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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Generators & Regulators >> Self Diagnostic System >> Diagnostic Trouble Code Definitions

Diagnostic Trouble Code Definitions

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DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC (1) Description
P0562  Low System Voltage
P0563  High System Voltage
P0615  Improper Voltage Level On The Output Circuit That Controls The Starter Relay
P0622  Out-Of-Range Duty Cycle Signal
P1637  Generator Turn-On Signal Circuit Voltage Out-Of-Range
P1638  Out-Of-Range Duty Cycle Signal
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.