We’ll be covering all RB series engines and the RB ECU Pinout for each one of them, according to engine or Skyline trim. For those looking for wiring diagrams, refer to the chart at the bottom of the article for RB wiring into Nissan 240s.
Everything from the RB20 to the RB26 will be covered in this writeup, please submit any questions to sales@prostreetonline.com
1989-1994 Nissan Skyline R32 GTS-T
Power and Relays
| Wire # | Name | Signal Type |
| 59 | Control Unit Power Supply | Power |
| 16 | ECCS Relay | Power Relay |
| 18 | Fuel Pump Relay | Power |
Engine Inputs
| Pin # | Name | Signal Type |
| 53 | Vehicle Speed Sensor | Speed |
| 56 | Throttle Sensor Output | 0-5 volts |
| 27 | Air Flow Meter Intake Signal | khz |
| 7 | Tachometer Speed Signal | Speed |
Engine VITALS
| Pin # | Name | Signal Type |
| 23 | Knock Sensor (Cyl 1-3) | +0 Value |
| 24 | Knock Sensor (Cyl 4-6) | +0 Value |
| 28 | Engine Temp | Analog |
Engine Swap Essentials
| Pin # | Name | Signal Type |
| 60 | Ground | Ground |
| 51 | Crank Angle Sensor | 120 Deg Signal |
| 52 | Crank Angle Sensor | 1 Deg Signal |
| 50 | ECU Ground | Analog |
| 10 | Ignition Ground | Ground |
| 32 | Monitor and Check Lamp | Analog |
1995-1996 NISSAN SKYLINE R33 Series 1
| Wire # | Name | Signal Type |
| 49 | Control Unit Power Supply | Power |
| 16 | ECU Relay | Power Relay |
| 18 | Fuel Pump Relay | Power |
ENGINE INPUTS
| Pin # | Name | Signal Type |
| 53 | Vehicle Speed Sensor | Speed |
| 56 | Throttle Sensor Output | 0-5 volts |
| 27 | Air Flow Meter Intake Signal | khz |
| 7 | Tachometer Speed Signal | Speed |
ENGINE VITALS
| Pin # | Name | Signal Type |
| 23 | Knock Sensor (Cyl 1-3) | +0 Value |
| 24 | Knock Sensor (Cyl 4-6) | +0 Value |
| 28 | Engine Temp | Analog |
ENGINE SWAP ESSENTIALS
| Pin # | Name | Signal Type |
| 60 | Ground | Ground |
| 51 | Crank Angle Sensor | 120 Deg Signal |
| 52 | Crank Angle Sensor | 1 Deg Signal |
| 50 | ECU Ground | Analog |
| 10 | Ignition Ground | Ground |
| 44 | Neutral Switch Signal | Analog |
1995-1996 NISSAN SKYLINE R33 SERIES 2
POWER AND RELAYS
| Wire # | Name | Signal Type |
| 59 | Control Unit Power Supply | Power |
| 16 | ECU Relay | Power Relay |
| 18 | Fuel Pump Relay | Power |
ENGINE INPUTS
| Pin # | Name | Signal Type |
| 53 | Vehicle Speed Sensor | Speed |
| 38 | Throttle Sensor Signal | 0-5 volts |
| 41 | Cam Position Sensor | 120 Deg Signal |
| 42 | Cam Position Sensor | 1 Deg Signal |
ENGINE VITALS
| Pin # | Name | Signal Type |
| 23 | Knock Sensor (Cyl 1-3) | +0 Value |
| 24 | Knock Sensor (Cyl 4-6) | +0 Value |
| 27 | MAF Signal | Analog |
ENGINE SWAP ESSENTIALS
| Pin # | Name | Signal Type |
| 60 | Ground | Ground |
| 51 | Crank Angle Sensor | 120 Deg Signal |
| 52 | Crank Angle Sensor | 1 Deg Signal |
| 50 | ECU Ground | Analog |
| 10 | Ignition Ground | Ground |
| 44 | Neutral Switch Signal | Analog |
1989-1998 NISSAN SKYLINE R32 – R34 RB26DETT
| Wire # | Name | Signal Type |
| 59 | Control Unit Power Supply | Power |
| 49 | ECU Power | Power |
| 58 | Battery Power | Power |
ENGINE INPUTS
| Pin # | Name | Signal Type |
| 53 | Vehicle Speed Sensor | Speed |
| 38 | Throttle Sensor Signal | 0-5 volts |
| 18 | Engine Coolant | Temp |
| 16 | Airflow Signal | Karman |
ENGINE VITALS
| Pin # | Name | Signal Type |
| 23 | Knock Sensor (Cyl 1-3) | +0 Value |
| 24 | Knock Sensor (Cyl 4-6) | +0 Value |
| 27 | MAF Signal – Rear | Analog |
ENGINE SWAP ESSENTIALS
| Pin # | Name | Signal Type |
| 60 | Ground | Ground |
| 51 | Crank Angle Sensor | 120 Deg Signal |
| 52 | Crank Angle Sensor | 1 Deg Signal |
| 50 | ECU Ground | Analog |
| 10 | Ignition Ground | Ground |
| 44 | Neutral Switch Signal | Analog |
Keep in mind if you are swapping in a RB25DET that you will need to pay particular attention to the series of your motor.
Series 1 RB25DET’s put the igniter on top of the motor, mounted by 4 bolts to the spark plug cover.
If you own a series 1 or 2 and have the incorrect ECU, you can convert the 2 by wiring in your ignitor however it’s far easier just to source the right ECU.
Damage to your ECU capacitors can occur if you are not careful with your RB25DET. For more wiring information and how-to’s on the RB, check out our How To Wire a RB25DET into a S14.