SERV. MAN. UPDATE - SEC. 8A PASS THRU HARNESS CONNECTOR

SUBJECT: PASS THRU HARNESS CONNECTOR

MODELS/YEARS: 1992 SILHOUETTE

This bulletin provides information on the PCM/ECM to engine harness pass thru connector interface.

The pass thru interface was added to ease the manufacturing process. The pass thru harness reduces the possibility of pinching and chafing conditions. The information is intended as a supplement to the 1992 Silhouette Service Manual.

C110 VIN D

CAVITY WIRE COLOR CKT DESCRIPTION PAGE ------ ---------- --- ----------- --- A1 ORN 840 B+ ENGINE CONTROL MODULE (ECM) 8A-20-1 POWER FEED

A2 ORN 840 B+ ENGINE CONTROL MODULE (ECM) 8A-20-1 POWER FEED

A3 BLK/WHT 450 ENGINE CONTROL MODULE (ECM) 8A-20-1 GROUND

B2 DK GRN 468 FUEL INJECTOR #2 CONTROL 8A-20-4

D2 BLK/WHT 450 DATA LINK CONNECTOR (DLC) 8A-20-3 GROUND

D3 LT BLU 67 C67 - A/C REQUEST SIGNAL 8A-64-0

D4 DK GRN/WHT 459 C67 - A/C COMPRESSOR CONTROL 8A-64-0

E1 DK GRN/WHT 465 FUEL PUMP RELAY CONTROL 8A-20-4

E2 DK GRN/WHT 473 C34 - COOLANT PUSHER FAN 8A-31-1 CONTROL

F2 DK GRN/WHT 603 C67 - A/C REFRIGERANT PRESSURE 8A-31-0 SWITCH SIGNAL

G2 DK GRN/WHT 335 COOLANT PULLER FAN CONTROL 8A-31-0

G3 PNK/WHT 350 B+ IGNITION FEED 8A-20-2

H2 LT GRN 432 MANIFOLD ABSOLUTE PRESSURE 8A-20-6 (MAP) SENSOR SIGNAL

J1 PPL/WHT 806 CRANK SIGNAL 8A-30-0

J2 GRY 416 5 VOLT REFERENCE OUTPUT TO 8A-20-6 TPS SENSOR

J3 TAN 413 OXYGEN SENSOR GROUND INPUT 8A-20-6 SIGNAL LO

J4 TAN/BLK 422 TRANSAXLE CONVERTER CLUTCH 8A-20-2 CONTROL

K1 TAN/WHT 551 OXYGEN SENSOR INPUT SIGNAL 8A-20-6 LO

K2 PPL 420 TORQUE CONVERTER CLUTCH 8A-20-2 (TCCO SOLENOID BRAKE ENABLE

**CAVITIES NOT LISTED ARE NOT USED** ------------------------------------ C111 VIN D ----------- CAVITY WIRE COLOR CKT DESCRIPTION PAGE ------ ---------- --- ----------- ---- A1 ORN 440 B+ OIL PRESSURE SWITCH 8A-20-4 FEED

A2 ORN 440 B+ FUEL PUMP RELAY FEED 8A-20-4

B1 ORN/BLK 434 PARK/NEUTRAL SIGNAL 8A-20-3

B2 PPL/WHT 430 DISTRIBUTOR REFERENCE HI 8A-20-1

B3 GRY 435 EGR ELECTRONIC VACUUM 8A-20-5 REGULATOR VALVE CONTROL

B4 WHT 423 SPARK TIMING OUTPUT 8A-20-1

C1 BLK 452 ENGINE COOLANT TEMPERATURE 8A-20-5 SENSOR GROUND

C2 GRY 420 FUEL PUMP ON SIGNAL 8A-20-4

D1 BLK 452 THROTTLE POSITION (TP) 8A-20-6 SENSOR GROUND

D2 LT BLU/BLK 442 IDLE AIR CONTROL MOTOR SIGNAL 8A-20-4

D3 LT GRN/WHT 443 IDLE AIR CONTROL MOTOR SIGNAL 8A-20-4

D4 LT GRN/BLK 444 IDLE AIR CONTROL MOTOR SIGNAL 8A-20-4

E1 TAN/BLK 424 BYPASS OUTPUT 8A-20-1

E2 BLK/RED 453 DISTRIBUTOR REFERENCE LO 8A-20-1

F1 PNK/WHT 350 B+ IGNITION POWER FEED - 8A-20-2 HOT IN RUN

F2 PNK/BLK 439 B+ ENGINE CONTROL MODULE 8A-20-5 (ECM) POWER FEED

G1 PPL 455 MANIFOLD ABSOLUTE PRESSURE 8A-20-6 (MAP) GROUND

G2 DK BLU 496 KNOCK SENSOR (KS) SIGNAL 8A-20-5

G3 BRN 486 KNOCK SENSOR (KS) MODULE 8A-20-5 GROUND

G4 PPL 412 OXYGEN SENSOR (02) SIGNAL 8A-20-6

H1 YEL 400 VEHICLE SPEED SENSOR (VSS) 8A-33-0 SIGNAL

H2 PPL 401 VEHICLE SPEED SENSOR (VSS) 8A-33-0 SIGNAL

J1 YEL 410 ENGINE COOLANT TEMPERATURE 8A-20-6 (ECT) SIGNAL

J2 LT BLU/WHT 441 IDLE AIR CONTROL (IAC) MOTOR 8A-20-4 SIGNAL

J3 GRY 416 5 VOLT REFERENCE OUTPUT TO 8A-20-6 MAP SENSOR

J4 DK BLU 417 THROTTLE POSITION (TP) SENSOR 8A-20-6 SIGNAL

K1 PNK/BLK 439 B+ KNOCK SENSOR (KS) POWER FEED 8A-20-5

K2 PNK/BLK 439 B+ ENGINE CONTROL MODULE (ECM) 8A-20-1 POWER FEED - HOT IN RUN, BULB TEST OR START

**CAVITIES NOT LISTED ARE NOT USED** ------------------------------------ C110 VIN L ---------- CAVITY WIRE COLOR CKT DESCRIPTION PAGE ------ ---------- --- ----------- ---- A1 ORN 840 B+ POWERTRAIN CONTROL MODULE (PCM) 8A-21-0 POWER FEED

A2 ORN 840 B+ POWERTRAIN CONTROL MODULE (PCM) 8A-21-0 POWER FEED

A3 BLK/WHT 450 POWERTRAIN CONTROL MODULE (PCM) 8A-21-0 GROUND

B1 BLK/WHT 771 TRANSAXLE POSITION SWITCH SIGNAL 8A-21-6 BIT 1

B2 YEL 772 TRANSAXLE POSITION SWITCH SIGNAL 8A-21-6 BIT 2

B3 GRY 773 TRANSAXLE POSITION SWITCH SIGNAL 8A-21-6 BIT 3

B4 WHT 776 TRANSAXLE POSITION SWITCH SIGNAL 8A-21-6 PARITY BIT

C1 LT GRN 1222 TRANSAXLE CONVERTER CLUTCH SOLENOID 8A-21-5 F OUTPUT

C2 YEL/BLK 1223 TRANSAXLE CONVERTER CLUTCH SOLENOID 8A-21-5 C OUTPUT

D1 BLK/WHT 450 DATA LINK CONNECTOR (DLC) 8A-21-2 GROUND

D2 BLK/WHT 450 POWERTRAIN CONTROL MODULE (PCM) 8A-21-0 GROUND

D3 LT BLU 67 A/C CYCLING PRESSURE SWITCH 8A-64-2

D4 DK GRN/WHT 459 A/C COMPRESSOR CONTROL RELAY 8A-64-2 OUTPUT E1 DK GRN/WHT 465 FUEL PUMP RELAY CONTROL 8A-21-7

E2 DK GRN/WHT 473 COOLANT PUSHER FAN CONTROL 8A-31-2

F1 WHT 584 TCC PWM SOLENOID CONTROL 8A-21-5

F2 DK GRN/WHT 603 COOLANT FAN REQUEST 8A-31-2

G1 PNK/BLK 639 CRUISE CONTROL POWER FEED 8A-34-1

G2 DK GRN/WHT 335 COOLANT PULLER FAN RELAY 8A-31-2 CONTROL

G3 PNK/WHT 350 B+ IGNITION POWER FEED 8A-21-5

G4 DK GRN/YEL 428 VAPOR CANISTER PURGE SOLENOID 8A-21-5 CONTROL

H1 TAN 398 SERVO POSITION SENSOR 8A-34-2 INPUT - Hi

H2 LT BLU/BLK 399 SERVO POSITION SENSOR 8A-34-2 INPUT - LO

J1 LT GRN 402 VACUUM VALVE CONTROL 8A-34-2

J2 DK BLU/WHT 403 VENT VALVE CONTROL 8A-34-2

J3 TAN 413 OXYGEN SENSOR INPUT-LO 8A-21-3

J4 TAN/BLK 422 TRANSAXLE CONVERTER CLUTCH 8A-21-5 CONTROL

K1 TAN/WHT 551 POWER GROUND 8A-21-0

K2 PPL 420 BRAKES APPLIED INPUT 8A-21-5

K3 BLK/WHT 450 FUEL INJECTOR GROUND 8A-21-0

**CAVITIES NOT LISTED ARE NOT USED** ------------------------------------ C111 VIN L ---------- CAVITY WIRE COLOR CKT DESCRIPTION PAGE ------ ---------- --- ----------- ---- A2 BLK/LT GRN 842 FUEL INJECTOR #2 CONTROL 8A-21-4

A3 BLK/PNK 843 FUEL INJECTOR #3 CONTROL 8A-21-4

B1 PNK/BLK 839 B+ FEED - SEQUENTIAL FUEL 8A-21-4 INJECTION

82 WHT 423 IGNITION CONTROL (IC) OUTPUT 8A-21-1

B3 BLK 452 SENSOR RETURN #2 8A-21-3

B4 PPL/WHT 430 REFERENCE PULSE INPUT - Hi 8A-21-1

C1 BLK/BLU 844 FUEL INJECTOR #4 CONTROL 8A-21-4

C2 PPL 412 OXYGEN SENSOR INPUT - Hi 8A-21-3

D1 BLK/YEL 846 FUEL INJECTOR #6 CONTROL 8A-21-4

D2 LT BLU/BLK 442 IDLE AIR CONTROL "A" LO 8A-21-7

D3 LT GRN/WHT 443 IDLE AIR CONTROL "B" HI 8A-21-7

D4 LT GRN/BLK 444 IDLE AIR CONTROL "B" LO 8A-21-7

E1 TAN/BLK 424 IGNITION MODULE BYPASS 8A-21-1 CONTROL

E2 BLK/RED 453 REFERENCE PULSE INPUT-LO 8A-21-1

F1 BLK/WHT 454 SENSOR RETURN #1 8A-21-3

F2 TAN 472 INTAKE AIR TEMPERATURE SENSOR 8A-21-3 (IAT) INPUT

G1 YEL 492 MASS AIR FLOW (MAF) SENSOR 8A-21-2 INPUT

G2 DK BLU 496 KNOCK SENSOR (KS) INPUT 8A-21-2

G3 BLK 630 CAMSHAFT REFERENCE INPUT 8A-21-1

G4 LT BLU/BLK 647 18X REFERENCE Hi 8A-21-1

H1 YEL 400 VEHICLE SPEED SENSOR (VSS) 8A-33-1 INPUT - Hi

H2 PPL 401 VEHICLE SPEED SENSOR (VSS) 8A-33-1 INPUT - LO

J1 YEL 410 ENGINE COOLANT TEMPERATURE 8A-21-3 (ECT) INPUT

J2 LT BLU/WHT 441 IDLE AIR CONTROL "A" Hi 8A-21-7

J3 GRY 416 5 VOLT REFERENCE 8A-21-3

J4 DK BLU 417 THROTTLE POSITION (TP) SENSOR 8A-21-3 INPUT

K1 PNK/BLK 439 IGNITION INPUT 8A-21-2

K2 BLK/WHT 845 FUEL INJECTOR #5 CONTROL 8A-21-4

**CAVITIES NOT LISTED ARE NOT USED** -------------------------------------

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.