Toyota Venza manuals

Toyota Venza: Back Door Entry Unlock Function does not Operate

DESCRIPTION

If the entry back door open function does not operate but the back door entry lock function operates, the communication between the vehicle and key is normal. As a faulty part, the back door open switch circuit (from the back door opener switch assembly (opener switch) to the certification ECU (smart key ECU assembly)) is suspected.

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

  • The smart key system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (See page ). Troubleshoot the smart
    key system (for entry function) after confirming that the communication system is functioning properly.
  • Confirm that another key is not in the cabin.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (ENTRY BACK DOOR OPEN FUNCTION)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Smart Key (Certification ECU (Smart Key ECU Assembly))

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

B-Dr Opening Operation

Back door opening Operation / Long, Twice, OFF

Customization status displayed

-

Result

Proceed to

Customize setting is LONG or TWICE.

A

Customize setting is OFF.

B


B

PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters)


A

2.

CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to switch operation (See page ).


OK:

Door locks operate normally.


NG

GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table)


OK

3.

READ VALUE USING TECHSTREAM (BACK DOOR OPENER SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Data List.

(e) Read the Data List according to the display on the Techstream.

Smart Key (Certification ECU (Smart Key ECU Assembly))

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Tr/B-Door Unlock SW

Back door opener switch assembly (opener switch) / ON or OFF

ON: Back door opener switch assembly (opener switch) pushed

OFF: Back door opener switch assembly (opener switch) not pushed

-

OK:

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


OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


NG

4.

INSPECT BACK DOOR OPENER SWITCH ASSEMBLY

(a) Remove the back door opener switch assembly (See page ).



(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Switch Position

Specified Condition

2 (E) - 3 (UL)

Back door opener switch assembly (opener switch) not pushed (OFF)

10 kΩ or higher

2 (E) - 3 (UL)

Back door opener switch assembly (opener switch) pushed (ON)

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Back Door Opener Switch Assembly)


NG

REPLACE BACK DOOR OPENER SWITCH ASSEMBLY


OK

5.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BACK DOOR OPENER SWITCH)

(a) Disconnect the certification ECU (smart key ECU Assembly) connector.


(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D25-22 (TSW5) - R13-3 (UL)

Always

Below 1 Ω

D25-22 (TSW5) - Body ground

Always

10 kΩ or higher

R13-3 (UL) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Certification ECU (Smart Key ECU Assembly))

*2

Front view of wire harness connector

(to Back Door Opener Switch Assembly)


OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Entry Interior Alarm does not Sound
DESCRIPTION The smart key system uses the combination meter buzzer to perform various vehicle interior warnings. When the conditions for each warning are met, the certification ECU (smart key ECU ...

Back Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION When the back door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system; 2) outside electrical key oscillator ...

Other materials about Toyota Venza:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CONNECT TECHSTREAM (a) Connect the Techstream to the DLC3. (b) Start the engine and run it at idle. (c) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test. HINT: Refer to the Techstream operator's manu ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT REAR COMBINATION LIGHT ASSEMBLY (a) Disconnect the connector from the rear combination light assembly. (b) Measure the voltage according to the value(s) in ...

Pressure Control Solenoid "G" Performance (Shift Solenoid Valve SL4) (P2808)
DESCRIPTION The TCM uses the vehicle speed signal and signals from the transmission speed sensors (NC, NT) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). Then the TCM compares the actual gear with the shift schedule in the TCM memory to ...

© 2016-2019 Copyright www.tovenza.com

0.2431