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DTC P1E48: OR line voltage [BMU (SUB)]
 
 
 
 
TROUBLE JUDGMENT
Check Condition
  • The power supply mode of the electric motor switch is ON, or the main drive lithium-ion battery starts to be charged.
Judgment Criterion
  • The abnormal BMU (SUB) power supply voltage is detected.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Not available
 
 
PROBABLE CAUSES
  • The 12V starter battery is failed.
  • The installation of the 12V starter battery terminal is failed.
  • Open circuits of BMU (SUB) power supply circuit, short circuits to ground or damage; poor contact of connector
  • The leakage-of-electricity control is failed.
noteWhen using the higher voltage from the outside of the vehicle than the voltage of the 12V starter battery.
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
Check whether the BMU (SUB) set a DTC P1ADF or P1E49.
Is the DTC set?
Carry out troubleshooting for the DTC P1ADF or P1E49. (Refer to <P1ADF>, <P1E49>).
Go to Step 2.
 
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
Check whether the PHEV-ECU set a DTC P0A09 which is related to the on board charger/DC-DC converter.
Is the DTC set?
Carry out troubleshooting for the DTC P0A09. (Refer to GROUP 54Da - PHEV-ECU - Diagnostic Trouble Code Procedures ).
Go to Step 3.
 
STEP 3. 12V starter battery condition check
Check the installation status of the 12V starter battery terminal.
Is the check result normal?
Go to Step 4.
Repair.
 
STEP 4. Check 12V starter battery
Check 12V starter battery (Refer to GROUP 54A - 12V starter battery, On-vehicle Service, Battery Test ).
Is the check result normal?
Remove the battery tray cover (Refer to ). Replace the sub-battery management unit [BMU (SUB)] on main drive lithium-ion battery (Refer to ). Then, assemble the main drive lithium-ion battery assembly (Refer to ).
Replace the 12V starter battery.