DIAGRAM 1: 1.6L 4A-FE (w/o MAF Sensor)

APPLIES TO: This fuel pump circuit wiring diagram applies to the following vehicles:
- 1.6L (4A-FE) Toyota Corolla (w/o MAF Sensor): 1989, 1990.
NOTE: The fuel pump circuit wiring diagram above includes the following circuits:
- Fuel Pump.
- In fuel tank.
- Circuit Opening Relay.
- Located under the center of the dash, next to the fuel injection computer.
- EFI Main Relay.
- In Junction Block (J/B) 2. This is the fuse/relay box located on the left inner fender in the engine compartment.
Fuel Pump Test: You can find the fuel pump test here:
DIAGRAM 2: 1.6L 4A-GE (w/ MAF Sensor)


APPLIES TO: This fuel pump circuit wiring diagram applies to the following vehicles:
- 1.6L (4A-GE) Toyota Corolla (w/ MAF Sensor): 1989, 1990.
NOTE: The fuel pump circuit wiring diagram above includes the following circuits:
- Fuel Pump.
- In fuel tank.
- MAF Sensor.
- The MAF sensor is a Vane Air Flow Sensor.
- Circuit Opening Relay.
- Located under the center of the dash, next to the fuel injection computer.
- EFI Main Relay.
- In Junction Block (J/B) 2. This is the fuse/relay box located on the left inner fender in the engine compartment.
Fuel Pump Test: You can find the fuel pump test here:
Other Fuel Pump Circuit Diagrams
You can find all available fuel pump circuit wiring diagrams here:
- Fuel Pump Circuit Wiring Diagram (1991 1.6L Toyota Corolla).
- Fuel Pump Circuit Wiring Diagram (1992 1.6L Toyota Corolla).
- Fuel Pump Circuit Wiring Diagram (1993 1.6L Toyota Corolla).
- Fuel Pump Circuit Wiring Diagram (1994-1995 1.6L Toyota Corolla).
- Fuel Pump Circuit Wiring Diagram (1996-1997 1.6L Toyota Corolla).
More 1.6L Toyota Corolla Tutorials
You can find a complete list of 1.6L Toyota Corolla tutorials and wiring diagrams in this index:
Here's a sample of the tutorials you'll find there:
- How To Test The Throttle Position Sensor (1989-1997 1.6L Toyota Corolla).
- How To Test Engine Compression (1989-1997 1.6L Toyota Corolla).
- How To Do A Cylinder Balance Test (1989-1997 1.6L Toyota Corolla).
- How To Test A Blown Head Gasket (1989-1997 1.6L Toyota Corolla).

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