Ecu Code 33 - Fuel Injector Circuit
- Check voltage in fuel injector circuit. Disconnect harness connector at ECU. Turn ignition on and check for battery voltage at harness pins No. 1, 2, 3 and 8 (No. 6 and 7 on Pickup and Trooper (II).
- If battery voltage is not present at terminals, disconnect fuel injector harnesses and check for battery voltage at either terminal. If battery is not present replace dropping resistor, main relay or ignition switch. Clear code. Start engine and run for 2 minutes. Access trouble codes to ensure fault is corrected.