Automatic transmission fluid temperature warning light inoperative (AWR6B45)

1. Transmission control system check

Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) diagnostic system check-transmission controls".

2. Automatic transmission fluid temperature warning light illumination check

1) Turn ON the ignition switch.

2) Check the automatic transmission fluid temperature warning light. Does the automatic transmission fluid temperature warning light illuminate?

Yes

Go to Intermittent conditions of automatic transmission.

Refer to "206.Transmission, Transaxle 19D.Symptom(AWR6B45) Intermittent conditions of automatic transmission".

No

=>Go to Fuse inspection.

3. Fuse inspection

1) Turn OFF the ignition switch.

2) Inspect the METER(+B) 10A fuse for a blowout. Is the result normal?

Refer to "LHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Inspection for open circuit in instrument panel cluster power supply circuit.

No

Replace the fuse. If the fuse blows out again, repair the short to ground in the circuits relating to the METER(+B) 10A fuse.

=>Go to Repair verification.

4. Inspection for open circuit in instrument panel cluster power supply circuit

1) Turn OFF the ignition switch.

2) Disconnect the instrument panel cluster harness connector (B7).

3) Connect a test lamp between the ignition power supply circuit of the instrument panel cluster harness connector (pin 2 of B7) and the body ground.

Refer to "LHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

4) Turn ON the ignition switch. Does the test lamp illuminate?

Yes

=>Go to Inspection for open circuit in instrument panel cluster ground circuit.

No

Repair the open circuit or high resistance in the ignition power supply circuit between the METER(IG1) 5A fuse and the instrument panel cluster (pin 2 of B7).

=>Go to Repair verification.

5. Inspection for open circuit in instrument panel cluster ground circuit

1) Connect a test lamp between the battery power supply circuit and the ground circuit of the instrument panel cluster harness connector (pins 1 and 40 of B7). Does the test lamp illuminate?

Refer to "LHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Instrument panel cluster harness connector inspection.

No

Repair the open circuit or high resistance in the ground circuit between the instrument panel cluster (pin 4 of B7) and the body ground.

=>Go to Repair verification.

6. Instrument panel cluster harness connector inspection

1) Inspect for poor connections at the instrument panel cluster harness connector (pins 1, 2, and 40 of B7). Is the result normal?

Refer to "LHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Combination Meter" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Instrument panel cluster replacement.

No

Repair the connections as necessary.

=>Go to Repair verification.

7. Instrument panel cluster replacement

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".

Procedure completion

=>Go to Repair verification.

8. Repair verification

1) Reconnect all of the disconnected fuses and harness connectors.

2) Turn ON the ignition switch.

3) Check the automatic transmission fluid temperature warning light. Does the automatic transmission fluid temperature warning light illuminate?

Yes

The system is normal.

No

=>Go to Fuse inspection.