- If the resistance is not as specified, replace the fuel injector.
- If resistance is within tolerance, check fuel pressure (see above).
If the fuel pressure is within specification, check the following:
- Is there a short, open, or loose connection on the BLACK/YELLOW wire between the PGM-FI main relay and the connector.
- Is there a break or rust in the connector.
- Is there a short, open, or loose connection on the BLACK/YELLOW wire between connector and fuel injector.
- Is there a short, open, or loose connection in the wire between the fuel injector and the ECM/PCM.
If all is well, check the ECM/PCM.