DESCRIPTION
This DTC is stored when LIN communication between the power window regulator master switch assembly and main body ECU (multiplex network body ECU) stops for 10 seconds or more.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1206 |
No communication between power window regulator master switch assembly and main body ECU (multiplex network body ECU) for 10 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
INSPECT DRIVER SIDE JUNCTION BLOCK |
(a) Remove the driver side junction block (See page
).
(b) Remove the main body ECU (multiplex network body ECU) from the driver side junction block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1D-13 - MB-16 (LIN2) |
Always |
Below 1 Ω |
*a |
Component without harness connected (Driver Side Junction Block) |
- |
- |
HINT:
This inspection is to check the LIN line in the driver side junction block that connects the wire harness to the built-in main body ECU (multiplex network body ECU).
NG | ![]() |
REPLACE DRIVER SIDE JUNCTION BLOCK |
|
2. |
CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK - POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY) |
(a) for Double Cab
(1) Disconnect the 1D driver side junction block connector.
(2) Disconnect the P18 power window regulator master switch assembly connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1D-13 - P18-6 (LIN1) |
Always |
Below 1 Ω |
1D-13 or P18-6 (LIN1) - Body ground |
Always |
10 kΩ or higher |
(b) for Access Cab
(1) Disconnect the 1D driver side junction block connector.
(2) Disconnect the P23 power window regulator master switch assembly connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1D-13 - P23-17 (LIN1) |
Always |
Below 1 Ω |
1D-13 or P23-17 (LIN1) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH - POWER SOURCE CIRCUIT) |
(a) for Double Cab
(1) Disconnect the P18 power window regulator master switch assembly connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
P18-3 (B) - P18-1 (GND) |
Always |
11 to 14 V |
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
P18-1 (GND) - Body ground |
Always |
Below 1 Ω |
(b) for Access Cab
(1) Disconnect the P23 power window regulator master switch assembly connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
P23-11 (B) - P23-12 (GND) |
Always |
11 to 14 V |
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
P23-12 (GND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY |
(a) Replace the power window regulator master switch assembly.
|
5. |
CHECK DTC OUTPUT |
(a) Clear the DTCs (See page ).
(b) Recheck for DTCs.
OK:
DTC B1206 is not output.
OK | ![]() |
END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WAS DEFECTIVE) |
NG | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX BODY ECU) |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
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