LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1184 (Charging System - General Information) >> Diagnosis And Testing >> Charging System >> Principles of Operation >> I Circuit 904 (LG/RD)

I Circuit 904 (LG/RD)

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

The I circuit 904 (LG/RD) is used to turn on the voltage regulator. This circuit is powered by the PCM after the engine is started. This circuit is also used by the PCM to determine whether or not to send a message over the CAN communication link to the instrument cluster to turn the charging system warning indicator on if there is a fault in the charging system operation. If there is a fault in the charging system operation, the regulator grounds the I circuit, the PCM senses a voltage drop on the I circuit and sends a message over the CAN communication link to the instrument cluster to cause the charging system warning indicator to illuminate.

scientia non olet · About LEMON Manuals