10d. Check the RPM Signal While Cranking: Purpose:
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
The purpose of this test is to verify the CMP and CKP sensors and circuits are functioning.
Scan Tool - Data List Monitoring
- The scan tool may reset below 9.5 volts.
- Select the parameters indicated from the scan tool parameter list and monitor while cranking the engine.
NOTE:
You may need to use an outside power source for the scan tool.
| Parameter | Specification | Measurement |
|---|---|---|
| RPMD | 100 RPM minimum |
D Low RPM may be caused by starting or charging system concerns. No RPM indicated while cranking may be a CKP fault.