified, replace the rear seat back pad. (See REAR SEAT BACK TRIM REMOVAL/INSTALLATION.)
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RH-Side

Seat cushion side
1.  Switch the ignition to off.
2.  Disconnect the negative battery cable and wait 1 min. or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)
3.  Disconnect the RH-side seat warmer unit connector.
4.  Inspect for continuity between the RH-side seat warmer unit connector (short cord) terminal G and H.
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―  If not as specified, replace the rear seat cushion pad. (See REAR SEAT CUSHION TRIM REMOVAL/INSTALLATION.)
5.  Measure the resistance between the RH-side seat warmer unit connector terminals E and F, and verify that the condition is as indicated in the table.
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•  If the thermistor characteristic is not as shown in the graph, replace the rear seat cushion pad. (See REAR SEAT CUSHION TRIM REMOVAL/INSTALLATION.)
Seat back side
1.  Switch the ignition to off.
2.  Disconnect the negative battery cable and wait 1 min. or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)
3.  Disconnect the RH-side seat warmer unit connector.
4.  Inspect for continuity between the RH-side seat warmer unit connector (short cord) terminal A and B.
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―  If not as specified, replace the rear seat back pad. (See REAR SEAT BACK TRIM REMOVAL/INSTALLATION.)
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