Buick - Roadmaster - Wiring Diagram - 1992 - 1992

5/3/2020 Electronic/Powertrain Control Module (ECM/PCM) (Powertrain Management) - ALLDATA Repair 1992 Buick Roadmaster V8-350 5.7L Vehicle > Powertrain Management > Diagrams > Electrical (OE) ELECTRONIC/POWERTRAIN CONTROL MODULE (ECM/PCM) ECM Wiring Diagram (1 Of 5) A8 = SERIAL DATA A9 = DIAGNOSTIC TEST TERMINAL A12 = ECM GROUND D1 = ECM GROUND D6 = OXYGEN SENSOR GROUND D7 = OXYGEN SENSOR SIGNAL https://my.alldata.com/repair/#/repair/article/7494/component/1233/itype/21/nonstandard/1681886/selfRefLink/false 1/5 5/3/2020 Electronic/Powertrain Control Module (ECM/PCM) (Powertrain Management) - ALLDATA Repair C12 = IAT SENSOR SIGNAL C10 = COOLANT TEMPERATURE SIGNAL A11 = CTS, TPS & IAT SENSOR GROUND C13 = TPS SIGNAL C14 = +5V REFERENCE C11 = MAP SENSOR SIGNAL D2 = MAP SENSOR GROUND C9 = CRANK SIGNAL C5 = IAC COIL "A" HIGH C6 = IAC COIL "A" LOW C4 = IAC COIL "B" HIGH C3 = IAC COIL "B" LOW ECM Wiring Diagram https://my.alldata.com/repair/#/repair/article/7494/component/1233/itype/21/nonstandard/1681886/selfRefLink/false 2/5 5/3/2020 Electronic/Powertrain Control Module (ECM/PCM) (Powertrain Management) - ALLDATA Repair B10 = PARK/NEUTRAL SWITCH SIGNAL A5 = "SERVICE ENGINE SOON" LIGHT CONTROL C7 = 4TH GEAR SWITCH SIGNAL A7 = TCC CONTROL D16 = INJECTOR DRIVER 1 D14 = INJECTOR DRIVER 2 D4 = EST B5 = REFERENCE D5 = BYPASS B3 = DISTRIBUTOR REFERENCE LOW ECM Wiring Diagram https://my.alldata.com/repair/#/repair/article/7494/component/1233/itype/21/nonstandard/1681886/selfRefLink/false 3/5 5/3/2020 Electronic/Powertrain Control Module (ECM/PCM) (Powertrain Management) - ALLDATA Repair C16 = BATTERY + B1 = BATTERY + A1 = FUEL PUMP RELAY DRIVE A12 = ECM GROUND B2 = FUEL PUMP SIGNAL (VOLTAGE MONITOR) C8 = A/C REQUEST C2 = A/C CLUTCH RELAY ECM Wiring Diagram https://my.alldata.com/repair/#/repair/article/7494/component/1233/itype/21/nonstandard/1681886/selfRefLink/false 4/5 5/3/2020 Electronic/Powertrain Control Module (ECM/PCM) (Powertrain Management) - ALLDATA Repair A3 = CANISTER PURGE SOLENOID CONTROL A10 = VSS SIGNAL B7 = SPARK RETARD SIGNAL (ESC) A6 = IGNITION FEED C1 = ELECTRIC DIVERTER VALVE (EDV) SOLENOID CONTROL A4 = EGR SOLENOID CONTROL C8 = POWER STEERING PRESSURE SWITCH INPUT https://my.alldata.com/repair/#/repair/article/7494/component/1233/itype/21/nonstandard/1681886/selfRefLink/false 5/5