Category Archives: Wiring

S13 Body Harness Pinout

Dash Connector, 15-pin white plug next to the ECU

1 – Blue/Black – Thermal Transmitter for OEM coolant temp gauge

2 – Yellow/Red – Tach signal for OEM tach

3 – Yellow/Green – Vehicle Speed Sensor (VSS) signal from speedometer

4 – Blue/Green – Thermistor Control Amplifier

10 – Orange – Start Signal, connect to start signal from ignition switch

11 - Green – Transmit (TX) pin for CONSULT

12 – Green/Black – Receive (RX) pin for CONSULT

13 – Green/Yellow – ?

14 - Green/White – Clock (CLK) synchronization pin for CONSULT

15 – Red – MIL Check Engine Light

17 – Black – ground for CONSULT

18 - Green/Red – Clock signal for CONSULT

? – Red/White – Fuel Pressure Control Module

? – Orange/Black – exhaust temp warning lamp

? – Blue/White - Intake Air Temperature Sensor

Misc Pinouts

Dash Connector, 15-pin white plug next to the ECU

1 – Blue/Black – Thermal Transmitter for OEM coolant temp gauge

2 – Yellow/Red – Tach signal for OEM tach

3 – Yellow/Green – Vehicle Speed Sensor (VSS) signal from speedometer

4 – Blue/Green – Thermistor Control Amplifier

10 – Orange – Start Signal, connect to start signal from ignition switch

11 - Green – Transmit (TX) pin for CONSULT

12 – Green/Black – Receive (RX) pin for CONSULT

13 – Green/Yellow – ?

14 - Green/White – Clock (CLK) synchronization pin for CONSULT

15 – Red – MIL Check Engine Light

17 – Black – ground for CONSULT

18 - Green/Red – Clock signal for CONSULT

? – Red/White – Fuel Pressure Control Module

? – Orange/Black – exhaust temp warning lamp

? – Blue/White - Intake Air Temperature Sensor



ECU plug:

Large 64-pin connector:
1 – Coil Pack 1 Output (Via power transistor Unit) – Red White, connect to pin 1 of ignitor chip
2 – Coil Pack 2 Output (Via power transistor Unit) – Red Yellow, connect to pin 2 of ignitor chip
3 – Tachometer signal output – Yellow Red, not needed
4 – ECCS Relay – Red Black, connect to ground pin of ECCS relay
5 – Ignition Pulse Monitor (IT monitor, For Trip Comp ?), not needed
6 – Ignition Signal Ground – Black, connect to ground
7 – RX data (Signal from Nissan Consult hand terminal) -Green Black, not needed
8 – Coil Pack 3 Output (Via power transistor Unit) – Red White, connect to pin 4 of ignitor chip
9 – Coil Pack 4 Output (Via power transistor Unit) – Red White, connect to pin 5 of ignitor chip
10 -
11 -
12 – A/T autotrans gear select – Pink Black, not needed
13 – Ignition Signal Ground – Black, connect to ground
14 – CLK clock (timing signal) – Green White, not needed
15 – TX data (signal to Nissan Consult hand terminal) – Green, not needed
16 – MAFS signal input ( Mass Air Flow Sensor ) – White, connect to signal pin of MAFS
17 – MAFS ground – Black, connect to ground pin of MAFS
18 – Water Temp Sensor input – Blue Brown, connect to positive terminal of 2-pin coolant temperature sensor
19 – Oxygen Sensor input (O2) – White, connect to middle signal pin of O2 sensor
20 – TPS input (throttle postion sensor) – White, connect to signal pin of TPS
21 – Sensor ground – Black, connect to ground
22 – CAS 180deg signal (Crank angle sensor) – White, connect to pin 1 of CAS
23 – CLK for CONSULT - Green Red, not needed
24 – Monitor check Lamp (red) (fault code lamp output), not needed
25 – Exhaust over temp warning lamp output – Orange, not needed
26 – Exhaust temp sensor (Behind the Cat) – Blue Yellow, not needed
27 – Detonation sensorinput (knock sensor) – White, connect to knock sensor
28 – TPS for A/T (kick down switch), not needed
29 – Sensor ground – Black, connect to ground
30 – CAS 180deg signal (crank angle sensor) – White, connect to pin 1 of CAS
31 – CAS 1deg signal (crank angle sensor) – Black, connect to pin 2 of CAS
32 – Speed sensor input – Yellow Green, not needed
33 -
34 – Start signal (from ignition switch) – Orange, connect to start signal from ignition switch
35 – A/T neutral switch input – Green Orange, not needed
36 – IGN (ignition ON, from ignition switch) – Black Red, connect to switched ignition power
37 – TPS power output (power to throttle position sensor) – Light Green Red, connect to pin 3 of TPS
38 – ECCS power – Black White, connect to power output pin of ECCS relay
39 – ECCS ground – Black, connect to ground
40 – CAS 1 deg signal (crank angle sensor) – Red Black, connect to pin 2 of CAS
41 – A/C on input (Air Con ON from A/C panel) – Blue Green, not needed
42 – A/T signal DT1 (auto trans gear select), not needed
43 - Power steering switch (speed proportional control output) – Purple White, not needed
44 – A/T signal DT1 (auto trans gear select), not needed
45 – Ambient air temp sensor input – Blue White, not needed
46 – ECCS backup power – Red, connect to constant power
47 – ECCS power – Black White, connect to power output pin of ECCS relay
48 – ECCS ground – Black, connect to ground
101 – Injector No. 1 drive output – White Black, connect to pin 2 of #1 injector
102 – EAI control solenoid output (egr valve control) – Orange Black, not needed
103 – Injector No.3 drive output – Green Black, connect to pin 2 of #3 injector
104 – Fuel pump relay output – Black/Pink, connect to ground pin of fuel pump relay
105 – Fuel pressure control module – Red White, not needed
106 – A/C on output (Air conditioner on relay signal) – Green Black, not needed
107 – Injector ground – Black, connect to ground
108 – Injector ground – Black, connect to ground
109 – Reverse electrical flow return circuit (alternator fail input) – Red, connect to constant power
110 – Injector No. 2 drive output – Yellow Black, connect to pin 2 of #2 injector
111 – Turbo boost pressure control solenoid (over boost cut ?) – Orange Black, not needed
112 – Injector No. 4 drive output – Blue Black, connect to pin 2 of #4 injector
113 - AAC valve control (Auxiliary Air Control, Idle speed control) – Light Blue, connect to pin 3 of AAC/FICD subharness
114 -
115 -
116 – Injector ground – Black, connect to ground

O2 Sensor Plug, connect to O2 sensor
1 – Brown, Power for heating element, connect to switched power
2 – White, Signal, connect to pin 19 of ECU and the shielded wire to ground
3 – Black , Ground, connect to ground

Coil pack harness – 5 pins, 2 rows x 3 pins per row, 1 pin blank, grey, connect to coil pack subharness
Blue/Red – coil pack power, connect to switched power
Red/Green – #4 coil signal, connect to pin A of ignitor chip
Red – #3 coil signal, connect to pin B of ignitor chip
Red/White – #2 coil signal, connect to pin C of ignitor chip
Red/Blue – #1 coil signal, connect to pin D of ignitor chip

Ground Terminals - connect to suitable chassis grounds

Injector #1, connect to #1 injector
1 – Red, power, connect to switched power
2 – White/Black, #1 injector signal, connect to pin 101 of ECU

Injector #2, connect to #2 injector
1 – Red, power, connect to switched power
2 – Yellow/Black, #2 injector signal, connect to pin 110 of ECU

Injector #3, connect to #3 injector
1 – Red, power, connect to switched power
2 – Green/Black, #3 injector signal, connect to pin 103 of ECU

Injector #4, connect to #4 injector
1 – Red, power, connect to switched power
2 – Blue/Black, #4 injector signal, connect to pin 112 of ECU

AAC valve and FICD – 4 pins, 2 pins per row X 2 rows, connect to the idle control system subharness, the FICD pins are for the AC and are not needed
1 – Blue/Red, FICD ground, goes to the Small Grey Plug, not needed
2 – Blue/Green, FICD power from AC relay, from the Small Grey Plug, not needed
3 – Sky Blue, AAC valve ground, connect to pin 113 of ECU
4 – Black/Yellow, AAC valve power, connect to switched power at the Big Grey Plug

Detonation Sensor – 2 pin, grey, connect to the knock sensor
1 – White, knock sensor signal, connect to pin 27 of ECU
2 – Black, ground, connect to ground

Coolant Temp Connector – connect to coolant temp subharness
Blue/Orange – sensor signal for coolant temp, pin 18 of ECU
Black – sensor ground, connect to ground
Blue/Black – thermal transmitter, not needed

Coolant Temperature Sensor – connect to coolant temp sensor
Blue/Orange – sensor signal for coolant temp, pin 18 of ECU
Black – sensor ground, connect to ground

Thermal Transmitter – not needed
Red – thermal transmitter, not needed

Throttle Position Sensor – connect to TPS
1 – Light Green/Red, TPS power, connect to pin 37 of ECU
2 – White, TPS signal, connect to pin 20 of ECU
3 – Black, sensor ground, connect to ground

Cam Angle Sensor - connect to CAS but DO NOT CONNECT TO IGNITOR CHIP BY ACCIDENT. These connectors are the same and will interchange if not careful.
1 – Thick White, CAS 180 degree signal, connect to pins 22, 30 and ground
2 – Thick Black, CAS 1 degree signal, connect to pins 31, 40 and ground
3 – Black/White, CAS power, connect to switched power
4 – Black, ground, connect to ground

Ignitor chip – connect to ignitor chip
1 – Red/White, #1 coil signal, connect to pin 1 of ECU
2 – Red/Yellow, #2 coil signal, connect to pin 2 of ECU
3 – Black, ground, connect to ground
4 – Red/Green, #3 coil signal, connect to pin 8 of ECU
5 – Red/Blue, #4 coil signal, connect to pin 9 of ECU
A – Red/Green – #4 coil signal, connect to coil pack subharness
B – Red – #3 coil signal, connect to coil pack subharness
C – Red/White – #2 coil signal, connect to coil pack subharness
D – Red/Blue – #1 coil signal, connect to coil pack subharness

Turbo Boost Pressure Solenoid, 2-pin, black plug, not needed
1 – Brown, power, connected to Brown Plug, not needed
2 – Orange/Black, solenoid activation signal controlled by pin 111 of ECU, not needed

EAI EGR, 2 pin, not needed
1 – Orange/Blue, activation signal controlled by pin 102 of ECU, not needed
2 – Brown, switched power, connected to Brown Plug, not needed

Power Steering Switch, 2 pin, black, not needed
Purple/White – switch power controlled by pin 43 of ECU, not needed
Black – ground, not needed

AC compressor, 1 pin, white, not needed
Blue/Green – power from the AC relay, not needed

MAFS, 4 pin, 1 pin blank, black
1 – White, MAF signal, connect to pin 16 of ECU
2 – Black, MAF ground, connect to pin 17 of ECU and ground
3 – Unknown colour, power, connect to switched power

Intake Air Temperature Sensor, 2 pin, black, not needed
Blue/White - Intake Air Temp Sensor connected to dash plug, not needed
Black – ground, not needed

#1 Coil Check Connector, 1 pin, grey cylindrical, not needed
Red – #1 coil signal connected to check resistor, not needed

Tach Check connector, 1 pin, grey cylindrical, not needed
Yellow/Red – tach signal on pin 3 of ECU, not needed

#1 Coil Check Connector Resistor, 2 pin, brown plug, not needed
Red/Blue – #1 coil signal from ignitor chip, not needed
Red – check connector, not needed

Brown Plug, 8 pin, 3 pins empty, cut and rewire as necessary
Red/Black – ECU relay ground pin controlled by pin 4 of ECU, connect to ground pin of ECU relay
Brown – Power source for all sensors, connect to switched power
Green/Yellow – AC relay, not needed
Black/Pink – fuel pump relay ground pin controlled by pin 104 of ECU, connect to ground pin of fuel pump relay
Green/Orange – park/neutral position to pin 35, not needed

Small Grey Plug, 6 pin, 2 pins empty, not needed
Black – ground, not needed
Blue/Yellow – exhaust temp sensor signal to pin 26 of ECU, not needed
Blue/Green – AC power, not needed
Blue/Red – FICD ground, not needed

Big Grey Plug, 8 pin, 2 pins empty, cut off and rewire as needed
Blue/Red – coil pack power, connect to switched power
Black/Red – ingition power, connect to switched power
Blue/Yellow – AAC valve power, connect to switched power
Black/White – ECU power to pin 47 and 38 of ECU, connect to switched power
Blue/Green – power from the AC relay, power goes to the AC compressor and the FICD, not needed
Red – ECU Backup power to pins 46 and 109 of ECU, connect to constant power

S13 SR20DET ECU Pinout

nissan_sr20det_1991_1995

1 Red/White Coil Pack 1 Output, connect to pin 1 of ignitor chip
2 Red/Yellow Coil Pack 2 Output, connect to pin 2 of ignitor chip
3 Yellow/Red Tachometer signal output, connect to tachometer
4 Red/Black ECCS Relay Ground, connect to ground pin of ECCS relay
5 ? Injector Pressure TI Monitor
6 Black Ignition Signal Ground, connect to ground
7 Green/Black CONSULT RX (Receive)
8 Red/White Coil Pack 3 Output, connect to pin 4 of ignitor chip
9 Red/White Coil Pack 4 Output, connect to pin 5 of ignitor chip
10 - 
11 -
12 Pink/Black A/T gear select
13 Black Ignition Signal Ground, connect to ground
14 Green/White CONSULT CLK (Clock)
15 Green CONSULT TX (Transmit)
16 White MAFS signal, connect to signal pin of MAFS
17 Black MAFS ground, connect to ground pin of MAFS
18 Blue/Brown Water Temp Sensor input, connect to positive terminal of 2-pin coolant temperature sensor
19 White O2 Sensor signal, connect to middle signal pin of O2 sensor
20 White TPS signal, connect to signal pin of TPS
21 Black Sensor ground, connect to ground
22 White CAS 180deg signal, connect to pin 1 of CAS
23 Green/Red CONSULT CHK (Check)
24 Red Check Engine Lamp (red), connect to ground pin of light bulb
25 Orange Exhaust temp warning lamp, connect to ground pin of light bulb 
26 Blue/Yellow Exhaust temp sensor
27 White Detonation/Knock Sensor signal, connect to knock sensor
28 ? TPS kickdown switch for A/T
29 Black Sensor ground, connect to ground
30 White CAS 180deg signal, connect to pin 1 of CAS
31 Black CAS 1deg signal, connect to pin 2 of CAS
32 Yellow/Green Speed sensor input, connect to S13 speedometer
33 - 
34 Orange Start enrichment, connect to start signal from ignition switch
35 Green/Orange A/T neutral switch
36 Black/Red Switch ignition power ON/ST, connect to ignition switch
37 Light Green/Red TPS power, connect to pin 3 of TPS
38 Black/White ECCS power, connect to power output pin of ECCS relay
39 Black ECCS ground, connect to ground
40 Red/Black CAS 1 deg signal, connect to pin 2 of CAS
41 Blue/Green A/C switch
42 ? A/T signal DT1 (auto trans gear select)
43 Purple/White Power steering pressure switch
44 ? A/T signal DT1 (auto trans gear select)
45 Blue/White Ambient air temp sensor signal
46 Red ECCS backup power, connect to constant power
47 Black/White ECCS power, connect to power output pin of ECCS relay
48 Black ECCS ground, connect to ground
101 White/Black Injector 1, connect to pin 2 of #1 injector
102 Orange/Black EAI (Exhaust Air Injection) control solenoid 
103 Green/Black Injector 3, connect to pin 2 of #3 injector
104 Black/Pink Fuel pump relay, connect to ground pin of fuel pump relay
105 Red/White Fuel pressure control module
106 Green/Black A/C compressor power
107 Black Injector ground, connect to ground
108 Black Injector ground, connect to ground
109 Red Reverse electrical flow return circuit (alternator fail input), connect to constant power
110 Yellow/Black Injector 2, connect to pin 2 of #2 injector
111 Orange/Black Turbo boost pressure control solenoid
112 Blue/Black Injector 4, connect to pin 2 of #4 injector
113 Light Blue AAC valve signal (Auxiliary Air Control), connect to pin 3 of AAC/FICD subharness
114 -
115 -
116 Black Injector ground, connect to ground