Pinpoint Tests: Notes
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Do not make jumperconnections except as directed. Incorrect connections may damage the voltage regulator test terminals.
CAUTION:
Do not allow any metal object to come in contact with the generator housing and internal diode cooling fins.
NOTE:
While carrying out any pinpoint test, disregard any DTCs set while following any specific pinpoint test. After the completion of any test, make sure to clear all codes in the powertrain control module (PCM).
NOTE:
The dual generator I circuit/bulb circuit 4-way connector MUST be connected before disconnecting or connecting the battery. The PCM relearns its parameters every time it is disconnected and connected to power. Failure to follow this procedure causes the PCM to misinterpret the charging system as a single generator system, causing the loss of DTC capability and control.
NOTE:
All voltage measurements are referenced to the negative (-) battery post unless otherwise specified.