Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. Read the display on the Techstream.

   Main Body (Main Body ECU) 

   MEASUREMENT ITEM/RANGE CHART
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D door Courtesy SW	Driver's door courtesy switch signal/ON or OFF	ON: Driver side door is open OFF: Driver side door is closed	-
   P door Courtesy SW	Passenger's door courtesy switch signal/ON or OFF	ON: Front passenger side door is open OFF: Front passenger door is closed	-
   RR door Courtesy SW	Rear door courtesy switch signal/ ON or OFF	ON: Rear right passenger side door is open OFF: Rear right passenger side door is closed	-
   RL door Courtesy SW	Rear door courtesy switch signal/ ON or OFF	ON: Rear left passenger side door is open OFF: Rear left passenger side door is closed	-
   Back door Courtesy SW	Back door courtesy switch signal/ ON or OFF	ON: Back door is open OFF: Back door is closed	-

   OK: 

   Condition sign can be displayed. 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

NG: Go to next step 

1. Remove the door courtesy light switch.
2. Measure the resistance of the switch.

   Standard resistance: 

   Front LH, Front RH, Rear LH, Rear RH, Back Door 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   1 - Body ground	OFF	10 kΩ or higher
   	ON	Below 1 Ω

   Fig 1: Inspecting Courtesy Light Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE DOOR COURTESY LIGHT SWITCH 

OK: Go to next step 

Fig 2: Locating IA, IC And ID Instrument Panel Junction Block Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the courtesy light switch.
2. Disconnect the IA, IC and ID instrument panel junction block connectors.
3. Disconnect the E15 main body ECU connector.
4. Measure the: resistance of the wire harness side connectors.

   Standard resistance: 

   Front door LH 

   FRONT DOOR LH
   
   

   Tester Connection	Condition	Specified Condition
   IA-21 (DCTY) - Body ground	Front LH door is opened	Below 1 Ω
   	Front LH door is closed	10 kΩ or higher

   Front door RH 

   FRONT DOOR RH
   
   

   Tester Connection	Condition	Specified Condition
   IC-14 (PCTY) - Body ground	Front RH door is opened	Below 1 Ω
   	Front RH door is closed	10 kΩ or higher

   Rear door RH 

   REAR DOOR RH
   
   

   Tester Connection	Condition	Specified Condition
   ID-7 (RRCY) - Body ground	Rear RH door is opened	Below 1 Ω
   	Rear RH door is closed	10 kΩ or higher

   Rear door LH 

   REAR DOOR LH
   
   

   Tester Connection	Condition	Specified Condition
   E15-8 (LCTY) - Body ground	Rear LH door is opened	Below 1 Ω
   	Rear LH door is closed	10 kΩ or higher

   Back door 

   BACK DOOR
   
   

   Tester Connection	Condition	Specified Condition
   IA-7 (BCTY) - Body ground	Back door is opened	Below 1 Ω
   	Back door is closed	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

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