Test 13 - Fuel Injector Circuits (Code 33)
- Turn ignition switch on. Check that voltage is being applied to ECU connector terminal No. 21 and 22. If voltage is not present, disconnect fuel injector harnesses at connector.
- Check that voltage is present at connectors. If voltage is not present, check dropping resistor, main relay and ignition switch. Turn ignition switch off.
- Check continuity of injector circuit as indicated in table. If readings are incorrect, repair or replace faulty parts.
TESTING FUEL INJECTOR CIRCUIT
| Test Point | ECU Connector Terminal No. | Resistance (Ohms) |
|---|---|---|
| Injector A & B | 21 | 0 |
| Ground | 21 | Infinity |
| Injector C & D | 22 | 0 |
| Ground | 22 | Infinity |
NOTE:
If ECU connector terminal No. 21 is shorted, also check multi-drive monitor for short to ground.