Rear Blower Power Transistor Test

Rear Blower Power Transistor Test

SRS components are located in this area. Review the SRS component locations Locations and the precautions and procedures Service Precautions before doing repairs or service.

1. Remove the right rear side trim panel Interior Trim Removal/Installation - Rear Side Area.

2. Disconnect the 4P connector from the rear power transistor.

3. Measure the resistance between terminals No. 3 and No. 4 of the rear power transistor. It should be about 1.5 kOhms.

- If the resistance is within the specifications, go to step 4.
- If the resistance is not within the specifications, replace the rear power transistor.
NOTE: Also check the rear blower motor. Rear power transistor failure can be caused by a defective rear blower motor.





4. Reconnect the 4P connector to the rear power transistor.

5. Disconnect rear A/C control unit connector B (5P).

6. Connect rear A/C control unit connector B (5P) terminals No. 2 and No. 4 with a jumper wire.





7. Turn the ignition switch to ON (II), and check that the rear blower motor runs at high speed.

- If the rear blower motor does not run, replace the rear power transistor.
NOTE: A faulty rear blower motor can cause the rear power transistor to fail. If the rear power transistor is replaced, also check the rear blower motor for binding, and replace it if necessary.
- If the rear blower motor runs, the rear power transistor is OK.