Hummer H1 (2006+). Manual - part 48
OBD-36
On-Board Diagnostics
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ECM SCHEMATICS
See the following Figures for ECM Schematics on:
• Fuel Selector Valve (Figure OBD-4)
• Accelerator Position Pedal (Figure OBD-5)
• Fuel Injectors (Figure OBD-6)
• Glow Plug Control Module (Figure OBD-7)
• Diagnositc Link Connector (Figure OBD-8)
• EGR Solenoid (Figure OBD-9)
• Camshaft and Cranshaft Sensors (Figure OBD-10)
• Mass Air Flow/Air Intake Temperature Sensors (Figure OBD-11)
• Coolant Temperature, Fuel Temperature and Boost Sensors (Figure OBD-12)
• Oil Pressure Sensor (Figure OBD-13)
• Turbo Vane Postition Sensor (Figure OBD-14)
• Fuel Pressure Sensor (Figure OBD-15)
P2610
Engine Control Module Ignition Off Timer Performance
B
Yes
P2636
Fuel Transfer Pump Flow Insufficient
D
No
P2771
Four Wheel Drive (4WD) Low Switch Circuit
B
Yes
P2810
Solenoid G Electrical
B
Yes
U0073
High Speed CAN Communication Bus
B
Yes
U0100-
U0299
Lost Communication
B
Yes
Diagnostic Trouble Code (DTC) Identification (Continued)
DTC
Description
Type
Illuminate MIL