DTC B2325: LIN Communication Bus Malfunction [08/2015 - ]: Procedure

1. Disconnect the K11 power window regulator master switch assembly connector.
2. Disconnect the K9 power window regulator motor assembly (for driver door) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K11-7 (LIN2) - K9-9 (LIN)	Always	Below 1 Ω
   K11-7 (LIN2) or K9-9 (LIN) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the power window regulator master switch assembly. Refer to REMOVAL [08/2015 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   7 (LIN2) - 6 (LIN1)	Always	Below 1 Ω
   7 (LIN2) or 6 (LIN1) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Power Window Regulator Master Switch Assembly)

NG → See step   11 

OK: Go to next step 

1. Remove the instrument panel junction block assembly. Refer to REMOVAL [08/2015 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
3. Measure the resistance according to the value(s) in the table below.

   HINT: 

   This inspection is to check the LIN line in the instrument panel junction block assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-30 (LIN2) - MB-16 (LIN2)	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   *b

   Component without harness connected (Instrument Panel Junction Block Assembly)

NG → See step   9 

OK: Go to next step 

1. Disconnect the J18 power window regulator motor assembly (for front passenger door) connector.
2. Disconnect the K11 power window regulator master switch assembly connector.
3. Disconnect the S4 sliding roof ECU (sliding roof drive gear sub-assembly)* connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3B-30 (LIN2) - K11-6 (LIN1)	Always	Below 1 Ω
   3B-30 (LIN2) - J18-9 (LIN)	Always	Below 1 Ω
   3B-30 (LIN2) - S4-11 (MPX1)*	Always	Below 1 Ω
   3B-30 (LIN2) - Body ground	Always	10 kΩ or higher
   K11-6 (LIN1) - Body ground	Always	10 kΩ or higher
   J18-9 (LIN) - Body ground	Always	10 kΩ or higher
   S4-11 (MPX1)* - Body ground	Always	10 kΩ or higher

   • *: w/ Sliding Roof System

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the K11 power window regulator master switch assembly connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2015 - ] .
3. After 10 seconds have elapsed, check if the trouble occurs again.
4. Check for DTCs again.

   Result

   Result	Proceed to
   DTC B2325 is output	A
   DTC B2325 is not output	B

B → See step   11 

A: Go to next step 

1. Disconnect the K9 power window regulator motor assembly (for driver door) connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2015 - ] .
3. After 10 seconds have elapsed, check if the trouble occurs again.
4. Check for DTCs again.

   Result

   Result	Proceed to
   DTC B2325 is output	A
   DTC B2325 is not output	B

B → See step   12 

A: Go to next step 

1. Disconnect the J18 power window regulator motor assembly (for front passenger door) connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2015 - ] .
3. After 10 seconds have elapsed, check if the trouble occurs again.
4. Check for DTCs again.

   Result

   Result	Proceed to
   DTC B2325 is output (w/ Sliding Roof System)	A
   DTC B2325 is output (w/o Sliding Roof System)	B
   DTC B2325 is not output	C

B → See step   14 

C → See step   13 

A: Go to next step 

1. Disconnect the S4 sliding roof ECU (sliding roof drive gear sub-assembly) connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR [08/2015 - ] .
3. After 10 seconds have elapsed, check if the trouble occurs again.
4. Check for DTCs again.

   Result

   Result	Proceed to
   DTC B2325 is output	A
   DTC B2325 is not output	B

B → See step   10 

A → See step   14