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DTC P1033: ELC.P.lock initial learning
 
 
cautionBefore replacing the ECU, ensure that the communication circuit is normal.
 
 
DTC SET CONDITIONS
The PHEV-ECU sets this DTC when the initial learning of the electric parking lock is unsuccessful.
 
 
 
PROBABLE CAUSES
  • Malfunction of the electrical parking actuator.
  • Malfunction of the electrical parking driver unit.
  • Malfunction of the PHEV-ECU.
  • Front transaxle assembly (foreign material trapped).
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
Check whether the electrical parking driver unit related DTC is set in the PHEV-ECU.
Is the DTC set?
Troubleshoot for the relevant DTC.
Go to Step 2.
 
STEP 2. Using scan tool (M.U.T.-IIISE), check the data list. (electrical parking driver unit)
Check that the following data list display contents are normal (Refer to GROUP 22A - Data List Reference Table ).
Data list
  • Item No.10: Range learning fail flag
 
Check conditionNormal condition
The parking lock statusNormalOFF
AbnormalON
Is the check result normal?
Go to Step 7.
Go to Step 3.
 
STEP 3. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
(1) Remove foreign materials from the front transaxle assembly.
(2) Erase the DTC.
(3) Turn off the power supply mode of the electric motor switch.
(4) Turn on the power supply mode of the electric motor switch [Illuminate the READY (ready to drive) indicator].
(5) Operate the selector lever and the electric parking switch from N to P and vice versa.
(6) Repeat steps (2) and (3) at least three times. Then check whether the PHEV-ECU sets the DTC.
Is the DTC set?
Go to Step 4.
The inspection is complete.
 
STEP 4. Using scan tool (M.U.T.-IIISE), check the data list. (Electrical parking driver unit)
Check that the following data list display contents are normal (Refer to GROUP 22A - Data List Reference Table ).
Data list
  • Item 10: Range learning fail flag
 
Check conditionNormal condition
The parking lock statusNormalOFF
AbnormalON
Is the check result normal?
Go to Step 7.
To erase the stored (learnt) value, disconnect the negative terminal of the 12 volts starter battery once and reconnect it. Then go to Step 5.
 
STEP 5. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.
(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch [Illuminate the READY (ready to drive) indicator].
(4) Operate the selector lever and the electric parking switch from N to P to N and vice versa.
(5) Repeat steps (2) to (4) three times. Then check whether the PHEV-ECU sets the DTC.
Is the DTC set?
Replace the electrical parking actuator (Refer to GROUP 22A - Electrical Parking Actuator ). Then go to Step 6.
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
 
STEP 6. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch [Illuminate the READY (ready to drive) indicator].
(4) Operate the selector lever and the electric parking switch from N to P to N and vice versa.
(5) Repeat steps (2) to (4) three times. Then check whether the PHEV-ECU sets the DTC.
Is the DTC set?
Replace the electrical parking driver unit (Refer to GROUP 22A - Electrical Parking Drive Unit ). Then go to Step 7.
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
 
STEP 7. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.
(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch [Illuminate the READY (ready to drive) indicator].
(4) Operate the selector lever and the electric parking switch from N to P to N and vice versa.
(5) Repeat steps (2) to (4) three times. Then check whether the PHEV-ECU sets the DTC.
Is the DTC set?
Replace the PHEV-ECU (Refer to ). Then go to Step 8.
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
 
STEP 8. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.
(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch [Illuminate the READY (ready to drive) indicator].
(4) Operate the selector lever and the electric parking switch from N to P to N and vice versa.
(5) Repeat steps (2) to (4) three times. Then check whether the PHEV-ECU sets the DTC.
Is the DTC set?
Replace the front transaxle assembly (Refer to GROUP 22A - Front Transaxle Assembly ).
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).