Reference Number(s): 03-21-3, Date of Issue: October 6, 2003 FORD: 1994-1997 F SUPER DUTY, F-250, F-350; 1997 ECONOLINE Superceded Bulletin(s): 95-6-13, Date of Issue: March 27, 1995 NOTE: Article 95-6-13 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet. Driveability – Reduced Power – No Start – 7.3L D.I. Turbo – IDM Module – No Diagnostic Trouble Codes

ISSUE: A “no-start” or “reduced power” condition may occur intermittently on some vehicles. This may be caused by a short in the injector circuits or the IDM module. ACTION: Follow the diagnostics listed in the Diagnostic Guide and refer to the following Service Procedure. SERVICE PROCEDURE If, after completion of all the steps in the Power Stroke 7.3L (DI Turbo) Diesel Diagnostic Guide, you are unable to pinpoint the cause of the concern, proceed with the following steps. Disconnect the IDM Module connector and using a DVOM, measure the resistance between the injector circuits to ground. If it is less than 5 ohms resistance, repair the short in the circuit and retest. If the concern still exists, replace the IDM module. PARTS INFORMATION Part Number Part Name F7TZ-12B599-AC IDM Module

1994-1997 Ford 7.3 L DIT Powerstroke | Reduced Power

Description

Reference Number(s): 03-21-3, Date of Issue: October 6, 2003

FORD: 1994-1997 F SUPER DUTY, F-250, F-350; 1997 ECONOLINE
Superceded Bulletin(s): 95-6-13, Date of Issue: March 27, 1995

NOTE: Article 95-6-13 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet.

Driveability – Reduced Power – No Start – 7.3L D.I. Turbo – IDM Module – No Diagnostic Trouble Codes

ISSUE: A “no-start” or “reduced power” condition may occur intermittently on some vehicles. This may be caused by a short in the injector circuits or the IDM module.
ACTION: Follow the diagnostics listed in the Diagnostic Guide and refer to the following Service Procedure.

SERVICE PROCEDURE

If, after completion of all the steps in the Power Stroke 7.3L (DI Turbo) Diesel Diagnostic Guide, you are unable to pinpoint the cause of the concern, proceed with the following steps.
Disconnect the IDM Module connector and using a DVOM, measure the resistance between the injector circuits to ground. If it is less than 5 ohms resistance, repair the short in the circuit and retest.
If the concern still exists, replace the IDM module.

PARTS INFORMATION

Part Number Part Name
F7TZ-12B599-AC IDM Module

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