Grasp the harness close to the suspect injector harness connector. Measure resistance between suspect high side circuit on the IDM connector and battery positive post, then to other high side circuit. NA19 CHECK FOR INTERMITTENT SHORT TO POWER IN HIGH SIDE CIRCUIT REPAIR short to power on high side circuit. Measure resistance between the suspect high side circuit at IDM connector and battery positive post, then to other high side circuit.Īre both resistance readings greater than 10,000 ohms?įault may be intermittent. NA18 CHECK SHORT TO POWER IN HIGH SIDE CIRCUIT REPAIR short to ground between IDM and injector valve cover connector. Measure resistance between suspect high side circuit at IDM connector and battery negative post. NA17 CHECK SHORT TO GROUND IN HIGH SIDE CIRCUITĭisconnect both valve cover connectors on the bank with the code. Refer to injector illustration at beginning of this pinpoint test for proper pin location. Measure resistance between the suspect high side circuit at the IDM harness connector and battery negative post. The following table list the circuits to inspect while performing these pinpoint tests, based on the DTC retrieved during the KOEO test. NA16 DIAGNOSTIC TROUBLE CODES (DTCs) P1291 AND P1292ĭTCs P1291 and P1292 indicate a ground short or short to battery positive exists on the high side circuit between the IDM and the injectors. Wiggle and shake harness while working your way back to the IDM.ĭo resistance readings ever go above 5 ohms?
Refer to injector illustration at beginning of this pinpoint test for pin location. Measure resistance between suspect low side and high side circuit at the IDM connector. Measure resistance between suspect injector high side circuit on injector harness connector and IDM connector.įault may be intermittent. Measure resistance on injector low side circuit between valve cover connector and IDM. Measure resistance between low side circuit from adapter tool and injector connector. Measure resistance between high side circuit from adapter tool and injector connector. Measure resistance between the high side and low side on the injector.
#2002 ford f250 diesel 7.3 injector driver module locatio install
Install Glow Plug Injector Adapter 014-00935 or equivalent to valve cover gasket. Note: If all of the DTCs associated with an entire bank are retrieved, the high side circuit is most likely open.ĭisconnect injector valve cover connector. The following table lists the circuits to inspect while performing these pinpoint tests, based on the DTC retrieved during the KOEO On-Demand or Injector Electrical Self Tests. NA11 DIAGNOSTIC TROUBLE CODES (DTCs) P1271-P1278ĭTCs P1271-P1278 indicate a low side-to-high side open in the circuit between the IDM and the injector.
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