Toyota Venza manuals

Toyota Venza: Lost Communication with Gateway Module (MS Bus) (U1002)

Toyota Venza Service Manual / Networking / Can Communication System / Lost Communication with Gateway Module (MS Bus) (U1002)

DESCRIPTION

  • The main body ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to the CAN MS bus.
  • When the main body ECU receives a response signal from the ECUs connected to the CAN MS bus, the main body ECU recognizes and memorizes that the ECU is connected to the CAN MS bus. Based on this memorized data, the main body ECU monitors for malfunctions in the ECUs connected to the CAN MS bus when communicating with those ECUs. If the main body ECU cannot receive response signals from the ECUs that have been memorized as those connected to the CAN MS bus, the main body ECU determines that a malfunction exists.

DTC No.

DTC Detection Condition

Trouble Area

U1002

Main body ECU cannot receive signals from all ECUs that have been memorized as those connected to the CAN MS bus.

  • Open or short in CAN MS bus main wire or connector
  • Open or short in CAN MS bus branch wire or connector
  • Power back door ECU*1
  • Back door closer ECU*2
  • Outer mirror control ECU assembly (for Driver side)
  • Outer mirror control ECU assembly (for Front passenger side)
  • Position control ECU and switch assembly
  • Main body ECU (driver side junction block)
  • CAN No. 4 junction connector
  • CAN No. 5 junction connector
  • *1: w/ Power back door system
  • *2: w/ Back door closer system (w/o power back door system)

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

  • Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.
  • Turn the ignition switch off before inspecting CAN bus wires for a ground short.
  • After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.
  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT:

  • Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE

1.

CHECK CAN MS BUS WIRE

(a) Turn the ignition switch off.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Result

L27-1 (CANH) - L27-2 (CANL)

Ignition switch off

54 to 69 Ω

Below 54 Ω:

Short circuit between bus lines

70 Ω or more:

Open circuit in a main bus line

L27-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω:

CANH ground short

L27-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Below 200 Ω:

CANL ground short

Text in Illustration

*1

Component with harness connected

(CAN No. 4 Junction Connector)

*2

Earth Terminal

*3

DLC3


(c) Disconnect the cable from the negative (-) battery terminal.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Result

L27-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Below 6 kΩ:

CANH +B short

L27-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Below 6 kΩ:

CANL +B short

Result

Proceed to

OK

A

Open in CAN main bus line

B

  • Short circuit between bus lines
  • Ground short
  • +B short

C


A

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)


C

GO TO STEP 6


B

2.

CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 4 J/C - CAN NO. 5 J/C)

(a) Disconnect the CAN No. 4 junction connector (L27).

Text in Illustration

*1

Rear view of wire harness connector

(to CAN No. 4 Junction Connector)

*2

Earth Terminal

*3

Red

*4

White


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L27-1 (CANH) - L27-2 (CANL)

Ignition switch off

108 to 132 Ω


OK

REPLACE CAN NO. 4 J/C


NG

3.

CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 5 J/C - CAN NO. 4 J/C)

(a) Reconnect CAN No. 4 junction connector (L27).

(b) Disconnect the CAN No. 5 junction connector (D77).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

Red

*4

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D77-1 (CANH) - D77-2 (CANL)

Ignition switch off

108 to 132 Ω


NG

REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 4 J/C)


OK

4.

CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (CAN NO. 5 J/C - MAIN BODY ECU)

(a) Disconnect the CAN No. 5 junction connector (D73).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

Sky Blue

*4

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D73-1 (CANH) - D73-2 (CANL)

Ignition switch off

108 to 132 Ω


OK

REPLACE CAN NO. 5 J/C


NG

5.

CHECK FOR OPEN IN CAN MS BUS MAIN WIRE (MAIN BODY ECU - CAN NO. 5 J/C)

(a) Reconnect the No. 5 junction connector (D73).

(b) Disconnect the main body ECU connector (D48).

Text in Illustration

*1

Front view of wire harness connector:

(to Main Body ECU)


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D48-16 (CANP) - D48-15 (CANN)

Ignition switch off

108 to 132 Ω


OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)


NG

REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (MAIN BODY ECU - CAN NO. 5 J/C)

6.

CHECK FOR SHORT IN CAN BUS WIRE (CAN NO. 4 J/C)

(a) Turn the ignition switch off.

(b) Disconnect the CAN No. 4 junction connector (L27).

Text in Illustration

*1

Rear view of wire harness connector

(to CAN No. 4 Junction Connector)

*2

Earth Terminal

*3

DLC3

*4

Red

*5

White


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

L27-1 (CANH) - L27-2 (CANL)

Ignition switch off

108 to 132 Ω

Inspection for open or short circuit between bus line

L27-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

L27-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

L27-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

L27-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.

Result

Proceed to

OK (w/ Power back door system)

A

OK (w/ Back door closer system)

B

NG

C


B

GO TO STEP 9


C

GO TO STEP 11


A

7.

CHECK FOR SHORT IN CAN MS BUS WIRES (POWER BACK DOOR ECU - CAN NO. 4 J/C)

(a) Reconnect the CAN No. 4 junction connector (L27).

(b) Disconnect the power back door ECU connector.

Text in Illustration

*1

Front view of wire harness connector

(to Power Back Door ECU)


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

L20-6 (MPX1) - L20-5 (MPX2)

Ignition switch off

54 to 69 Ω

Inspection for open or short circuit between bus lines

L20-6 (MPX1) - L20-11 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

L20-5 (MPX2) - L20-11 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

L20-6 (MPX1) - L20-10 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

L20-5 (MPX2) - L20-10 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE MULTIPLEX NETWORK DOOR ECU (POWER BACK DOOR ECU)


NG

8.

CHECK CAN MS BUS BRANCH WIRE (POWER BACK DOOR ECU)

(a) Disconnect the CAN No. 4 junction connector (L28).

Text in Illustration

*1

Rear view of wire harness connector

(to CAN No. 4 Junction Connector)

*2

Earth Terminal

*3

Pink

*4

White


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

L20-6 (MPX1) - L20-5 (MPX2)

Ignition switch off

1 MΩ or higher

Inspection for open or short circuit between bus lines

L20-6 (MPX1) - L20-11 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

L20-5 (MPX2) - L20-11 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

L20-6 (MPX1) - L20-10 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

L20-5 (MPX2) - L20-10 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short


Text in Illustration

*5

Front view of wire harness connector:

(to Power Back Door ECU)

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE CAN NO. 4 J/C


NG

REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (POWER BACK DOOR ECU)

9.

CHECK FOR SHORT IN CAN MS BUS WIRES (BACK DOOR CLOSER ECU - CAN NO. 4 J/C)

(a) Reconnect the CAN No. 4 junction connector (L27).

(b) Disconnect the back door closer ECU connector.

Text in Illustration

*1

Front view of wire harness connector

(to Back Door Closer ECU)


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

L21-11 (MPX1) - L21-12 (MPX2)

Ignition switch off

54 to 69 Ω

Inspection for open or short circuit between bus lines

L21-11 (MPX1) - L21-3 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

L21-12 (MPX2) - L21-3 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

L21-11 (MPX1) - L21-16 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

L21-12 (MPX2) - L21-16 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE MULTIPLEX NETWORK DOOR ECU (BACK DOOR CLOSER ECU)


NG

10.

CHECK CAN MS BUS BRANCH WIRE (BACK DOOR CLOSER ECU)

(a) Disconnect the CAN No. 4 junction connector (L29).

Text in Illustration

*1

Rear view of wire harness connector

(to CAN No. 4 Junction Connector)

*2

Earth Terminal

*3

Pink

*4

White


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

L21-11 (MPX1) - L21-12 (MPX2)

Ignition switch off

1 MΩ or higher

Inspection for open or short circuit between bus lines

L21-11 (MPX1) - L21-3 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

L21-12 (MPX2) - L21-3 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

L21-11 (MPX1) - L21-16 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

L21-12 (MPX2) - L21-16 (ECUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

Text in Illustration

*5

Front view of wire harness connector

(to Back Door Closer ECU)

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.



OK

REPLACE CAN NO. 4 J/C


NG

REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (BACK DOOR CLOSER ECU)

11.

CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - CAN NO. 4 J/C)

(a) Reconnect the CAN No. 4 junction connector (L27).

(b) Disconnect the CAN No. 5 junction connector (D77).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

DLC3

*4

Red

*5

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D77-1 (CANH) - D77-2 (CANL)

Ignition switch off

108 to 132 Ω

Inspection for open or short circuit between bus line

D77-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D77-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D77-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D77-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


NG

REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (CAN NO. 5 J/C - CAN NO. 4 J/C)


OK

12.

CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - POSITION CONTROL ECU AND SWITCH ASSEMBLY)

(a) Disconnect the CAN No. 5 junction connector (D76).

(b) Reconnect the CAN No. 5 junction connector (D77).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

DLC3

*4

Green

*5

Red

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D76-1 (CANH) - D76-2 (CANL)

Ignition switch off

200 Ω or higher

Inspection for open or short circuit between bus line

D76-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D76-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D76-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D76-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


NG

GO TO STEP 16


OK

13.

CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side))

(a) Disconnect the CAN No. 5 junction connector (D75).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

DLC3

*4

Blue

*5

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D75-1 (CANH) - D75-2 (CANL)

Ignition switch off

200 Ω or higher

Inspection for open or short circuit between bus line

D75-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D75-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D75-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D75-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


NG

GO TO STEP 17


OK

14.

CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side))

(a) Disconnect the CAN No. 5 junction connector (D74).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

DLC3

*4

Pink

*5

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D74-1 (CANH) - D74-2 (CANL)

Ignition switch off

200 Ω or higher

Inspection for open or short circuit between bus line

D74-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D74-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D74-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D74-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


NG

GO TO STEP 18


OK

15.

CHECK FOR SHORT IN CAN MS BUS WIRES (CAN NO. 5 J/C - MAIN BODY ECU)

(a) Disconnect the CAN No. 5 junction connector (D73).

Text in Illustration

*1

CAN No. 5 Junction Connector

*2

Rear view of wire harness connector (to CAN No. 5 Junction Connector)

*3

DLC3

*4

Sky Blue

*5

White

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D73-1 (CANH) - D73-2 (CANL)

Ignition switch off

108 to 132 Ω

Inspection for open or short circuit between bus line

D73-1 (CANH) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D73-2 (CANL) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D73-1 (CANH) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D73-2 (CANL) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE CAN NO. 5 J/C


NG

GO TO STEP 19

16.

CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (POSITION CONTROL ECU AND SWITCH ASSEMBLY)

(a) Reconnect the CAN No. 5 junction connector (D76).

(b) Disconnect the position control ECU and switch assembly connectors (T10 and T11).

Text in Illustration

*1

Front view of wire harness connector

(to Position Control ECU and Switch Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

T11-8 (CANP) - T11-7 (CANN)

Ignition switch off

54 to 69 Ω

Inspection for open or short circuit between bus line

T11-8 (CANP) - T10-1 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

T11-7 (CANN) - T10-1 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

T11-8 (CANP) - T10-6 (+B)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

T11-7 (CANN) - T10-6 (+B)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY


NG

REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - CAN NO. 5 J/C)

17.

CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Driver Side))

(a) Reconnect the CAN No. 5 junction connector (D75).

(b) Disconnect the outer mirror control ECU assembly connector (I13).

Text in Illustration

*1

Front view of wire harness connector

(to Outer Mirror Control ECU Assembly (for Driver Side))


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

I13-9 (CANP) - I13-8 (CANN)

Ignition switch off

54 to 69 Ω

Inspection for open or short circuit between bus line

I13-9 (CANP) - I13-7 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

I13-8 (CANN) - I13-7 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

I13-9 (CANP) - I13-6 (CPUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

I13-8 (CANN) - I13-6 (CPUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FOR DRIVER SIDE)


NG

REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR DRIVER SIDE))

18.

CHECK FOR SHORT IN CAN MS BUS BRANCH WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY (for Front Passenger Side))

(a) Reconnect the CAN No. 5 junction connector (D74).

(b) Disconnect the outer mirror control ECU assembly connector (H13).

Text in Illustration

*1

Front view of wire harness connector

(to Outer Mirror Control ECU Assembly (for Front Passenger Side))


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

H13-9 (CANP) - H13-8 (CANN)

Ignition switch off

54 to 69 Ω

Inspection for open or short circuit between bus line

H13-9 (CANP) - H13-7 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

H13-8 (CANN) - H13-7 (GND)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

H13-9 (CANP) - H13-6 (CPUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

H13-8 (CANN) - H13-6 (CPUB)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE)


NG

REPAIR OR REPLACE CAN MS BUS BRANCH WIRE OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE) - CAN NO. 5 J/C)

19.

CHECK FOR SHORT IN CAN MS BUS WIRES (MAIN BODY ECU)

(a) Reconnect the CAN No. 5 junction connector (D73).

(b) Disconnect the main body ECU connector (D48).

Text in Illustration

*1

Front view of wire harness connector

(to Main Body ECU)

*2

DLC3

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Purpose

D48-16 (CANP) - D48-15 (CANN)

Ignition switch off

108 to 132 Ω

Inspection for open or short circuit between bus line

D48-16 (CANP) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANH ground short

D48-15 (CANN) - D1-4 (CG)

Ignition switch off

200 Ω or higher

Inspection for CANL ground short

D48-16 (CANP) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANH +B short

D48-15 (CANN) - D1-16 (BAT)

Cable disconnected from negative (-) battery terminal

6 kΩ or higher

Inspection for CANL +B short

HINT:

It is only necessary to perform the inspection in the above table for the result (open or short circuit) that was obtained in the Check CAN MS Bus Wire inspection.

Find the necessary inspection from the Purpose column that matches the result in the Result column from the Check CAN MS Bus Wire inspection.


OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)


NG

REPAIR OR REPLACE CAN MS BUS MAIN WIRE OR CONNECTOR (MAIN BODY ECU - CAN NO. 5 J/C)

Lost Communication with Gateway Module (Power Management1) (U1002)
DESCRIPTION The power management control ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to the CAN No. 2 bus ...

Lost Communication with Gateway Module (Power Management2) (U1002)
DESCRIPTION The power management control ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to the power managem ...

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