For a complete wiring diagram Refer to Section 8W.When Monitored:With the engine running.Set Condition:The ECM detects that the Generator output is not within specifications.Possible CausesGENERATOR BELTGENERATOR BELT TENSIONERGENERATOR B+ CIRCUIT OPENAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)1. CHECK FOR OTHER DTC'STurn the ignition on.With the scan tool, check the ECM for LIN Bus or System Voltage related DTC's.Are there any LIN Bus or System Voltage related DTCs?YesRepair other DTCs before continuing.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To22. GENERATOR B+ CIRCUITTurn the ignition off.Using a test light connected to ground, probe the B+ circuit at the generator.Does the test tight illuminate brightly?ContinueGo To 3 No Repair the Generator B+ circuit for an open.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. CHECK GENERATOR DRIVE BELTVisually inspect the generator drive belt for glazing, cracks and other problems.Inspect the generator drive belt and tensioner for proper tension.Were any problems found?YesRepair or replace as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo To 44. TEST DRIVE THE VEHICLETurn the ignition on.With the scan tool, erase DTC's.Test drive the vehicle.With the scan tool, read DTC's.Does the scan tool display this DTC?YesReplace the Generator.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)