Did you perform the Charging System Check ?

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Go to Step 2

Go to Charging System Check

1. Connect a scan tool to the data link connector (DLC).
2. Turn the ignition switch to RUN.
3. Start the engine.
4. Using the scan tool, monitor system voltage.

Is the measured voltage in the specified range?

Greater than 13V

Go to Step 3

Go to Battery Is Undercharged or Overcharged

1. Turn the ignition switch to OFF.
2. Turn the ignition switch to RUN.

Did the charge indicator turn on, then turn off after the normal bulb check?

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Go to Step 6

Go to Step 4

1. Turn the ignition switch to LOCK.
2. Disconnect the powertrain control module (PCM) connector C2.
3. Turn the ignition switch to RUN.

Did the charge indicator remain on after the normal bulb check?

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Go to Step 5

Go to Step 7

Service the instrument cluster. Refer to Volt Gage Inaccurate or Inoperative in Instrument Panel, Gauges and Console.

Is the repair complete?

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Go to Step 11

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Check CKT 225 (RED) for an open or short to ground.

Is the circuit OK?

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Go to Step 8

Go to Step 7

Repair the open or short to ground on CKT 225 (RED).

Is the repair complete?

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Go to Step 11

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Check CKT 23 (GRY) for an open or short to ground.

Is the circuit OK?

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Go to Step 10

Go to Step 9

Repair the open or short to ground on CKT 23 (GRY).

Is the repair completed?

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Go to Step 11

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1. Check PCM connector C2 for poor terminal contact.
2. If OK, replace the PCM. Refer to Powertrain Control Module Replacement/Programming in Engine Controls -- 3.8L.

Is the replacement complete?

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Go to Step 11

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1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
2. Repeat the system check. Refer to Charging System Check .

Is the system check complete?

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System OK

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