[Previous][Next]
DTC P1AC4: Arithmetic Processing
 
 
cautionWhenever ECU is replaced, ensure that the CAN bus lines are normal.
 
 
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 RAM data error is detected.
 
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Not available
 
 
PROBABLE CAUSE
  • The battery management unit (BMU) is failed.
 
 
 
 
DIAGNOSIS
Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.