2008 trailblazer ECM connections
PIN FUNCTION COLOR NOTES 1 CRANK VOLT PPL TO STARTING/CHARGING SYS 2 TCC BRAKE SW PPL ANTI LOCK BRAKE SYS 3 4 4WD LO SIG GRY/BLK TRANSMISSION SYSTEMS 5 6 7 CHMSL CTRL LT BLU CRUISE CONTROL SYSTEMS 8 9 LO REF BLK FUEL TANK PRESSURE/FUEL PUMP AND SENDER ASSEMBLY 10 11 12 MIL CTRL BRN/WHT TO INSTRUMENT CLUSTER MIL 13 FUEL PMP RLY CRTL DKGRN/WHT 14 15 16 CLASS 2 SER DATA DKGRN COMPUTER DATA LINES SYS 17 18 IGN VOLT PNK IGN D FUSE (REAR FUSE BLOCK) 19 IGN VOLT PNK ECM 1 FUSE (UNDERHOOD FUSE CENTER) 20 BATT POS VOLT ORG ECM FUSE (UNDERHOOD FUEE CENTER 21 ACCEL SW SIG GRY/BLK CRUISE CONTROL SYSTEM 22 CRUISE CTRL SET DK BLU CRUISE CONTROL SYSTEM 23 24 25 ENG SPD SIG WHT INSTRUMENT CLUSTER 26 27 28 29 30 CRUISE ON SW SIG GRY CRUISE CONTROL SYSTEM 31 32 33 5V REF WHT/BLK ACCELERATOR POSTITION SENSOR 34 5V REF GRY FUEL TANK PRESSURE SENSOR 35 5V REF GRY ACCELERATOR POSTITION SENSOR 36 LO REF BRN ACCELERATOR POSTITION SENSOR 37 LO REF PPL ACCELERATOR POSTITION SENSOR 38 39 VEHICLE SPD SIG DK GRN/WHT INSTRUMENT CLUSTER 40 PWETRAIN RLY CTRL YEL POWERTRAIN RELAY 41 42 43 44 FUEL LVL SENS SIG PPL FUEL TANK PRESSURE/FUEL PUMP AND SENDER ASSEMBLY 45 46 47 APP SENS 1 SIG DK BLU ACCELERATOR POSTITION SENSOR 48 FUEL TANK SENS DKGRN FUEL TANK PRESSURE SENSOR 49 APP SENS 2 SIG ACCELERATOR POSTITION SENSOR 50 51 AIR INJECTION CTRL PNK/BLK AIR SOL RELAY 52 53 A/C CLUTCH RLY DK GRN/WHT AIR CONDITIONING SYSTEM 54 55 EVAP SOL CTRL WHT EVAP CANISTER VENT 56 STARTER RLY CTRL YEL/BLK STARTING/CHARGING SYS
PIN FUNCTION COLOR NOTES 1 IC 1 CTRL PPL IGN COIL 1 PIN B 2 HO2S LO SIG TAN PIN A HO2S 1 3 HO2S HI SIG PPL/WHT PIN B HO2S 2 4 HO2S HI SIG PPL/WHT PIN B HO2S 1 5 HO2S LO SIG TAN/WHT PIN A HO2S 2 6 KS 2 SIG LT BLU PIN A KNOCK SENSOR 2 7 KS 2 SIG GRY PIN B KNOCK SENSOR 2 8 KS 1 SIG DK BLU PIN A KNOCK SENSOR 1 9 KS 1 SIG GRY PIN B KNOCK SENSOR 1 10 11 TAC MOTOR CTRL 1 YEL THROTTLE BODY PIN B 12 TAC MOTOR CTRL 2 BRN THROTTLE BODY PIN A 13 IGN VOLT PNK 14 CAMSHAFT JI CTRL BRN PIN A CAMSHAFT ACTUATOR SOLENIOD ASSEMBLY 15 16 17 IC 5 CTRL DK GRN IGN COIL 5 PIN B 18 19 20 21 22 23 LO REF PNK/BLK CAMSHAFT POSITION SENSOR PIN B 24 LO OIL PRES SW SIG PPL OIL PRESSURE SWITCH PIN B 25 26 27 LO REF BLK CRANKSHAFT POSITION SENSOR PIN B 28 29 LO REF BLK/WHT THROTTLE BODY PIN C 30 31 32 FUEL INJ 6 CTRL YEL/BLK 33 IC 3 CTRL LT BLU IGN COIL 3 PIN B 34 IC 4 CTRL DK GRN/WHT IGN COIL 4 PIN B 35 36 37 38 39 12V REF RED CAMSHAFT POSITION SENSOR PIN A 40 41 42 LO REF BLK MAF SENSOR PIN D 43 STARTER RLY CTRL DK BLU 44 5V REF GRY THROTTLE BODY PIN E 45 46 LO REF BLK PIN B CAMSHAFT ACTUATOR SOLENIOD ASSEMBLY 47 48 FUEL INJ 6 CTRL BLK/WHT 49 FUEL INJ 4 CTRL LT BLU/BLK 50 51 52 FUEL INJ 2 CTRL LT GRN/BLK 53 IC 6 CTRL LT BLU/WHT IGN COIL 6 PIN B 54 IC 2 CTRL RED/WHT IGN COIL 2 PIN B 55 56 57 58 59 CMP SENS SIG BLK PIN C CAMSHAFT POSITION SENSOR 6O 61 62 IAT SENS SIG TAN MAF SENSOR PIN E 63 CKP SENS SIG BRN/WHT PIN C CRANKSHAFT POSITION SENSOR 64 TP SENS 1 SIG DK GRN THROTTLE BODY PIN D 65 66 TP SENS 2 SIG PPL THROTTLE BODY PIN F 67 MAF SENS SIG YEL MAF SENSOR PIN A 68 HO2S HTR LO CTRL DK GRN PIN E HO2S 1 69 HO2S HTR LO CTRL BLK/WHT PIN E HO2S 2 70 71 FUEL INJ 3 CTRL PNK/BLK 72 FUEL INJ 1 CRTL BLK 73 GND BLK
PIN FUNCTION COLOR 1 2 3 4 5 6 7 GEN REGU CTRL PPL STARTING/CHARGING SYS 8 9 AIR PUMP RLY CTRL BRN SECONDARY A.I.R. PUMP RELAY 10 11 12 DELIVERED TORQ SIG TAN/BLK 13 14 15 16 17 REQUEST TORQ SIG ORG/BLK 18 19 20 21 LO REF BRN A/C SYS 22 23 LO REF ORG/BLK MAP SENSOR PIN 2 24 25 26 AIR INJECTION CTRL DK BLU/WHT SECONDARY A.I.R. PUMP RELAY PIN 1 27 28 29 30 31 32 33 HISPD DATA BUS- TAN 34 35 LO REF BLK ECT SENSOR PIN A 36 37 5V REF GRY A/C SYS 38 39 5V REF GRY MAP SENSOR PIN 1 40 41 42 AIR INJECTION CTRL BRN/WHT SECONDARY A.I.R. PUMP RELAY PIN 3 43 44 45 46 47 PNP SW SIG ORG/BLK STARTING/CHARGING SYS 48 EVAP CANISTER CTRL DK GRN/WHT PIN B EVAP CANISTER PURGE SOLENIOD 49 50 51 52 53 HI SPD DATA BUS+ 54 55 ECT SENS SIG YEL ECT SENSOR PIN B 56 57 A/C PRESS SENS RED/BLK A/C SYS 58 59 MAP SENS SIG LT GRN MAP SENSOR PIN3 6O 61 62 SEC AIR INJ SENS YEL SECONDARY A.I.R. PUMP RELAY PIN 2 63 64 65 OIL PRESS SW SIG TAN/BLK ENGINE OIL PRESSURE SWITCH PIN A 66 FRONT SIG HIGH TRANSMIISSIONS SYS 67 68 69 70 71 72 73
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X1 A 1 X1 A 2 NOT USED X1 A 3 X1 A 4 X1 A 5 PNK 22 PNP SW PIN 12 X1 A 6 PPL 17 ECM IGN SWTCH INPT X1 A 7 ORG/BLK JUMP-F2X3 ECM PIN 17X3 X1 A 8 PPL 34 STARTER PIN A X1 A 9 GRY JUMP-B4X3 FROM PNP SWITCH PIN10 “HOT” X1 A 10 YEL JNCT-F10D8X1 PNP SW PIN 1 X1 A 11 PNK 26 MAF PIN C/EVAP CAN PURGE X1 B 1 ORG 29 ECM PIN 20 X1 X1 B 2 X1 B 3 X1 B 4 X1 B 5 PNK 27 PNP SWTCH X1 B 6 LT GRN N/A PNP SWTCH X1 B 7 X1 B 8 DKGRN/WHT N/A ECM PIN 13X1 X1 B 9 WHT JUMP-F4X3 ECM PIN 55X1 X1 B 10 TAN/BLK JUMP-D5X3 ECM PIN 12X3 X1 B 11 ORG 20 TCM X1 C 1 ORG 48 GEN BAT CRTL MOD PIN A+C X1 C 2 PNK 53 TCM/TRANS CONN E X175 X1 C 3 X1 C 4 X1 C 5 PNK 28 IGN COIL 1+2/ECM PIN 19 X1 C 6 X1 C 7 X1 C 8 X1 C 9 X1 C 10 X1 C 11 PNK 56 IGN COIL POWER X1 D 1 YEL POWERTRAIN RLY CTRL ECM PIN 40X1 X1 D 2 X1 D 3 BLK JNCT-F3X1 A/C COMP CLUTCH/2ND AIR SOLENOID X1 D 4 X1 D 5 PNK 28 IGN COIL 3+4 X1 D 6 X1 D 7 X1 D 8 YEL/BLK JMP-A10X1 ECM PIN 56X1 X1 D 9 DK GRN/WHT 22 ECM PIN 53X3 X1 D 10 X1 D 11 DK GRN 30 A/C COMP CLUTCH X1 D 12 PNK/BLK 54 ECM PIN 51X1 X1 E 1 PNK 23 ECM PIN 13 X1 E 2 X1 E 3 X1 E 4 X1 E 5 PNK 28 IGN COIL 5+6 X1 E 6 BLK JUMP-E7X1 BLOCK GROUND/TCM PIN49/ECM/GEN BAT CTRL MOD G-108 X1 E 7 BLK JUMP-E6X1 PNP SWITCH PIN 7/MAF-IAT SENS PIN B X1 E 8 X1 E 9 X1 E 10 X1 E 11 X1 E 12 PPL 54 2ND AIR RLY PIN 5 X1 F 1 X1 F 2 X1 F 3 BLK JUMP-C5X4 ENGINE BLOCK GROUND/FUEL PUMP RLY GROUND X1 F 4 X1 F 5 PNK 28 INJECTORS/ ECM PIN 19 X1 X1 F 6 X1 F 7 X1 F 8 X1 F 9 PNK 54 HO2S PIN D (DS O2) X1 F 10 PNK 55 HO2S PIN D X1 F 11 PNK 31 FUEL INJECTOR POWER
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X2 A 1 X2 A 2 X2 A 3 ORG JUMP-B4X4 TURN SIG SW PIN D X2 A 4 X2 A 5 X2 A 6 X2 A 7 X2 A 8 X2 A 9 X2 A 10 YEL 51 TURN SIG HAZ FLSH MOD PIN C X2 A 11 ORG 8 TCASE X2 A 12 ORG 9 WIPER MOTOR PIN J X2 B 1 X2 B 2 X2 B 3 PNK/WHT LOW BEAM HEADLIGHT RLY CRTL X2 B 4 X2 B 5 PNK 22 INST CLUST/STP LMP SW/TRN SIG SW/HLP SW X2 B 6 PNK 22 INST CLUST MULTI FUNCT SW/TURN SIG/INST PAN/STP LMP SW X2 B 7 BLK JUMP-B3X4 TURN SIG SW PIN F X2 B 8 X2 B 9 X2 B 10 PPL JUMP-E3X3 STP LMP SW X2 B 11 BRN JUMP-E4X3 REAR FUSE BLOCK E8X1 X2 C 1 X2 C 2 DKGRN/WHT 11 BCM E11 FOG LMP CTRL X2 C 3 LT GRN 7 BCM B3X1 X2 C 4 X2 C 5 X2 C 6 X2 C 7 X2 C 8 X2 C 9 ORG 12 STOP LAMP SWTCH X2 C 10 X2 C 11 BRN JUMP-B5X3 REAR FUSE BLK F8X1 X2 C 12 BLK/WHT N/A BCM PIN A4 X2 D 1 DKGRN/WHT 11 HEADLAMP SW FOGLAMP IND X2 D 2 X2 D 3 WHT 7 BCM PIN A2X1 X2 D 4 X2 D 5 ORG 25 TURN/HAZARD FLASHER MODULE X2 D 6 X2 D 7 X2 D 8 X2 D 9 ORG 13 DLC/CIG LIGHTER X2 D 10 DK GRN 50 TURN SIG HAZ FLSH MOD PIN D X2 D 11 X2 E 1 ORG 24 INSTRUMENT PANEL X2 E 2 BLK 21 HORN SW(YEL/BLK)/BCM E12X2 X2 E 3 X2 E 4 X2 E 5 PNK 16 REAR FUSE BLK>BCM X2 E 6 ORG 16 PEDAL ADJ SW X2 E 7 ORG 15 ELECT EDJ PEDAL X2 E 8 X2 E 9 X2 E 10 X2 E 11 X2 E 12 ORG 31 BCM/THEFT DETER X2 F 1 ORG 19 TRAILER PROVISION(ELEC BRAKE) X2 F 2 X2 F 3 X2 F 4 X2 F 5 YEL 18 AIRBAG X2 F 6 X2 F 7 YEL 17 IGN SWTCH PWR FEED X2 F 8 X2 F 9 X2 F 10 ORG/BLK JNCT-D8A10X1 ECM PIN 47X3 X2 F 11 RED 34 IGN SWTH PIN F
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X3 A 1 X3 A 2 PNK 54 THFT DETER ALM/2ND AIR PMP RLY X3 A 3 ORG 1 AIR SUSPENSION X3 A 4 X3 A 5 ORG 26 EVAP CAN VENT SOLENOID VLV X3 A 6 X3 A 7 X3 A 8 X3 A 9 X3 A 10 X3 A 11 X3 B 1 X3 B 2 X3 B 3 X3 B 4 GRN 4 TRAILER CONNECTOR X3 B 5 BRN JUMP -C11X2 EBCM PIN 32 X3 B 6 X3 B 7 X3 B 8 X3 B 9 X3 B 10 X3 B 11 X3 C 1 X3 C 2 X3 C 3 X3 C 4 X3 C 5 X3 C 6 X3 C 7 X3 C 8 X3 C 9 X3 C 10 X3 C 11 X3 D 1 X3 D 2 YEL 51 TRAILER CONNECTOR X3 D 3 X3 D 4 X3 D 5 TAN/BLK JUMP-B10X1 EBCM PIN 14 X3 D 6 X3 D 7 X3 D 8 X3 D 9 X3 D 10 X3 D 11 X3 E 1 ORG 24 INST CLUSTER X3 E 2 X3 E 3 PPL JUMP-B10X2 EBCM PIN 6 X3 E 4 BRN JUMP-B11X2 PIN 3 AIR SUSP COMPRES X3 E 5 ORG 8 TCASE ENCODER X3 E 6 X3 E 7 X3 E 8 X3 E 9 X3 E 10 X3 E 11 X3 E 12 X3 F 1 BLK BRAKE FLUID LVL SW/FRT AXL ACTU X3 F 2 ORG/BLK JUMP-A7X1 EBCM PIN 28 X3 F 3 GRY 10 FUEL PUMP SENDER PIN 4 X3 F 4 WHT JUMP-B9X1 EVAP CANISTER VENT X3 F 5 X3 F 6 DK GRN 50 TRAILER CONNECTOR X3 F 7 X3 F 8 X3 F 9 X3 F 10 X3 F 11
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X4 A 1 X4 A 2 X4 A 3 X4 A 4 X4 A 5 X4 A 6 X4 A 7 X4 A 8 X4 A 9 X4 A 10 X4 A 11 X4 B 1 X4 B 2 X4 B 3 X4 B 4 X4 B 5 X4 B 6 X4 B 7 DK GRN 7 REAR WINDOW WASHER FLUID PUMP X4 B 8 X4 B 9 X4 B 10 X4 B 11 X4 C 1 X4 C 2 X4 C 3 X4 C 4 X4 C 5 X4 C 6 X4 C 7 X4 C 8 X4 C 9 X4 C 10 X4 C 11 X4 D 1 X4 D 2 X4 D 3 X4 D 4 X4 D 5 X4 D 6 X4 D 7 X4 D 8 X4 D 9 X4 D 10 X4 D 11 X4 E 1 DKGRN/WHT 5 LEFT HIGH BEAM HEADLIGHT X4 E 2 YEL 6 LEFT LOW BEAM HEADLIGHT X4 E 3 X4 E 4 RED 9 WASHER FLUID PUMP X4 E 5 X4 E 6 X4 E 7 X4 E 8 X4 E 9 X4 E 10 X4 E 11 X4 E 12 X4 F 1 LTGRN/BLK 2 RIGHT HIGH BEAM HEADLIGHT X4 F 2 TAN/WHT 3 RIGHT LOW BEAM HEADLIGHT X4 F 3 X4 F 4 DK GRN 21 HORN X4 F 5 PPL 7 HEADLAMP WASHER FLUID PUMP X4 F 6 PPL 11 FOG LAMPS X4 F 7 X4 F 8 X4 F 9 X4 F 10 X4 F 11
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X5 A 1 RED/WHT 36 IGN SW PIN B
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X7 A 1 RED 56 AIR PUMP RELAY X7 B 2 RED 33 EBCM PIN 31
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X8 B 1 RED 33 EBCM PIN
UNDERHOOD FUSE CENTER CONNECTOR ROW PIN COLOR FUSE PURPOSE X9 A 1 RED 35 BLOWER MOTOR RESISTOR ASSM
DATA LINK (OBD2 PORT PIN COLOR COMPONET+PIN 1 2 PPL FROM SPLICE PACK JX205 3 4 BLK CHASSIS GROUND 5 BLK/WHT ENGINE BLOCK GROUND G102 6 DKBLU TCM PIN 6 7 8 9 10 11 12 13 14 LT BLU>LT BLU/BLK TCM PIN 6 15 16 ORG B+
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Originally Posted by ericjon262
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