1991-1995 VH45DE ECU PINOUT

VH45DE Wiring Diagram Pin # Color Description 1 Ignition 1 2 Ignition 8 3 Ignition 7 4 Fan Relay LOW (Ground signal for ON) 5 Fan Relay HIGH (Ground Signal for ON) 6 FP Control Unit 7 TACHOMETER SPEED SIGNAL 8 Canister Control Solenoid 9 A/C RELAY 10 Engine Ground 11 Ignition 3 12 Ignition 6 13 Ignition 5 14 Ignition 4 15 Ignition 2 16 ECCS RELAY 17 18 FUEL PUMP RELAY 19 FP Control Unit 20 Engine Ground 21 (RX) RECEIVE 22 (TX) TRANSMIT 23 Knock Sensor RH SIDE 24 Knock Sensor LH SIDE 25 26 MAFS SIGNAL GROUND 27 MAFS SIGNAL 28 ENGINE TEMP SENSOR 29 O2 Sensor RH side 30 SENSOR GROUND 31 CLOCK (SYNCRONIZATION SIGNAL) 32 Check Engine Light (CEL) 33 34 AUTO TRANS 35 AUTO TRANS 36 TCM 37 TCM 38 TPS Output

Pin # 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116

Color

Description EGR TEMP POWER STEERING SWITCH CAM ANGLE SENSOR (120 DEGREE) CRANK ANGLE SENSOR (1 DEGREE) IGNITION SWITCH START SIGNAL NEUTRAL SWITCH IGNITION SWITCH (IGN) A/C SWITCH (CHK) CHECK (DIAGNOSIS ACTIVATION) 5v Power Supply ECCS POWER +12v Engine Ground CAM ANGLE SENSOR (120 DEGREE) SUB-CAMSHAFT Sensor VEHICLE SPEED SENSOR THROTTLE VALVE SWITCH (Closed) O2 Sensor LH side AUTO TRANS THROTTLE VALVE SWITCH BATTERY POWER SUPPLY ECCS POWER +12v Engine Ground Injector 1 EGR Solenoid Injector 7 VTC Solenoid Injector 6 Injector 2 INJECTOR GROUND INJECTOR GROUND INJECTOR POWER SUPPLY Injector 8 Idle Control Valve Injector 3 Injector 4 Injector 5 O2 Heater Trigger INJECTOR GROUND