1. Disconnect the generator connector.
2. Turn the ignition to ON with the engine OFF.
3. Connect a DMM between the generator connector terminal B and ground.

Is the battery voltage greater than the specified value?

0 V

Go to Step 2

Go to Step 3

Move the DMM from terminal B to the generator BAT terminal on the generator (red wire).

Is the voltage more than specified value?

0 V

Go to Step 4

Go to Step 5

Check for an open in CKT 225 between the generator terminal B and the powertrain control module (PCM).

Does an open exists?

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Go to Engine Controls Diagnostic System Check

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1. Connect the generator connector.
2. Run the engine at fast idle with all of the accessories OFF.
3. Connect a DMM across the battery terminals.

Is the reading within the specified value?

13.5-15.5V

Go to Step 6

Go to Step 7

Check for an open in CKT 2 (red) between the generator BAT terminal and the battery.

Is the repair complete?

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Recheck System Operation

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1. Load test the generator. Refer to generator Load Test.
2. Replace the generator if necessary. Refer to Generator Replacement Procedure.

Is generator OK?

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Go to Parasitic Load Test

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Repair or replace the generator. Refer to Generator Replacement Procedure.

Is the repair complete?

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Recheck System Operation

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