ECS Resistance Tests
The ECS can be checked using an ohmmeter. Before making resistance tests, turn ignition off and disconnect wiring connectors at ECU. Insert ohmmeter probes into wiring connectors from wire side. Measure resistance at connector terminals, NOT ECU terminals.
TROUBLE CODES & PROBABLE CAUSE FOR CODES
| Code No. | Probable Cause |
|---|---|
| 2 & 3 | Air Flow Meter or Circuit, ECU. |
| 4 | Coolant Temp. Sensor or Circuit, ECU. |
| 5 | Oxygen Sensor or Circuit, ECU. |
| 6 | Ignition System Circuit, Distributor, Coil, Igniter, ECU. |
| 7 | Throttle Position Sensor or Circuit, ECU. |