DTC P1017: Injector 4 Low Current Performance Check the ''On Board Diagnostic (OBD) System Check''. Was the ''OBD System Check'' performed? YES – Go to step 2. NO – Go to OBD System Check. Check the DTC. Is there other DTC P1002 being output? YES – Go to step 3. NO – Go to step 8. Turn the ignition switch OFF. Disconnect the ECM B connector. Measure resistance between the injector 4 connector terminals. Is there 0.2 – 0.3 ohms (At room temperature: about 20°C (68°F))? YES – Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM. NO – Go to step 6. NOTICE The battery power supply short circuit to 5 V power supply damages the ECM. Remove the cylinder head cover insulator. Disconnect the injector 4 connector.

Check the injector 4 power supply and ground circuit for an open. Wire side of female terminals Injector 2P connector JUMPER WIRE Is a problem found? YES – Repair the injector ground circuit. NO – Go to step 9. Measure resistance between the injectors connector terminals No. 1 and No. 2. Is there about 0.2 – 0.3 ohms (At room temperature: about 20°C (68°F))? YES – Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM. NO – Replace applicable injector. NOTICE The battery power supply short circuit to 5 V power supply damages the ECM. aaa