Inspection Procedure 9: The combination meter lamp does not illuminate normally or the multi-information display is not displayed normally.

caution

Before replacing the combination meter, be sure to check that the power supply circuit, earth circuit, and communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM

When the signal from each ECU is received via the CAN communication, the combination meter illuminates the corresponding display lamp or warning lamp, or has the multi-information display to display corresponding information.
If the lamps do not illuminate or the multi-information display does not display normally, the wiring harness and connector(s) in the CAN bus lines, each ECU (that sends a signal) or the combination meter may have a problem.

PROBABLE CAUSES

Malfunction of combination meter
Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 2.

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting

STEP 2. M.U.T.-III diagnosis code

Check again if the diagnosis code is set in the combination meter.

Q. Is the diagnosis code set?

Refer to

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code

Check again if the diagnosis code is set in the engine-ECU, CVT-ECU, ABS-ECU <Vehicles without ASC>, ASC-ECU <Vehicles with ASC>, EPS-ECU, KOS-ECU, KOS&OSS-ECU, SRS-ECU, ETACS-ECU, laser radar (FCM-ECU) and A/C-ECU.

Q. Is the diagnosis code set in the any of the above?

Set in the engine. : Troubleshoot the engine control system. GROUP 13A - Diagnosis Code Chart

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Set in the CVT-ECU. : Troubleshoot the CVT. Refer to GROUP 23A - Diagnosis code chart

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Set in the ABS-ECU. <Vehicles without ASC> : Troubleshoot the ABS. Refer to GROUP 35B - Troubleshooting

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Set in the ASC-ECU. <Vehicles with ASC> : Troubleshoot the ASC. Refer to GROUP 35C - Troubleshooting

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Set in the EPS-ECU. : Troubleshoot the EPS. Refer to GROUP 37 - Troubleshooting

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Set in the KOS&OSS-ECU. : Troubleshoot the KOS. Refer to GROUP 42B - Troubleshooting

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Set in the SRS-ECU. : Troubleshoot the SRS. Refer to GROUP 52B - Troubleshooting.

Set in the ETACS-ECU. : Troubleshoot the ETACS.

Set in the laser radar (FCM-ECU). : Troubleshoot the Forward Collision Mitigation System (Low speed range) (FCM-LS). Refer to

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Set in the A/C-ECU. : Troubleshoot the A/C. Refer to GROUP 55B - Troubleshooting

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The diagnosis code is not set.

: Go to Step 4.

STEP 4. M.U.T.-III Special Function

Using M.U.T.-III, select "Test" from the special function of the combination meter. Execute the following item to check the liquid crystal display.

Item 2: LCD(AUTO)
Item 5: Illumination (AUTO)
Item 6: Indicator (AUTO)

Q. Is the check result normal?

Go to Step 5.

Replace the combination meter.

STEP 5. Retest the system

Check that display lamps or warning lamps are illuminated normally, or multi-information display is displayed normally.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction

Replace the combination meter.