B Series Truck L4-2184cc 2.2L 2200 (1988)
Fuel Pump Control Unit: Testing and Inspection
Fig. 5 Testing Fuel Pump Control Unit
1.
Use a voltmeter to check terminal voltages Fig. 5.
Fig. 6 Fuel Pump Control Unit Voltage Table
2.
Refer to Fig. 6 for correct voltages.
3.
If only the (B) terminal is not correct replace the fuel pump control unit.
4.
If the others are not correct check the wiring and related parts.
