Circuit Testing
- Reconnect harness to coolant temperature sensor. Unplug ECU connectors at ECU. Check continuity of circuit as indicated in table. If readings are incorrect, repair or replace harness.
TESTING COOLANT TEMPERATURE SENSOR CIRCUIT
| Trouble Code | ECU Connector Terminal No. | Test Point | Resistance (Ohms) |
|---|---|---|---|
| 14 | 8 | B | Infinity |
| 14 | 8 | Ground | Infinity |
| 15 or 16 | 8 | GY | 0 |
| 15 or 16 | 6 | B | 0 |
| 15 or 16 | 6 | Ground | Infinity |