Inspection Procedure

1. Check for LIN communication system DTCs related to the power window control system (See DTC CHECK / CLEAR ).

   OK: LIN communication system DTCs are not output. 

NG: GO TO LIN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

OK: Go to next step 

1. Check the power window operation function after the engine switch is turned off (See FAIL-SAFE CHART  )

   Result 

   DTC RESULT REFERENCE
   
   

   Result	Proceed to
   Driver side door or front passenger side door is opened within 45 sec but power windows can still operate	A
   45 sec pass and power windows can still operate	B

B: REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) 

A: Go to next step 

1. Use the Data List to check if the main body ECU is functioning properly (See DATA LIST / ACTIVE TEST  ).

   Main Body 

   ITEM RANGE REFERENCE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door Courtesy SW	Driver side door courtesy switch signal / ON or OFF	ON: Driver door open OFF: Driver door closed	-
   P Door Courtesy SW	Front passenger side door courtesy switch signal / ON or OFF	ON: Front passenger door open OFF: Front passenger door closed	-

   OK: Techstream display changes according to above chart. 

NG: Go to step 4 

OK: REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) 

1. Open the driver side door and check that the map light illuminates (See OPERATION CHECK ).

   OK: Map light illuminates. 

2. Open the front passenger side door and check that the map light illuminates (See OPERATION CHECK ).

   OK: Map light illuminates. 

NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY  (See REMOVAL )

OK: REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)