Disconnect the quick-connect fittings from the fuel pump.
Except KZ model: Using the tool, loosen the locknut (A), and remove the fuel pump assembly from the fuel tank.
KZ model: Remove the fuel pump assembly.
Measure the resistance between the No. 1 and No. 2 terminals with the float at E (EMPTY), 1/2 (HALF FULL), and F (FULL) positions. If you do not get the following readings, replace the fuel gauge sending unit.
Except KZ model:
NOTE: Remove the No. 9 BACK UP (10A) fuse from the under-hood fuse/relay box for at least 10 seconds after completing troubleshooting otherwise it may take up to 20 minutes for the fuel gauge to indicate the correct fuel level.