Door Courtesy Switch Circuit: 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)
   
   

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

   Normal conditions listed above are displayed.

NG → See step   2 

OK → See step   4 

1. Inspect the front door courtesy switch. Refer to INSPECTION , rear door courtesy switch. Refer to INSPECTION , and back door courtesy switch. Refer to INSPECTION .

   OK

   Door courtesy switches are normal.

NG → REPLACE DOOR COURTESY SWITCH 

OK: Go to next step 

Fig 1: Checking Harness And Connector (Instrument Panel Junction Block - Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the E63 main body ECU connector.
2. Disconnect the 2A and 2E instrument panel junction block connectors.
3. Disconnect the P1 door lock assembly connector.
4. Disconnect each door courtesy switch connector.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Driver Side 

   Front Passenger Side 

   Rear LH Side 

   Rear RH Side 

   Back Door 

   Tester Connection	Condition	Specified Condition
   2A-21 (DCTY) - L18-1	Always	Below 1 Ω
   L18-1 - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   2E-20 (PCTY) - M15-1	Always	Below 1 Ω
   M15-1 - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   E63-13 (LCTY) - L19-1	Always	Below 1 Ω
   L19-1 - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   2E-19 (RCTY) - M16-1	Always	Below 1 Ω
   M16-1 - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   2A-7 (BCTY) - P1-4	Always	Below 1 Ω
   P1-4 - Body ground	Always	10 kΩ or higher
   P1-3 - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

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