7.3L Symptom-To-Diagnostic Flow Chart Menu
NOTE:
In the following table, the circuits referred to are found in the TESTS W/CODES
- DIESEL article in this section.
7.3L SYMPTOM-TO-DIAGNOSTIC FLOW CHART MENU
| Symptom | Circuit Test Step Number |
|---|---|
| Poor idle quality Rolling idle Shifts harshly Poor fuel economy | DJ1 |
| Overdrive Cancel Indicator (OCI) lite always off (E4OD only) | TC13 |
| Hard Start (cold) | ***** |
| Tachometer inoperative (Vehicle with Tachometer) | DJ1 |
| 4x4 Low Indicator Light Always Off (with harsh shift) (always on with sluggish shift) - E4OD only | TC11 |
| Tachometer indicates a low vehicle RPM | DJ1 |