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B1214





NETWORKING: MULTIPLEX COMMUNICATION SYSTEM: B1214,B1215: Short to B+ in Door System Communication Bus Malfunction
B1215 - Short to GND in Door System Communication Bus Malfunction

DESCRIPTION

* If a +B short circuit or body ground short circuit is detected on the door system communication bus (BEAN), BEAN is disabled and these DTCs are output.





* *1: w/ Seat Memory

* *2: w/ Auto Wiper

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH))

(a) Disconnect the J75 and RJ connectors.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (METAL TOP CONTROL ECU (SLIDING ROOF CONTROL ECU ASSEMBLY))
OK -- Continue to next step.

2. CHECK DTC OUTPUT (MULTIPLEX TILT AND TELESCOPIC ECU)

(a) Reconnect the J75 and RJ connectors.

(b) Disconnect the J28 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (WIRE HARNESS)

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Removal

3. CHECK DTC OUTPUT (WIRE HARNESS)

(a) Reconnect the J28 connector.

(b) Disconnect the RA connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH - MULTIPLEX TILT AND TELESCOPIC ECU)

4. CHECK DTC OUTPUT (METAL TOP CONTROL ECU (SLIDING ROOF CONTROL ECU ASSEMBLY))

(a) Reconnect the J75 and RJ connectors.

(b) Disconnect the Q36 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (WIRE HARNESS)

OK -- REPLACE METAL TOP CONTROL ECU (SLIDING ROOF CONTROL ECU ASSEMBLY) Removal

5. CHECK DTC OUTPUT (WIRE HARNESS)

(a) Disconnect the Q3 connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - MAIN BODY ECU LH)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU LH - METAL TOP CONTROL ECU)

6. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - MAIN BODY ECU LH)

(a) Reconnect the Q36 and Q3 connectors.





(b) Disconnect the LA and J55 connectors.

(c) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - MAIN BODY ECU LH)
OK -- Continue to next step.

7. CHECK DTC OUTPUT (MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH))

(a) Reconnect the J55 connector.

(b) Disconnect the Q3 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT
OK -- Continue to next step.

8. SYSTEM CHECK

(a) Reconnect the LA and Q3 connectors.

(b) Check the vehicle specification.

Result:





B -- CHECK DTC OUTPUT (FRONT CONTROLLER (ENGINE ROOM RELAY BLOCK NO. 2))
A -- Continue to next step.

9. CHECK DTC OUTPUT (RAIN SENSOR)

(a) Disconnect the R7 connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - RAIN SENSOR)

OK -- REPLACE RAIN SENSOR Removal

10. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - RAIN SENSOR)

(a) Disconnect the LD connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU LH - RAIN SENSOR)
OK -- Continue to next step.

11. CHECK DTC OUTPUT (FRONT POWER SEAT SWITCH LH (POSITION CONTROL ECU))

(a) Reconnect the LD and R7 connectors.

(b) Disconnect the U7 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - FRONT POWER SEAT SWITCH LH)

OK -- REPLACE FRONT POWER SEAT SWITCH LH (POSITION CONTROL ECU) Removal

12. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - FRONT POWER SEAT SWITCH LH)

(a) Disconnect the LJ connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU LH - FRONT POWER SEAT SWITCH LH)
OK -- Continue to next step.

13. CHECK DTC OUTPUT (OUTER MIRROR CONTROL ECU ASSEMBLY LH)

(a) Reconnect the LJ and U7 connectors.

(b) Disconnect the M10 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - OUTER MIRROR CONTROL ECU ASSEMBLY LH)

OK -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH Removal

14. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - OUTER MIRROR CONTROL ECU ASSEMBLY LH)

(a) Disconnect the LJ connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU LH - OUTER MIRROR CONTROL ECU ASSEMBLY LH)
OK -- Continue to next step.

15. CHECK DTC OUTPUT (FRONT CONTROLLER (ENGINE ROOM RELAY BLOCK NO. 2))

(a) Reconnect the LJ and M10 connectors.*1

*1: w/ Seat Memory

(b) Disconnect the 2F connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - FRONT CONTROLLER)

OK -- REPLACE FRONT CONTROLLER (ENGINE ROOM RELAY BLOCK NO. 2)

16. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH - FRONT CONTROLLER)

(a) Disconnect the LL and A30 connectors.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU LH - FRONT CONTROLLER)

OK -- REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH)

17. CHECK DTC OUTPUT

(a) Reconnect the LA and Q3 connectors.

(b) Disconnect the RJ and Q36 connectors.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (WINDSHIELD WIPER SWITCH ASSEMBLY)
OK -- Continue to next step.

18. CHECK DTC OUTPUT

(a) Reconnect the RJ and Q36 connectors.

(b) Disconnect the L17 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT

OK -- REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Removal

19. CHECK DTC OUTPUT

(a) Disconnect the Q36 connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- SYSTEM CHECK
OK -- Continue to next step.

20. CHECK DTC OUTPUT

(a) Reconnect the Q36 and L17 connectors.

(b) Disconnect the M17 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (WIRE HARNESS)

OK -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Removal

21. CHECK DTC OUTPUT (WIRE HARNESS)

(a) Disconnect the L17 connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER WINDOW MASTER SWITCH - METAL TOP CONTROL ECU)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER WINDOW SWITCH - POWER WINDOW MASTER SWITCH)

22. SYSTEM CHECK

(a) Reconnect the L17 and Q36 connectors.

(b) Check the vehicle specification.

Result:





B -- CHECK DTC OUTPUT (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
A -- Continue to next step.

23. CHECK DTC OUTPUT (FRONT POWER SEAT SWITCH RH (POSITION CONTROL ECU))

(a) Disconnect the T7 connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (OUTER MIRROR CONTROL ECU ASSEMBLY RH)

OK -- REPLACE FRONT POWER SEAT SWITCH RH (POSITION CONTROL ECU) Removal

24. CHECK DTC OUTPUT (OUTER MIRROR CONTROL ECU ASSEMBLY RH)

(a) Reconnect the T7 connector.

(b) Disconnect the L10 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

OK -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH Removal

25. CHECK DTC OUTPUT (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Reconnect the L10 connector.*1

*1: w/ Seat Memory

(b) Disconnect the P33 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK DTC OUTPUT (WIRE HARNESS)

OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

26. CHECK DTC OUTPUT (WIRE HARNESS)

(a) Disconnect the RJ connector.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CERTIFICATION ECU - POWER WINDOW REGULATOR SWITCH)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU RH - CERTIFICATION ECU)

27. CHECK DTC OUTPUT (WINDSHIELD WIPER SWITCH ASSEMBLY)

(a) Reconnect the RJ and Q36 connectors.

(b) Disconnect the J26 connector.

(c) Clear the DTC Multiplex Communication System.

(d) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - WINDSHIELD WIPER SWITCH ASSEMBLY)

OK -- REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Removal

28. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - WINDSHIELD WIPER SWITCH ASSEMBLY)

(a) Disconnect the J55 connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - WINDSHIELD WIPER SWITCH ASSEMBLY)
OK -- Continue to next step.

29. CHECK HARNESS AND CONNECTOR (GATEWAY ECU - WINDSHIELD WIPER SWITCH ASSEMBLY)

(a) Reconnect the J55 connector.





(b) Disconnect the J76 connector.

(c) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GATEWAY ECU - WINDSHIELD WIPER SWITCH ASSEMBLY)
OK -- Continue to next step.

30. CHECK HARNESS AND CONNECTOR (GATEWAY ECU - MAIN BODY ECU RH)

(a) Reconnect the J26 connector.





(b) Disconnect the J75 connector.

(c) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GATEWAY ECU - MAIN BODY ECU RH)
OK -- Continue to next step.

31. REPLACE POWER SOURCE CONTROL ECU

(a) Replace the power source control ECU Removal.

NEXT -- Continue to next step.

32. CHECK DTC OUTPUT

(a) Reconnect the J75 and J76 connectors.

(b) Clear the DTC Multiplex Communication System.

(c) Recheck for DTCs.

OK:

DTC B1214 or B1215 is not output.

NG -- REPLACE GATEWAY ECU Removal

OK -- END (POWER SOURCE CONTROL ECU WAS DEFECTIVE)
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