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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 561 (Battery & Charging System) >> Description And Operation >> I Circuit 904 (LG/RD)

I Circuit 904 (LG/RD)

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

The I (ignition) 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 will ground this circuit, which signals the PCM to send a message over the CAN communication link to the instrument cluster to cause the charging system warning indicator to illuminate.

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