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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