B1206

NETWORKING: LIN COMMUNICATION SYSTEM: B1206: P/W Master Switch Communication Stop

DTC B1206 - P/W Master Switch Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the power window regulator master switch assembly and main body ECU stops for 10 seconds or more.






WIRING DIAGRAM





INSPECTION PROCEDURE
NOTE: When using the Techstream with the ignition switch off to troubleshoot:

Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
HINT: DTC B2325 is stored when the communication between the master switch and main body ECU stops.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MASTER SWITCH)





(a) Disconnect the H2 main body ECU connector.
(b) Disconnect the M2 power window regulator master switch assembly connector.
(c) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance:






Standard Voltage:





(d) Reconnect the main body ECU connector.
(e) Reconnect the power window regulator master switch assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (MASTER SWITCH - BATTERY AND BODY GROUND)





(a) Disconnect the M2 power window regulator master switch assembly connector.
(b) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance:






Standard Voltage:





(c) Reconnect the power window regulator master switch assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
(a) Temporarily replace the power window regulator master switch assembly with a new or normally functioning one Removal.
(b) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
NEXT -- Continue to next step.
4. CHECK FOR DTC
(a) Recheck for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPLACE MAIN BODY ECU
A -- END (MASTER SWITCH IS DEFECTIVE)