Table of Contents
Advertisement
18
Test Procedures
TEST PROCEDURE 20 – Fuel Level Sending Unit
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 resistance test.
1.
If necessary, see Testing Basics.
2.
Disconnect the battery.
3.
Disconnect the fuel pump connector from the top of the fuel pump module.
4.
Check the resistance between pin (3) and pin (4) terminals in module.
Description
1. Fuel Pump Positive (+)
2. Fuel Pump Negative (–)
3. Sending Unit Positive (+)
4. Sending Unit Negative
(–) Black Wire
3031
Figure 18-20 Fuel Pump Module Terminals
5.
The following resistance readings (in ohms) should be obtained depending on the position of the float inside
the fuel tank. The resistance reading will vary according to the exact position of the float. The chart below may
be used as a guideline to determine if the fuel level sending unit is operating correctly. Make sure the float
is at the surface of the fuel in the tank.
Page 18-34
2019 Carryall 550 Maintenance and Service Manual
1
Wire Color
Red/White
Black/White
Orange/Black
Black
GASOLINE VEHICLE - TROUBLESHOOTING
AND ELECTRICAL SYSTEM
Advertisement
Table of Contents
Troubleshooting
