LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 1991 >> Impulse RS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - EFI >> Diagnostic Circuit Check >> ECM Terminal Identification-SOHC

ECM Terminal Identification-SOHC

Fig 1: ECM Connector & Terminal Pin ID (SOHC)
G91D16876Courtesy of ISUZU MOTOR CO.
ECM CONNECTOR C47 (24 PIN) TERMINAL PIN ID (1)(2)

PIN & (WIRE COLOR) CIRCUIT NAME
C47-1 (Pnk/Wht) Fuel Pump Relay
C47-2 (Gry/Red) A/C Cut-Out Relay
C47-5 (Vlt) Check Engine Light
C47-6 (Red/Grn) Ignition Feed Main Relay
C47-8 (Orn/Blk) Serial Data Output
C47-9 (Orn/Yel) Diagnostic Request
C47-10 (White) VSS Signal Output
C47-11 (Gray) Coolant, MAP Sensor Ground
C47-12 (Blk/Blu) ECM Ground
C47-13 (Red/Wht) SBF Box 30A
C47-15 (Yel/Blk) Distributor Reference Ground
C47-17 (Yel/Red) Distributor Reference Signal Input
C47-20 (Grn/Orn) A/C Request Input
C47-22 (Pnk/Blu) P/N Switch (A/T)
C47-24 (Gry/Blu) EGR GAS Temp Sensor Input
(1) Terminal C47-1 through C47-12 correspond to A-1 through A-12 and C47-13 through C47-24 correspond to B-1 through B-12.
(2) Terminals not listed are not used.
ECM CONNECTOR C46 (32 PIN) TERMINAL PIN ID (1)(2)

PIN & (WIRE COLOR) CIRCUIT NAME
C46-1 (Orn/Blu) Shift Indicator Relay
C46-3 (Brn/Yel) IAC (Coil B Low)
C46-4 (Brn/Red) IAC (Coil B High)
C46-5 (Brn/Blk) IAC (Coil A High)
C46-6 (Brn/Wht) IAC (Coil A Low)
C46-7 (Grn/Yel) P/S Switch Input
C46-10 (Gry/Blk) Coolant Temp Sensor Input
C46-11 (Gry/Red) MAP Sensor Signal Input
C46-12 (Blu/Blk) MAT Sensor Signal Input
C46-13 (Blu/Red) TPS Signal Input
C46-14 (Blu/Orn) 5V Reference Output
C46-15 (Blu/Yel) Injector 3 & 4 Driver
C46-16 (Red/Wht) SBF Box (30A)
C46-17 (Blk/Blu) ECM Ground
C46-18 (Black) TPS, MAT Sensor Ground
C46-19 (Blk/Blu) Engine Ground
C46-20 (Yellow) EST Output
C46-21 (Yel/Grn) Ignition Module Bypass
C46-22 (Blk/Blu) O2 Sensor Engine Ground
C46-23 (Lt Blu) O2 Sensor Input Signal
C46-24 (Blk/Blu) Engine Ground
C46-28 (Wht/Grn) EGR Control
C46-31 (Blu/Wht) Injector 1 & 2 Driver
(1) Terminal C46-1 through C46-16 correspond to C-1 through C-16 and C46-17 through C46-32 correspond to D-1 through D-16.
(2) Terminals not listed are not used.