SCHEMATIC REFERENCE: Starting and Charging Schematics

Did you perform the Diagnostic System Check for starting and charging?

Go to Step 2

Go to Diagnostic System Check - Engine Electrical

Turn ON the ignition, with the engine OFF

Is the charge indicator lamp ON?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Install a scan tool.
2. With the scan tool observe the Generator Lamp parameter in the PCM data list.

Does the Generator Lamp parameter display ON.

Go to Step 6

Go to Step 4

1. Start the engine.
2. With the scan tool observe the Generator Lamp Circuit parameter in the PCM data list.

Does the Generator Lamp Circuit parameter display OK.

Go to Step 6

Go to Step 5

Test the control circuit of the indicator lamp for high resistance or open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 7

Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition

Go to Step 10

Go to Step 8

Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition

Go to Step 10

Go to Step 9

Replace the Powertrain Control Module (PCM). Refer to Powertrain Control Module Replacement/Programming in Engine Controls - 3.1 or Powertrain Control Module Replacement/Programming in Engine Controls - 3.8.

Did you complete the replacement?

Go to Step 10

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Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Did you complete the replacement?

Go to Step 10

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Operate the system for which the symptom occurred.

Did you correct the condition?

System OK

Go to Step 2