B2342

SLIDING ROOF: SLIDING ROOF SYSTEM: B2342: Switch Failure

DTC B2342 - Switch Failure

DESCRIPTION

This DTC is output when the sliding roof drive gear sub-assembly (sliding roof control ECU) detects that the OPEN, CLOSE, UP or DOWN switch in the roof console box assembly (sliding roof switch assembly) is stuck for 30 seconds or more.
NOTE: When the sliding roof drive gear sub-assembly is reinstalled or replaced, the sliding roof drive gear sub-assembly must be initialized.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (SLIDE OPEN AND TILT UP SWITCH)
(a) Use the Data List to check if the sliding roof switch assembly is functioning properly.

Slide Roof





OK:
The Techstream displays as shown in the table according to the operation of each switch.
NG -- INSPECT ROOF CONSOLE BOX ASSEMBLY (SLIDING ROOF SWITCH ASSEMBLY)
OK -- Continue to next step.
2. CHECK SLIDING ROOF FUNCTION
(a) Check the AUTO operation with the OPEN and UP switches.
OK:
AUTO operation operates normally with the OPEN and UP switches.
NG -- INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
OK -- Continue to next step.
3. RECHECK FOR DTC
(a) Delete the DTCs.
(b) Recheck for DTCs.
HINT: If DTCs are detected frequently, replace the ECU.

OK:
DTC is not output.
NG -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
OK -- END
4. INSPECT ROOF CONSOLE BOX ASSEMBLY (SLIDING ROOF SWITCH ASSEMBLY)





(a) Remove the roof console box assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE ROOF CONSOLE BOX ASSEMBLY (SLIDING ROOF SWITCH ASSEMBLY)
OK -- Continue to next step.
5. CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY)





(a) Disconnect the Q12 and Q1 connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
6. REPLACE ROOF CONSOLE BOX ASSEMBLY (SLIDING ROOF SWITCH ASSEMBLY)
(a) Replace the roof console box assembly.
NEXT -- Continue to next step.
7. RECHECK FOR DTC
(a) Delete the DTCs.
(b) Recheck for DTCs.
HINT: If DTCs are detected frequently, replace the ECU.

OK:
DTC is not output.
NG -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
OK -- END
8. INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
(a) Check that the sliding roof drive gear sub-assembly (sliding roof control ECU) can be initialized. Programming and Relearning
OK:
Sliding roof drive gear sub-assembly (sliding roof control ECU) can be initialized.
NG -- CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY)
OK -- Continue to next step.
9. CHECK SLIDING ROOF FUNCTION
(a) Check the AUTO operation with the OPEN and UP switches.
OK:
AUTO operation operates normally with the OPEN and UP switches.
NG -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
OK -- Continue to next step.
10. RECHECK FOR DTC
(a) Delete the DTCs.
(b) Recheck for DTCs.
HINT: If DTCs are detected frequently, replace the ECU.

OK:
DTC is not output.
NG -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)
OK -- END
11. CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY)





(a) Disconnect the Q12 and Q1 connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)