Toyota 4Runner manuals

Toyota 4Runner: All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder

Toyota 4Runner Service Manual / Vehicle Interior / Door Lock / Power Door Lock Control System / All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch, and key-linked switch signals from the front door lock. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

Since the power door lock control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

PROCEDURE

1.

CHECK DOOR LOCK OPERATION

(a) Check the door lock operation.

Result

Result

Proceed to

No doors can be locked using multiplex network master switch

A

No doors can be locked using door control switch

B

No doors can be locked using key-linked switch

C

No doors can be locked using tail gate control switch*

D

  • *: w/o Smart Key System

A

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


C

GO TO STEP 5


D

GO TO STEP 8

B

2.

READ VALUE USING TECHSTREAM (DOOR CONTROL SWITCH)

(a) Use the Data List to check if the door control switch is functioning properly (See page ).


Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Door Lock SW-Lock

Door control switch lock signal / ON or OFF

ON: Lock side of door control switch pushed

OFF: Lock side of door control switch not pushed

-

Door Lock SW-Unlock

Door control switch unlock signal / ON or OFF

ON: Unlock side of door control switch pushed

OFF: Unlock side of door control switch not pushed

-

OK:

On tester screen, each item changes between ON and OFF according to above chart.


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

3.

INSPECT DOOR CONTROL SWITCH ASSEMBLY

(a) Remove the door control switch (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (L) - 3 (E)

Lock

Below 1 Ω

4 (L) - 3 (E)

Off

10 kΩ or higher

2 (UL) - 3 (E)

Unlock

Below 1 Ω

2 (UL) - 3 (E)

Off

10 kΩ or higher


NG

REPLACE DOOR CONTROL SWITCH ASSEMBLY

OK

4.

CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH ASSEMBLY - MAIN BODY ECU)

(a) Disconnect the g2 door control switch connector.

(b) Disconnect the F9 main body ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

g2-2 (UL) - F9-10 (UL1)

Always

Below 1 Ω

g2-4 (L) - F9-9 (L1)

Always

Below 1 Ω

g2-3 (E) - Body ground

Always

Below 1 Ω

g2-2 (UL) - Body ground

Always

10 kΩ or higher

g2-4 (L) - Body ground

Always

10 kΩ or higher


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.

READ VALUE USING TECHSTREAM (KEY-LINKED SWITCH)

(a) Use the Data List to check if the door key-linked switch is functioning properly (See page ).


Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Door Key SW-Lock

Driver side door key-linked switch lock signal / ON or OFF

ON: Driver side door key cylinder turned to lock position

OFF: Driver side door key cylinder not turned to lock position

-

D Door Key SW-UL

Driver side door key-linked switch unlock signal / ON or OFF

ON: Driver side door key cylinder turned to unlock position

OFF: Driver side door key cylinder not turned to unlock position

-

OK:

On tester screen, each item changes between ON and OFF according to above chart.


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

6.

INSPECT FRONT DOOR LOCK ASSEMBLY LH (KEY-LINKED SWITCH)

(a) Remove the front door lock LH (See page
).

Text in Illustration


Lock

Unlock

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

9 (L) - 7 (E)

Lock

Below 1 Ω

9 (L) - 7 (E)

Off

10 kΩ or higher

10 (UL) - 7 (E)

Unlock

Below 1 Ω

10 (UL) - 7 (E)

Off

10 kΩ or higher


NG

REPLACE FRONT DOOR LOCK ASSEMBLY LH

OK

7.

CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the I5 door lock connector.

(b) Remove the main body ECU connector. (See page )


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I5-10 (UL) - F9-24 (UL3)

Always

Below 1 Ω

I5-9 (L) - F9-11 (L2)

Always

Below 1 Ω

I5-7 (E) - Body ground

Always

Below 1 Ω

I5-10 (UL) - Body ground

Always

10 kΩ or higher

I5-9 (L) - Body ground

Always

10 kΩ or higher


OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

READ VALUE USING TECHSTREAM (TAIL GATE CONTROL SWITCH)

(a) Use the Data List to check if the tail gate control switch and back door are functioning properly (See page ).


Back Door P/W

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Key Switch Operation Locked

Tail gate control switch signal / ON or OFF

ON: Back door key cylinder turned to lock position

OFF: Back door key cylinder not turned

-

Key Switch Operation Unlocked

Tail gate control switch signal / ON or OFF

ON: Back door key cylinder turned to unlock position

OFF: Back door key cylinder not turned

-

Back Door Courtesy Switch

Back door courtesy switch signal / ON or OFF

ON: Back door open

OFF: Back door closed

-

Result

Proceed to

OK

A

NG (Key Switch Operation Locked or Key Switch Operation Unlocked)

B

NG (Back Door Courtesy Switch)

C


A

REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W)


C

GO TO "Only Back Door cannot be Opened"

B

9.

INSPECT TAIL GATE CONTROL SWITCH ASSEMBLY

(a) Remove the tail gate control switch (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (L) - 3 (E)

Lock position

Below 1 Ω

1 (L) - 3 (E)

Unlock position

10 kΩ or higher

2 (UL) - 3 (E)

Unlock position

Below 1 Ω

2 (UL) - 3 (E)

Lock position

10 kΩ or higher


NG

REPLACE TAIL GATE CONTROL SWITCH ASSEMBLY

OK

10.

CHECK HARNESS AND CONNECTOR (TAIL GATE CONTROL SWITCH ASSEMBLY - MULTIPLEX NETWORK DOOR ECU)

(a) Disconnect the W4 tail gate control switch connector.

(b) Disconnect the W10 multiplex network door ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

W4-1 (L) - W10-16 (BKL)

Always

Below 1 Ω

W4-2 (UL) - W10-15 (BKUL)

Always

Below 1 Ω

W4-3 (E) - W10-8 (KEYE)

Always

Below 1 Ω

W4-1 (L) - Body ground

Always

10 kΩ or higher

W4-2 (UL) - Body ground

Always

10 kΩ or higher


OK

REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Trouble Cod ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any p ...

Other materials about Toyota 4Runner:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (a) Detach the bracket claw and remove the bracket. (b) Remove the 2 bolts and drive gear. 2. REMOVE SUNSHADE TRIM SUB-ASSEMBLY Tex ...

Steering Angle Sensor Internal Circuit (C1433)
DESCRIPTION Steering angle sensor signals are sent to the skid control ECU via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor zero point malfunction diagnostic functio ...

© 2016-2020 | www.to4runner.net

0.0062