[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
23 -AUTOMATIC TRANSMISSION > 23A-CVT > TROUBLESHOOTING<S-AWC><S-AWC> > DIAGNOSIS CODE PROCEDURES > CODE NO. C2101 BATTERY VOLTAGE MALFUNCTION (HIGH VOLTAGE)
Code No.C2101: Battery Voltage Malfunction (High Voltage)
 
 
 
 
OPERATION
AWC-ECU power supply is provided from the battery via ETACS-ECU.
 
 
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when the AWC-ECU power supply voltage and the actuator power supply voltage are 18 V or more.
 
 
PROBABLE CAUSES
  • Malfunction of charging system
  • Loose battery terminal
  • Damaged harness wires and connectors
  • Malfunction of AWC-ECU
  • ETACS-ECU malfunction

 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE other system diagnosis code.
Check the ETACS diagnosis code (Refer to GROUP 54A - Troubleshooting ).
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.
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 .
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 .
Is the check result normal?
Go to Step 5.
Replace the battery. Then go to Step 5.
 
STEP 5. Voltage measurement at AWC-ECU connector
Disconnect the connector, and measure the voltage between AWC-ECU connector terminal BATT and earth at the wiring harness side.
OK: System voltage
Is the check result normal?
Go to Step 8.
Go to Step 6.
 
STEP 6. Check of short circuit in BATT line between AWC-ECU connector and ETACS-ECU connector.
Is the check result normal?
Go to Step 7.
Repair the connector(s) or wiring harness.
 
STEP 7. M.U.T.-IIISE data list.
Check the following data list (Refer to ).
Item No.48: Battery voltage
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ).
 
STEP 8. M.U.T.-IIISE data list.
Check the following data list (Refer to ).
Item No.48: Battery voltage
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the AWC-ECU (Refer to ).