Inspection Procedure

1. Connect the intelligent tester (with CAN VIM) to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Clear the DTCs.
4. Select the following menu items: BODY / BODY ECU / DTC.
5. Result DTCs.

   Result 

   RESULT REFERENCE
   
   

   Display (DTC Output)	Proceed to
   B2321	A
   No DTC output	B

B: SYSTEM IS OK 

A: Go TO NEXT STEP. 

1. Connect the intelligent tester (with CAN VIM) to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Select the following menu items: BODY / BODY ECU / DATA LIST / COM D-DOOR MTR.
4. Read the indication displayed on the tester.

   Main body ECU 

   MAIN BODY ECU CHECK
   
   

   Item	Measurement Item / Display (Range)	Normal Condition
   COM D-DOOR MTR	Connection status between power window regulator motor assembly (driver door) and main body ECU / OK or Stop	OK: Connection Stop: No connection

   OK: OK is displayed on the intelligent tester screen. 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

NG: Go TO NEXT STEP. 

1. Disconnect the H4 motor connector.
2. Disconnect the E15 junction block connector.
3. Measure the resistance of the wire harness side connectors.
   Fig 1: Identifying H4 Motor Connector And E15 Junction Block Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   H4-9 (LIN) - E15-23 (LIN2)	Below 1 Ω
   H4-9 (LIN) or E15-23 (LIN2) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go TO NEXT STEP. 

1. Connect the intelligent tester (with CAN / VIM) to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Clear the DTCs.
4. Check whether DTC B2321 recurs 10 seconds or more after the ignition switch is turned ON.

   OK: No DTC is output. 

NG: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) 

OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)