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DTC P0A4A: Motor speed fails
 
 
 
 
MONITOR EXECUTION
  • Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Drive motor position sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • REMCU power supply voltage is 8 volts to 16 volts.
Judgment Criterion
  • Change of the revolution speed is more than 10,000 rpm for 1 second.
 
 
OBD-II DRIVE CYCLE PATTERN
  • Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4 .
 
 
PROBABLE CAUSES
  • Malfunction of the REMCU
  • Malfunction of the rear motor assembly
  • Malfunction of the rear transaxle assembly

 
 
DIAGNOSIS
Required Special Tools
  • MB991223: Wiring harness set
  • MB992006: Extra fine probe
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the DTC is set.
Check if the DTC P0A45 is set in the REMCU.
Is the DTC set?
Carry out troubleshooting for the DTC P0A45 (Refer to ). Then go to Step 3.
Go to Step 2.
 
STEP 2. Check the rear motor assembly.
Drive the vehicle to check whether there is abnormal sound or rotation trouble in the rear motor.
Is the check result normal?
Replace the REMCU (Refer to ). Then go to Step 3.
Replace the rear motor/rear transaxle assembly (Refer to ). Then go to Step 3.
 
STEP 3. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4 .
(2) Check the DTC.
Is the DTC set?
Retry the troubleshooting.
The inspection is complete.