Troubleshooting Hints
- If the engine is difficult to start when it is hot, check low for fuel pressure and injector leaks.
- If the injector does not operate when the engine is cranked, then check the following:
- Faulty power supply circuit to the ECM or faulty ground circuit.
- Faulty MFI control relay.
- Faulty crankshaft position sensor or camshaft position sensor.
- If engine idle remains unchanged when fuel injection to the cylinders is cut one after another, check for the following items about such cylinder:
- Injector and harness.
- Spark plug and high tension cable.
- Compression pressure.
- If the injection system is OK but the injector drive time is out of specification, check for the following items:
- Poor combustion in the cylinder (faulty spark plug, ignition coil, compression pressure, etc.)
- The MIL is on or the DTC is displayed on the HI-SCAN under the following condition.
- When the injector itself is faulty.