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Power Transistor HVAC: Testing and Inspection

POWER TRANSISTOR (for Rear A/C)

INSPECTION
1. REMOVE REAR SEAT OUTER BELT FLOOR ANCHORS

2. REMOVE BACK DOOR SCUFF PLATE

3. REMOVE REAR DOOR SCUFF PLATE RH

4. REMOVE REAR WINDOW SIDE GARNISH

5. REMOVE REAR QUARTER TRIM PANEL RH




6. REMOVE REAR POWER TRANSISTOR
a. Disconnect the connector.
b. Remove the 2 screws and rear power transistor.




7. INSPECT POWER TRANSISTOR OPERATION
a. Connect the positive (+) lead to terminal 1 through a 12 V - 3.4 W test bulb and negative (-) lead to terminal 4.
b. Check the test bulb lights up when another positive (+) lead is connected to terminal 2 through a 12 V - 3.4 W test bulb.
If operation is not as specified, replace the power transistor.




8. INSPECT POWER TRANSISTOR RESISTANCE

Measure resistance between terminals 3 and 4.
Standard resistance: 2.0-2.4 kohms

If resistance is not as specified, replace the power transistor.

9. INSTALL REAR POWER TRANSISTOR
10. INSTALL REAR QUARTER TRIM PANEL RH

11. INSTALL REAR WINDOW SIDE GARNISH

12. INSTALL REAR DOOR SCUFF PLATE RH

13. INSTALL BACK DOOR SCUFF PLATE

14. INSTALL REAR SEAT OUTER BELT FLOOR ANCHORS
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