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C2 - Underhood Fuseblock 2003
Pin Wire Color Circuit No. Function
A1 -- -- Not Used
A2      
A3 DK GRN 59 A/C Compressor Clutch Supply Voltage
A4 -- -- Not Used
A5 ORN 4340 Battery Positive Voltage (C42)
A6 -- -- Not Used
A7 DK GRN/WHT 465 Fuel Pump Relay Control-Primary
A8 ORN 440 Battery Positive Voltage (M74)
A9 PNK 1339 Ignition 1 Voltage (L18)
A10 LT BLU 1320 CHMSL Supply Voltage/Stop Lamp Supply Voltage (KUP)
A11 GRY 1524 Trailer Backup Lamp Supply Voltage (LB7)
GRY 1524 Trailer Backup Lamp Supply Voltage
A12 PNK 439 Ignition 1 Voltage
PNK 439 Ignition 1 Voltage (LB7)
B1 -- -- Not Used
B2 ORN 3440 Battery Positive Voltage (L18/PTO)
B3 BLK/WHT 1695 Axle Switch Signal (4WD)
BLK/WHT 1695 Axle Switch Signal (4WD)
B4 -- -- Not Used
B5      
B6      
B7 BLK 550 Ground
B8 ORN 440 Battery Positive Voltage-ECM
ORN 440 Battery Positive Voltage-ECM
B9 PNK 1039 Ignition 1 Voltage
B10 PNK 439 Ignition 1 Voltage-IAT/MAF Sensor
PNK 439 Ignition 1 Voltage-PCM
B11 -- -- Not Used
B12      
C1 -- -- Not Used
C2      
C3 DK GRN/WHT 459 A/C Compressor Clutch Relay Control
C4 -- -- Not Used
C5      
C6      
C7      
C8      
C9      
C10 PNK 1039 Ignition 1 Voltage (Except 4.3L)
PNK 1039 Ignition 1 Voltage
C11 -- -- Not Used
C12 PPL 420 TCC Brake Switch/Cruise Control Release Signal
D1 -- -- Not Used
D2      
D3 LT GRN 275 Park Neutral Position Switch Park Signal
D4 -- -- Not Used
D5      
D6      
D7      
D8 PNK 539 Ignition 1 Voltage-HO2S Bank 1 Sensor 1
PNK 539 Ignition 1 Voltage-HO2S Bank 2 Sensor 1
     
     
D9 PNK 1239 Ignition 1 Voltage
     
     
D10 PNK 1039 Ignition 1 Voltage
PNK 1039 Ignition 1 Voltage
D11 PPL 6 Starter Solenoid Crank Voltage
D12 YEL/BLK 625 Starter Enable Relay Control
E1 -- -- Not Used
E2      
E3      
E4      
E5      
E6 PNK 1239 Ignition 1 Voltage-Fuel Injector 2
PNK 1239 Ignition 1 Voltage-Fuel Injector 4
     
E7 PNK 1539 Ignition 1 Voltage-HO2S-Bank 1 Sensor 2
PNK 1539 Ignition 1 Voltage-HO2S-Bank 2 Sensor 2
     
     
E8 -- -- Not Used
E9      
E10 PNK 1239 Ignition 1 Voltage (Except 4.3L)
PNK 1239 Ignition 1 Voltage
E11 PNK 1020 Off/Run/Crank Voltage (All Automatic Transmissions Except M74)
PNK 1020 Off/Run/Crank Voltage
E12 -- -- Not Used
F1 -- -- Not Used
F2      
F3 PPL 806 Crank Voltage
F4 -- -- Not Used
F5      
F6      
F7      
F8 PNK 839 Ignition 1 Voltage
F9 PNK 639 Ignition 1 Voltage
F10 PNK 1020 Ignition 0 Voltage (M74)
PNK 1020 Ignition 0 Voltage (M74)
F11 DK GRN 1433 Park/Neutral Start Switch Signal
F12 -- -- Not Used
C100 - I/P Harness to Engine Harness
Pin Wire Color Circuit No. Function
A DK BLU 84 Cruise Control Set/Coast Switch Signal (w/ETC)
LT BLU/BLK 396 Cruise Control Engaged Signal (w/o ETC)
B GRY 48 CPP Switch Signal (M/T)
C BRN 241 Ignition 3 Voltage
D DK GRN/WHT 817 Vehicle Speed Signal
E DK BLU 507 Wait to Start Indicator Control (LB7)
F -- -- Not Used
G BRN/WHT 419 MIL Control
H DK GRN 1049 PCM Class 2 Serial Data
J BLK/WHT 5668 Engine ON Signal (w/SBA)
K WHT 121 Engine Speed Signal
L GRY 397 Cruise Control ON Switch Signal (w/ETC)
M YEL 710 Class 2 Serial Data
N BRN 241 Ignition 3 Voltage
P DK BLU 204 A/C Low Pressure Sensor Signal
R YEL 2470 Class 2 Serial Data (w/M74)
S GRY/BLK 87 Cruise Control Resume/Accel Switch Signal
C152 - Chassis Harness to Engine Harness
Pin Wire Color Circuit No. Function
A -- -- Not Used
B TAN 1465 Fuel Pump Relay Control - Secondary-Dual Fuel Tanks
C GRY 474 5 Volt Reference
D DK GRN 890 Fuel Tank Pressure Sensor Signal
E YEL/BLK 1827 Vehicle Speed Signal
F WHT 1310 EVAP Canister Vent Solenoid Control
G -- -- Not Used
H DK BLU 1936 Fuel Level Sensor Signal - Secondary-Dual Fuel Tanks
J BLK 470 Low Reference
K PPL 1589 Fuel Level Sensor Signal - Primary
L TAN/BLK 464 Delivered Torque Signal-w/ Traction Control
M ORN/BLK 463 Requested Torque Signal (NW7)
C153 - 4 Wheel Drive Harness to Engine Harness (NP8/NR4)
Pin Wire Color Circuit No. Function
A GRY/BLK 1694 4WD Low Signal
B -- -- Not Used
C BRN 241 Ignition 3 Voltage