Segment display of the fuel gauge does not change

1. Segment display of the fuel gauge does not change diagnostics

1. Pre-check and visual inspection

1) Check the remaining amount of fuel in the fuel tank.

2) Check for any interference from aftermarket electronic components such as two-way radios or lights.

Turn OFF or remove any aftermarket electronic components to ensure that there is no influence on inspections or operations.

2. Components inspection

1) Inspect the fuel tank unit.

Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) fuel tank unit inspection".

Refer to "1.Engine 1C.Fuel System(4JJ3 without DPD) fuel tank unit inspection".

Refer to "1.Engine 1C.Fuel System(RZ4E-TC) fuel tank unit inspection".

If a malfunction is found in the fuel tank unit, replace it.

Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) fuel tank unit removal".

Refer to "1.Engine 1C.Fuel System(4JJ3 with DPD) fuel tank unit installation".

Refer to "1.Engine 1C.Fuel System(4JJ3 without DPD) fuel tank unit removal".

Refer to "1.Engine 1C.Fuel System(4JJ3 without DPD) fuel tank unit installation".

Refer to "1.Engine 1C.Fuel System(RZ4E-TC) fuel tank unit removal".

Refer to "1.Engine 1C.Fuel System(RZ4E-TC) fuel tank unit installation".

2) Inspect the instrument panel cluster.

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. instrument panel cluster diagnostics".

If a malfunction is found in the instrument panel cluster, replace it.

Caution

  • If the instrument panel cluster is replaced with a new one, write the vehicle information to the instrument panel cluster.

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. instrument panel cluster removal".

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. instrument panel cluster installation".

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. instrument panel cluster setting".

3. Circuit inspection

1) Check that the harnesses and connectors are normal.

Inspect for the following circuits for an open circuit, short, poor connections at the connectors, and abnormal conditions such as worn or bent harnesses.

  • Between the instrument panel cluster and the fuel tank unit

Caution

  • When checking the continuity between the harnesses, disconnect the battery negative terminal.

Refer to "201.General Information 14A.Service Information Guide Preliminary and post procedures".