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Inspection Procedure 5: The speedometer does not work (the other meters work).
 
 
cautionBefore replacing the combination meter, be sure to check that the power supply circuit, ground circuit, and communication circuit are normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
If only the speedometer does not operate, the ASC system and combination meter may have a problem.
 
 
TROUBLESHOOTING HINTS
  • The ASC-ECU may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
  • The combination meter may be defective
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-III), read the combination meter diagnostic trouble code
Check if DTC is stored in the combination meter.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check if DTC is stored.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC stored?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ). On completion, go to Step 7.
 
STEP 2. Using scan tool (M.U.T.-III), read the combination meter diagnostic trouble code
Check if DTC is stored in the combination meter.
Is the DTC stored?
Diagnose combination meter. Refer to . After diagnosing the combination meter, go to Step 7.
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-III), read the ASC diagnostic trouble code.
Check if DTC is stored in the ASC.
Is the DTC stored?
Troubleshoot the ASC. Refer to GROUP 35C - Troubleshooting .
Go to Step 4.
 
STEP 4. Using scan tool (M.U.T.-III), check data list
Check the vehicle speed signal data list of ASC system.
Item No.88: Vehicle speed (Refer to GROUP 35C, Data list reference table .)
Is the check result normal?
Go to Step 5.
Diagnose ASC system. (Refer to GROUP 35C, Troubleshooting .) After diagnosing the ASC system.
 
STEP 5. Using scan tool (M.U.T.-III), check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Conduct the actuator test of the combination meter.
  • Item 1: Speedometer
    • The speedometer operates up to the set position.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is the check result normally?
Go to Step 6.
Replace combination meter, then go to Step 7.
 
STEP 6. Check by scan tool (M.U.T.-III) "Special Function"
  • Item 4: Pointer (Refer to ).
Is the check result normal?
Go to Step 7.
Replace the combination meter, and then go to Step 7.
 
STEP 7. Retest the system.
Check that the speedometer works normally.
Is the check result normal?
The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to GROUP 00 / How to Cope with Intermittent Malfunction ).
Go to Step 1.