Back Door Entry Lock and Unlock Functions do not Operate: Procedure

1. When the door control switch of the master switch assembly is operated, check that the locked doors unlock.

   OK

   Door locks operate normally.

NG → See step   10 

OK: Go to next step 

1. Check if the power back door is equipped on the vehicle.
   RESULT
   
   

   Result	Proceed to
   w/ Power Back Door System	A
   w/o Power Back Door System	B

B → See step   4 

A: Go to next step 

1. When the power back door switch is operated, check that the power back door open and close.

   OK

   Power back door is open and close.

   RESULT
   
   

   Result	Proceed to
   NG	A
   OK	B

B → See step   5 

A → See step   11 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Enter the following menus: Body Electrical / Main Body / Data List.
4. Read the Data List according to the display on the Techstream.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Back Lock Pos switch	Back door lock position switch signal / ON or OFF	ON: Back door unlocked OFF: Back door locked	-

   OK

   On the Techstream screen, the display changes between ON and OFF as shown in the chart above.

NG → See step   13 

OK: Go to next step 

1. Using the Techstream, read the Data List.
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Back Door Handle SW	Back door opener switch / ON or OFF	ON: Back door opener switch pushed OFF: Back door opener switch not pushed	-

   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Tr/B-Door Lock SW	Back door lock switch / ON or OFF	ON: Back door lock switch pushed OFF: Back door lock switch not pushed	-

   OK

   "ON" (switch is pushed) and "OFF" (switch is not pushed) appears on the screen.

NG → See step   9 

OK: Go to next step 

1. Disconnect the E29 ECU connector.
   Fig 1: Identifying E29 ECU And K23 Antenna Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the K23 antenna connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E29-31 (CLG8) - K23-1 (CLG5)	Always	Below 1 Ω
   E29-32 (CG8B) - K23-2 (CLGB)	Always	Below 1 Ω
   E29-31 (CLG8) - Body ground	Always	10 kΩ or higher
   E29-32 (CG8B) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the electrical key antenna (for outside luggage compartment). Refer to REMOVAL .

NEXT: Go to next step 

1. Check that the entry functions operate normally.

   OK

   Entry functions operate normally.

NG → REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

OK → END (ELECTRICAL KEY ANTENNA [for Outside Luggage Compartment] IS DEFECTIVE) 

1. Disconnect the S7 switch connector.
   Fig 2: Identifying S7 Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   S7-2 (L) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   12