| CHECK FAN CONTROL SIGNAL. |
|
1) Turn the ignition switch to OFF. 2) Connect the blower motor and auto A/C control module. 3) Turn the ignition switch to ON. 4) Set the fan dial to 1st — 7th. 5) Use a tester to measure the voltage between the power transistor connector and chassis ground. Connector & terminal (B57) No. 2 (+) — Chassis ground (−): |
| QUESTION | |
|
Is approx. 10 V detected in 1st, and 1 V at 7th? | |
| Yes | No |
|
Replace the power transistor. |
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