Check Harness Between Fuel Sub Level Sensor And Combination Meter

Disconnect the connector from combination meter.

Measure the resistance between fuel sub level sensor harness connector terminal and combination meter harness connector terminal.

Connector & terminal 

(R59) No. 1 - (i12) No. 2: 

Is the resistance less than 10 O?

YES. Go to  CHECK HARNESS BETWEEN FUEL LEVEL SENSOR AND FUEL SUB LEVEL SENSOR  . 

NO 

Repair the wiring harness.