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DTC P33F0, P33F1, P33F2, P33F3, P33F4, P33F6, P33F7, P33F8, P33F9, P33FA: CMU Internal Fail
cautionWhenever ECU is replaced, ensure that the CAN bus lines are normal.
 
 
 
 
MONITOR EXECUTION
  • Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • battery management unit (BMU) power supply voltage is 8 volts to 16 volts.
  • Time after above conditions satisfy is more than 2 seconds.
Judgment Criterion
  • Unable to receive main drive lithium-ion battery module signals through the CAN bus line.
 
 
OBD-II DRIVE CYCLE PATTERN
  • Refer to GROUP 54Da - Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Not available
 
 
PROBABLE CAUSE
  • The cell monitoring unit (CMU) in the main drive lithium-ion battery is failed.
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check the data list. <CMU>
(1) Operate the electric motor switch with depressing the brake pedal and turn ON the power supply mode of electric motor switch.
(2) Select "CMU" from System select Screen of the scan tool (M.U.T.-IIISE).
(3) Select the "Special Function" from the main CMU screen.
(4) Select the "Reset" from the Special Function screen
(5) Select the "EEPROM Failure information" from the Test screen.
(6) Set scan tool (M.U.T.-IIISE) to the CMU data list (Refer to ).
  • Item No.29: Microcomputer reference voltage
  • Item No.30: IC reference voltage
  • Item No.80: EEPROM Fail (learning data read)
  • Item No.88: A/D conversion (Reference VOLT.)
OK: Normal
Is the check result normal?
Remove the battery tray cover (Refer to ). Replace the cell monitoring unit (CMU) corresponding to the diagnostic trouble code being set. Then, assemble the main drive lithium-ion battery assembly (Refer to ). Then go to Step 2.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
 
STEP 2. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle - Pattern 1 .
(2) Check if the DTC is set.
Is the DTC set?
Retry the troubleshooting.
The inspection is complete.