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Inspection Procedure 8: The combination meter light does not illuminate normally or the multi-information display is not displayed normally.
 
 
cautionBefore replacing the combination meter, be sure to check that the power supply circuit, ground circuit, and communication circuit are normal.
 
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
When the signal from each ECU is received via the CAN communication, the combination meter illuminates the corresponding display light 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.
 
 
TROUBLESHOOTING HINTS
  • The combination meter may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Press the electric motor switch to turn on the power supply mode.
(3) Diagnose the CAN bus line.
(4) Press the electric motor switch to turn off the power supply mode.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), read the DTC.
Check if DTC is set in the combination meter.
Is the DTC set?
Troubleshoot the combination meter. Refer to .
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-IIISE), read the other system DTC.
Check again if the DTC is set in the ECM, ASC-ECU, ACC-ECU, EPS-ECU, KOS-ECU, OSS-ECU, SRS-ECU, ETACS-ECU, heater controller assembly (A/C-ECU), PHEV-ECU, battery management unit (BMU), on board charger/DC-DC converter, electric parking brake ECU, FCM/LDW/AHB-ECU and BSW-ECU.
Is the DTC set in the any of the above?
: Troubleshoot the engine (Refer to GROUP 13A - Troubleshooting ).
: Troubleshoot the ASC (Refer to GROUP 35C - Troubleshooting ).
: Troubleshoot the ACC (Refer to GROUP 17 - Troubleshooting ).
: Troubleshoot the EPS (Refer to GROUP 37 - Troubleshooting ).
: Troubleshoot the KOS (Refer to GROUP 42B - Troubleshooting ).
: Troubleshoot the OSS (Refer to GROUP 42B - Troubleshooting ).
: Troubleshoot the SRS (Refer to GROUP 52B - Troubleshooting ).
: Troubleshoot the ETACS-ECU (Refer to ).
: Troubleshoot the PHEV-ECU (Refer to GROUP 54Da - Troubleshooting ).
: Troubleshoot the BMU (Refer to GROUP 54Dc - Troubleshooting ).
: Troubleshoot the on board charger/DC-DC converter (Refer to GROUP 54Dd - Troubleshooting ).
: Troubleshoot the A/C (Refer to GROUP 55 - Troubleshooting ).
: Troubleshoot the Electric parking brake. Refer to GROUP 36 - Troubleshooting .
: Troubleshoot the FCM, LDW and automatic high beam system, refer to .
: Troubleshoot the BSW/RCTA. Refer to .
: Go to Step 4.
 
STEP 4. Using scan tool (M.U.T.-IIISE), perform Special Function
Using scan tool (M.U.T.-IIISE), select "Test" from the special function of the combination meter. Execute the following item to check the liquid crystal display.
  • Item No.2: LCD (AUTO)
  • Item No.5: Illumination (AUTO)
  • Item No.6: Indicator (AUTO)
Is the check result normal?
Go to Step 5.
Replace the combination meter.
 
STEP 5. Retest the system
Check that display lights or warning lamps are illuminated normally, or multi-information display is displayed normally.
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 (Refer to ).