ECU Pin Out MAC-10/MAC-11
Main ECU connector pin out, 35 pins.
When the ECU is installed in the car vertically, Pin 1 is the first pin on the right, closest to passenger door, i.e. towards the rear of the vehicle. (next to the connector release tab end). Pins 2-18 follow forward on the right side row. Pin 19 is the first pin on the left, with its position shifted slightly forward of Pin 1. Pins 20-35 follow forward on the left row.
With the ECU removed from the car and looking at the ECU at the connector end, with the metal mounting tab down and to your right. The ECU connector Pin 1 is first pin on the bottom row to the left, Pins 1-18 follow on the bottom row to the right, Pin 19 is first pin on the top row to the left, Pins 19-35 follow on the top row to the right.
1. Cold Start Valve
2. Ignition Module Ground
3. Charcoal Canister Filter solenoid (negative supply)
4. Decel Valve
5. N/C
6. Code wire, connected for Automatic Transmission cars
7. Tachometer
8. CIS Freq Valve
9. Ground
10. Coolant Sensor
11. RPM Sensor + (Y)
12. TDC signal -
13. TDC signal +
14. Over temp switch
15. Knock Sensor signal
16. Knock Sensor ground/shield
17. Boost Gauge
18. Ground
19. Waste Gate solenoid control
20. Idle Switch
21. Fuel Pump relay ground control
22. Ignition Module control signal
23. Intake sensor and Hall sensor ground return
24. Intake Air Temp Sensor
25. Hall Effect +12V supply
26. Full Throttle Switch
27. Hall Sensor signal
28. RPM/TDC shield wire
29. RPM return ground
30. O2 Sensor shield ground
31. Fault code light control (fuel pump fuse contact)
32. Brake Light Switch
33. O2 sensor output
34. California Code wire, connect for California vehicles
35. +12 Voltage from ignition switch
ECU Pin Out MAC-14
Main ECU connector pin out, 35 pins.
When the ECU is installed in the car vertically, Pin 1 is the first pin on the right, closest to passenger door, i.e. towards the rear of the vehicle. (next to the connector release tab end). Pins 2-18 follow forward on the right side row. Pin 19 is the first pin on the left, with its position shifted slightly forward of Pin 1. Pins 20-35 follow forward on the left row.
With the ECU removed from the car and looking at the ECU at the connector end, with the metal mounting tab down and to your right. The ECU connector Pin 1 is first pin on the bottom row to the left, Pins 1-18 follow on the bottom row to the right, Pin 19 is first pin on the top row to the left, Pins 19-35 follow on the top row to the right.
1. Cold Start Valve
2. Knock Sensor #2 Signal
3. Charcoal Canister Filter solenoid control signal
4. Decel Valve
5. Engine Control Lamp control (Tan connector)
6. T6F/4 Flash Code Connector W/BL
7. Tachometer
8. CIS Freq. Valve
9. Ground
10. Coolant Sensor
11. RPM Sensor signal
12. TDC Shield and ground
13. TDC Signal
14. Over temp switch
15. Knock Sensor #1 Signal
16. Knock Sensor ground/shield
17. Boost Gauge
18. Ground (O2 sensor)
19. Waste Gate solenoid control
20. Idle Switch
21. Fuel Pump relay control
22. Ignition Module control
23. Charcoal Canister shut off (small rear valve)
24. Intake Air Temp Sensor
25. Hall Effect +12V Supply
26. Full Throttle Switch
27. Hall Sensor timing signal
28. Tan diagnostic connector, upper terminal BL/Y wire
29. RPM Sensor Shield and ground.
30. O2 sensor signal
31. Blue Diagnostic Connector, upper pin Y/BK wire
32. Brake Light Switch
33. Black Diagnostic Connector, upper pin +12V BLK wire
34. Coding connector
35. +12V Ignition supply from Terminal 15