Repair Procedures: Inspection
- Turn the ignition switch ON.
- Manually operate the control switch and measure the voltage of the blower motor.
- Select the control switch to raise the voltage until high speed.
| Segment | Manual Blower Voltage (V) | |
|---|---|---|
| A/C ON | A/C OFF | |
| 1 | 3.8 | 3.4 |
| 2 | 4.5 | 4.5 |
| 3 | 5.8 | 5.8 |
| 4 | 7.0 | 7.0 |
| 5 | 8.6 | 8.6 |
| 6 | 9.8 | 9.8 |
| 7 | 11.3 | 11.3 |
| 8 | Battery (+) | |
- If the measured voltage is not within specification, substitute with a known-good field effect transistor and check for proper operation.
- Replace the field effect transistor if it is proved that there is a problem with it.