18
Test Procedures
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: PEDAL-START GAS VEHICLE
TEST PROCEDURE 21 – Fuel Pump
See General Warnings on page 1-1.
WARNING
• To avoid the possibility of fire or explosion, make sure the fuel tank cap is securely in place while
performing this test procedure.
NOTE:
This is a voltage and resistance test.
2
4
3
1
WIRE FUNCTION
WIRE COLOR
1. Fuel Pump Positive (+)
Red Wire
2. Fuel Pump Negative (–)
Brown Wire
3. Sending Unit Positive (+)
Orange/Black Wire
4. Sending Unit Negative
(–) Black Wire
Black Wire
3031
Figure 18-19
Fuel Pump Module Terminals
Voltage to Pump
1.
If necessary, see Testing Basics on page 18-15.
2.
Disconnect the 5-pin connector from the top of the fuel pump module.
3.
Check that battery voltage is present between ground and the red wire of the 5-pin connector immediately after
the key switch is placed in the ON position.
NOTE:
The fuel pump and low oil warning light operate for a few seconds when key switch is turned to the ON
position; it stops if no engine RPM is detected by the ECU.
4.
If no voltage, check key switch.
See Key Switch (Start Circuit) on page 18-25.
Pump
1.
If necessary, see Testing Basics on page 18-15.
2.
Disconnect battery.
See Disconnecting the Battery-Gasoline Vehicles on page 1-5.
3.
Disconnect the 5-pin connector from the top of the fuel pump module.
Page 18-38
2017 Carryall 500 and 700 Maintenance and Service Manual
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