POWER TRANSISTOR INSPECTION


BHE074061015W04

1. Verify that the continuity between the power transistor terminals is as indicated in the table.

• If there is any malfunction, replace the power transistor.
• If the blower motor operation is not nomal even though no malfunction can be verified, inspect the A/C amplifier. (See A/C AMPLIFIER INSPECTION [FULL-AUTO AIR CONDITIONER].)

Tester lead

Resistance (kilohm)

+

-

A
B
A
C
11.0
A
D
B
A
Continuity detected
B
C
Continuity detected
B
D
1.5
C
A
11.0
C
B
C
D
D
A
Continuity detected
D
B
1.5
D
C
Continuity detected