13B Fuel Control Circuit to Power Module

1. Connect a diagnostic readout box to engine harness connector, then remove air cleaner.
2. Turn ignition switch Off, then disconnect 60-way connector from ECM.
3. Connect injector connector, turn ignition switch to Run position and press ATM button.
4. If fuel sprays from injector, power board is defective. Replace ECM.
5. If fuel does not spray from injector, logic board is defective. Replace ECM.
NOTE: Before replacing the engine control module check for excessive fuel pressure.