DTC B2323: Rear Door RH ECU Communication Stop: Procedure

1. Remove the instrument panel junction block assembly. Refer to REMOVAL .
   Fig 1: Inspecting Instrument Panel Junction Block Assembly Connector Terminals

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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
   2A-27 (LIN2) - MB-16 (LIN2)	Always	Below 1 Ω
   2A-27 (LIN2) - Body ground	Always	10 kΩ or higher

   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   6 

OK: Go to next step 

1. Disconnect the P4 power window regulator motor assembly (for rear RH side) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2A-27 (LIN2) - P4-9 (LIN)	Always	Below 1 Ω
   2A-27 (LIN2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   P4-2 (B) - Body ground	Power switch off	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P4-1 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the power window regulator motor assembly (for rear RH side). Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for DTCs.

   OK

   DTC B2323 is not output.

NG → See step   7 

OK → END (POWER WINDOW REGULATOR MOTOR ASSEMBLY WAS DEFECTIVE)