Code No.C2101: Power supply high voltage


OPERATION



DIAGNOSIS CODE SET CONDITIONS




  • Voltage between the battery and ETACS-ECU: More than 18 V

PROBABLE CAUSES



  • Malfunction of charging system
  • Loose battery terminal
  • Damaged harness wires and connectors
  • Malfunction of 4WD-ECU
  • ETACS-ECU malfunction

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code.
Check the ETACS diagnosis code (Refer to GROUP 54A - Troubleshooting ).

Q. Is the diagnosis code set?
Perform the relevant troubleshooting.
Go to Step 2.

STEP 2. Battery terminal check
Check that the battery terminal is not loose.

Q. Is the check result normal?
Go to Step 3.
Securely install the battery terminal. Then go to Step 3.

STEP 3. Check the charging system.
Refer to GROUP 16 - Charging System .

Q. Is the check result normal?
Go to Step 4.
Repair or replace the charging system component(s).

STEP 4. Check the battery.
Refer to GROUP 54A - Battery Test .

Q. Is the check result normal?
Go to Step 5.
Replace the battery. Then go to Step 5.

STEP 5. Voltage measurement at 4WD-ECU connector
Disconnect the connector, and measure the voltage between terminal BATT and body earth at the wiring harness side.
OK: System voltage

Q. Is the check result normal?
Go to Step 6.
Repair the defective connector or the wiring harness. Then go to Step 7.

STEP 6. M.U.T.-III data list.
Check the following data list (Refer to ).

  • Item No.31: Battery voltage (CAN input)

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the 4WD-ECU (Refer to ). Then go to Step 7.

STEP 7. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C2101 set?
Return to Step 1.
This diagnosis is complete.