Blower Power Transistor Test (Manual A/C)

Blower Power Transistor Test

Removal

1. Passenger's Dashboard Undercover





1. Gently pull down the passenger's dashboard undercover (A) to detach the clips (B), then pull away the undercover to release the pins (C) from the holder (D).

2. Glove Box





1. Remove the bolts (A).





2. Release both glove box stops (A) by pushing them in, then let the glove box (B) hang down.





3. Detach the glove box damper hook (A), then remove the glove box (B).

3. Glove Box Frame





1. Remove the glove box frame (A).

4. Passenger's Heater Duct





1. Remove the passenger's heater duct (A).

5. Power Transistor





1. Remove the power transistor (A).

6. Shift Lever Panel (AT)





1. Carefully pry out the shift lever panel (A) with the appropriate trim tool to detach the clips (B, C) and the hooks (D), then remove the shift lever panel.

7. Driver's Inner Dashboard Trim Panel





1. Carefully pry out the driver's inner dashboard trim panel (A) with the appropriate trim tool to detach the clips (B), then remove the driver's inner dashboard trim panel.

8. HVAC Control Unit Assembly





1. Remove the HVAC control unit assembly (A), then disconnect the connector (B).

Test

1. Power Transistor - Test





1. Measure the resistance between terminals No. 2 and No. 4 of the power transistor. It should be about 1.5 kOhms.

* If the resistance is within the specifications, go to step 3.
* If the resistance is not within the specifications, replace the power transistor.

NOTE: Also check the blower motor. Power transistor failure can be caused by a defective blower motor.

2. Reconnect the power transistor connector.





3. Connect HVAC control unit connector terminals No. 9 and No. 12 with a jumper wire.

4. Turn the ignition switch to ON (II).

5. Check that the blower motor runs.

* If the blower motor does not run, replace the power transistor.

NOTE: A faulty blower motor can cause the power transistor to fail. Before replacing the power transistor, check the blower motor for binding, and replace it if necessary.
* If the blower motor runs, the power transistor is OK.

Installation

1. HVAC Control Unit Assembly





1. Connect the connector (A), then install the HVAC control unit assembly (B).

2. Driver's Inner Dashboard Trim Panel





1. Install the driver's inner dashboard trim panel (A). Make sure the clips (B) snap into place securely.

3. Shift Lever Panel (AT)





1. Install the shift lever panel (A). Make sure the clips (B, C) and the hooks (D) snap into place securely.

4. Power Transistor





1. Install the power transistor (A).

5. Passenger's Heater Duct





1. Install the passenger's heater duct (A).

6. Glove Box Frame





1. Install the glove box frame (A).

7. Glove Box





1. Install the glove box (A), then install the glove box damper hook (B).





2. Install the bolts (A).

8. Passenger's Dashboard Undercover





1. Install the passenger's dashboard undercover (A). Make sure the clips (B) snap into place securely, and the pins (C) into the holder (D) securely.