DTC Troubleshooting: P0301 (71), P0302 (72), P0303 (73), P0304 (74)
  1. Measure voltage between injector 2P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Go to Step 51 .
NO -
Repair open in the wire between the injector and PGM-FI main relay 1, then go to Step 60 .
  1. Turn the ignition switch OFF.