Lexus ES manuals

Lexus ES: Position Initialization Incomplete (B2343)

DESCRIPTION

This DTC is stored when the sliding roof ECU (sliding roof drive gear assembly) has not been initialized.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2343

Position Initialization Incomplete

Sliding roof ECU (sliding roof drive gear assembly) has not been initialized.

Sliding roof ECU (Sliding roof drive gear assembly)

WIRING DIAGRAM

Refer to DTC B2341.

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CAUTION / NOTICE / HINT

NOTICE:

  • If the sliding roof ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear assembly) must be initialized.

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  • The panoramic moon roof system uses the CAN and LIN communication system. First, confirm that there are no malfunctions in the CAN and LIN communication system. Refer to How to Proceed with Troubleshooting.

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  • DTC B2343 is stored in the sliding roof ECU (sliding roof drive gear assembly).

HINT:

If DTC B2342 and B2343 are output simultaneously, perform troubleshooting for DTC B2342 first.

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Body Electrical > Sliding Roof > Clear DTCs

(b) Check for DTCs.

Body Electrical > Sliding Roof > Trouble Codes

OK:

DTC B2343 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

(a) Check that the sliding roof ECU (sliding roof drive gear assembly) can be initialized.

Click here

OK:

Sliding roof ECU (sliding roof drive gear assembly) can be initialized.

NG

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

OK

3.

CHECK SLIDING ROOF OPERATION

(a) Check the sliding roof auto operation function.

Click here

OK:

Auto operation function operates normally.

NG

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

OK

4.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Body Electrical > Sliding Roof > Clear DTCs

(b) Check for DTCs.

Body Electrical > Sliding Roof > Trouble Codes

OK:

DTC B2343 is not output.

OK

END (MALFUNCTION DUE TO INITIALIZATION FAILURE)

NG

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

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 Precaution

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