No Answer-Back [08/2015 - 08/2019]: Procedure

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   FR Door Lock Pos	Front RH side door lock position switch signal / UNLOCK or LOCK	UNLOCK: Front RH side door unlocked LOCK: Front RH side door locked	-
   FL Door Lock Pos	Front LH side door lock position switch signal / UNLOCK or LOCK	UNLOCK: Front LH side door unlocked LOCK: Front LH side door locked	-
   RR-Door Lock Pos SW	Rear RH side door lock position switch signal / ON or OFF	ON: Rear RH side door unlocked OFF: Rear RH side door locked	-
   RL-Door Lock Pos SW	Rear LH side door lock position switch signal / ON or OFF	ON: Rear LH side door unlocked OFF: Rear LH side door locked	-

   OK

   The Techstream should display as shown in the table according to door lock operation.

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (for Front RH Side)	B
   NG (for Front LH Side)	C
   NG (for Rear RH Side)	D
   NG (for Rear LH Side)	E

Result: 

B 

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Passenger Door Lock/Unlock Functions do not Operate) 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

C 

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door Lock/Unlock Functions do not Operate) 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

D 

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door RH Lock/Unlock Functions do not Operate) 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

E 

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Rear Door LH Lock/Unlock Functions do not Operate) 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

A 

See step  2

1. Check the wireless answer-back operation by the wireless door lock control function.
   RESULT
   
   

   Result	Proceed to
   Only hazard warning light answer-back does not occur	A
   Only wireless door lock buzzer answer-back does not occur	B

Result: 

B 

See step  6

Result: 

A 

See step  3

1. Check that the hazard warning lights flash continuously when the hazard warning signal switch is pressed.

   OK

   Hazard warning lights flash continuously.

Result: 

NG 

GO TO LIGHTING SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] )

Result: 

OK 

See step  4

1. Operate the Techstream according to the steps on the display and select "Active Test" (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Hazard	Turn signal flasher relay	ON/OFF	-

   OK

   The hazard warning lights can be turned on and off using the Techstream.

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

See step  5

1. Disconnect the F11 flasher connector.
2. Disconnect the F9 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F11-12 (HAZ) - F9-3 (HAZ)	Always	Below 1 Ω
   F11-12 (HAZ) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Operate the Techstream according to the steps on the display and select "Active Test" (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   MAIN BODY
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Wireless Buzzer	Wireless door lock buzzer	ON/OFF	-

   OK

   The wireless door lock buzzer can be turned on and off using the Techstream.

Result: 

NG 

See step  9

Result: 

OK 

See step  7

1. Temporarily replace the main body ECU with a new or normally functioning one (Refer to REMOVAL [08/2015 - 08/2019] ).

Result: 

NEXT 

See step  8

1. Check that the wireless door lock buzzer sounds by operating the wireless door lock function.

   OK

   Wireless door lock buzzer sounds.

Result: 

OK 

END (MAIN BODY ECU IS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

1. Disconnect the A5 buzzer connector.
2. Remove the main body ECU (Refer to REMOVAL [08/2015 - 08/2019] ).
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A5-1 - A-21 (BZR)	Always	Below 1 Ω
   A5-2 - Body ground	Always	Below 1 Ω
   A5-1 - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

1. Temporarily replace the wireless door lock buzzer with a new or normally functioning one (Refer to REMOVAL [08/2015 - ] ).

Result: 

NEXT 

See step  11

1. Check that the wireless door lock buzzer sounds by operating the wireless door lock function.

   OK

   Wireless door lock buzzer sounds.

Result: 

OK 

END (WIRELESS DOOR LOCK BUZZER IS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

(Refer to REMOVAL [08/2015 - 08/2019] )