Optima & Magentis (Canadian)
- Disconnect radiator cooling fan motor connector. Apply battery voltage across specified motor connector terminals. See Fig 1. See COOLING FAN MOTOR SPECIFICATIONS table.
- Check motor operation, ensure no abnormal noises or vibrations exist. Replace cooling fan and motor assembly if operation is not as specified.
COOLING FAN MOTOR SPECIFICATIONS
| Battery Positive Terminal | Battery Negative Terminal | Motor Speed |
|---|---|---|
| 1 | 3 | Slow |
| 1 & 2 | 4 | Medium |
| 1 & 2 | 3 & 4 | Fast |