Ground Circuits
Turn ignition switch to OFF position. Locate and disconnect PCM 104-pin connector. See POWERTRAIN CONTROL MODULE LOCATION table. Check continuity between chassis ground and specified PCM connector terminals. See IDENTIFYING POWERTRAIN CONTROL MODULE GROUND TERMINALS table. See Figure. If continuity does not exist, repair open in affected ground circuit. If continuity exists, see POWER CIRCUITS .
POWERTRAIN CONTROL MODULE LOCATION
| Application | Location |
|---|---|
| F150 Pickup | Right Rear Of Engine Compartment |
| Crown Victoria, Econoline & F350 Super Duty Pickup | Left Rear Of Engine Compartment |
IDENTIFYING POWERTRAIN CONTROL MODULE GROUND TERMINALS
| Application | PCM Ground Terminal No. |
|---|---|
| Crown Victoria (4.6L) | 3, 25, 51, 77 & 103 |
| Econoline (6.8L) | 3, 23, 24, 25, 51, 76, 77 & 103 |
| F150 Pickup (5.4L) | 3, 25, 51, 76 & 103 |
| F350 Super Duty Pickup (6.8L) | 3, 23, 24, 25, 51, 76, 77 & 103 |