| Pin Function Diagrams 740/940 4 cylinder B230F 1989-94 REGINA EFI with Rex-I Ignition |
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Updated: December 26, 2025
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Page 1 |
| Page 2 The fuel pump relay shown below requires a coil tachometer signal from the EZK ICU pin 17 to the ECU pin 1 to activate a signal for the relay. More about this can be found in the Fuel Pump and Fuel Pump Relay Page.  |
Page 3 |
| Page 4 The fuel pump relay shown in another diagram above requires a coil tachometer signal from the ICU pin 17 below to the ECU pin 1, which is used by the ECU to activate a signal for the fuel pump relay. The ICU below receives the engine speed signal from the Crank Position Sensor. More about the Fuel Pump Relay functions can be found in the Fuel Pump and Fuel Pump Relay Page.  |
