Diagnosis

STEP 1

- Is the F-1 of the fuel tank unit connected securely?

YES
Go to STEP 2

NO
Connect the connector

STEP 2

1. Disconnect the connector of the fuel tank unit.
2. Connect a 3.4 watt bulb between the harness side connector F-1 terminal 3 and the ground of the fuel tank unit.
3. When the starter switch is turned on, does the fuel gauge needle fluctuate after about 90 seconds?

YES
Go to STEP 3

NO
Go to STEP 5

STEP 3

- Is there continuity between the fuel tank unit connector F-1 terminals 2 and 3?

YES
Go to STEP 4

NO
Replace the fuel tank unit.

STEP 4

1. Repair a poor connection at the connectors or an open circuit between the fuel tank unit and the gauge.
2. Is the action complete?

YES
Verify repair

STEP 5

- Is the circuit between the fuel gauge and the fuel tank unit normal?

YES
Go to STEP 6

NO
Repair poor connectors

STEP 6

- Is there a broken wire in the printed circuit of the meter assembly?

YES
Go to STEP 7

NO
Check the fuel gauge and replace it if necessary.

STEP 7

1. Replace the printed circuit board.
2. Is the action complete?

YES
Verify repair