Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Engine Controls Schematics - RPO LGH



ENGINE CONTROLS SCHEMATICS
(Vehicles With VIN L, RPO LGH Only)

Module Power, Ground, Serial Data, and MIL







5V1 and Low Reference Bus (1 of 3)







5V2, 5V3, and 5V4, and Low Reference Bus (2 of 3)







Low Reference Bus (3 of 3)







Intake Air Valve, MAF, and Temperature







Engine Data Sensors - Pressure and WIF







Engine Data Sensors - EGR and Turbocharger Controls







Engine Data Sensors - Pedal Position and Injector Timing







Engine Data Sensors - Glow Plug Controls and Intake Air Heater







Engine Data Sensors - Nitrogen Oxides and Reductant Sensor Module







Fuel Controls - Fuel Pump, Temperature, and Pressure Controls







Fuel Controls - Fuel Injectors







Emissions Controls - Reductant System







Controlled/Monitored Subsystem References







NOTE: VIN L, RPO LGH, Diesel, 8 Cylinder, 6.6L, DI, V8, Turbo, Duramax