Recommended Procedure
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Check for poor connections or loose fitting pins.
NOTE:
Incorrect measurements result if all glow plug connectors are not disconnected.
The glow plug monitor self-test is a KOER functional test of the glow plug system. The self-test is carried out on-demand with the engine running and the A/C off. The PCM activates the GPCM which monitors the glow plugs. The pedal may be used to increase the engine speed to increase voltage if needed. For fault detection, the self-test requires a fault present at the time of testing.
| Item | Part Number | Description |
|---|---|---|
| 1 | - | GPCM |
| 2 | - | Black connector |
| 3 | - | Green connector |
| 4 | - | Cylinder 5 glow plug |
| 5 | - | Cylinder 7 glow plug |
| 6 | - | Cylinder 1 glow plug |
| 7 | - | Cylinder 3 glow plug |
| 8 | - | Cylinder 6 glow plug |
| 9 | - | Cylinder 8 glow plug |
| 10 | - | Cylinder 2 glow plug |
| 11 | - | Cylinder 4 glow plug |
| 12 | - | VBAT |
| 13 | - | Glow plug enable (GPE) |
| 14 | - | Diagnostic communication |
| 15 | - | VPWR |