Networking. Dtc U1002 (Can Ms Bus) Lost Communication With Gateway Module (Main Body Ecu)

The main body ECU stores this DTC when no signals can be received from the ECUs that have been memorized as those 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.
If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [CAN branch wire]/CANL [CAN branch wire] of the ECU and/or sensor is open).

DTC Code	DTC Detection Condition	Trouble Area
U1002 (CAN MS BUS)	Lost communication with the gateway module (main body ECU).	MS bus circuit Windshield wiper ECU CAN branch wire or connector1 Position control ECU and switch CAN branch wire or connector2 Outer mirror control ECU assembly CAN branch wire or connector2 Multiplex tilt and telescopic ECU branch wire or connector3 Certification ECU (smart key ECU assembly) CAN branch wire or connector4 Power back door unit assembly (power back door ECU) CAN branch wire or connector5 No. 2 main body ECU CAN branch wire or connector5 Tire pressure warning ECU and receiver CAN branch wire or connector6 Main body ECU (cowl side junction block LH) CAN main wire or connector Combination meter assembly CAN main wire or connector Windshield wiper ECU1 Position control ECU and switch2 Outer mirror control ECU assembly2 Multiplex tilt and telescopic ECU3 Certification ECU (smart key ECU assembly)4 Power back door unit assembly (power back door ECU)5 No. 2 main body ECU5 Tire pressure warning ECU and receiver6 Main body ECU (cowl side junction block LH) Combination meter assembly No. 8 junction connector No. 9 junction connector No. 10 junction connector No. 2 CAN junction connector

*1: w/ Rain Sensor
*2: w/ Seat Memory
*3: w/ Power Tilt Power Telescopic Steering Column System
*4: w/ Entry and Start System
*5: w/ Power Back Door System
*6: w/ Tire Pressure Warning System

WIRING DIAGRAM

Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System.
Dtc
U1002 (Can Ms Bus) Lost Communication With Gateway Module (Main Body Ecu)

INSPECTION PROCEDURE

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

1.PRECAUTION

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (Click here).

NEXT

2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.
CAUTION:
For vehicles with an SRS system:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

NEXT

3.CHECK CAN BUS WIRE (CAN MAIN WIRE FOR DISCONNECTION, CHECK BUS LINE FOR SHORT CIRCUIT)

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition	Resistance Malfunction
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	54 to 69 Ω	Below 53 Ω: Short in line
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	54 to 69 Ω	70 Ω or higher: Open in CAN main bus line
E3-16 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher	Below 6 kΩ: +B short
E3-15 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher	Below 6 kΩ: +B short
E3-16 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher	Below 200 Ω: Ground short
E3-15 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher	Below 200 Ω: Ground short

Text in Illustration
*a	Component with harness connected (Main Body ECU [Cowl Side Junction Block LH])
*b	Front view of DLC3

Result
Result	Proceed to
NG Open in CAN main wire	A
NG Short in line +B short Ground short	B
OK	C

Go to step 19

Go to step 58

A

4.CHECK FOR OPEN IN MAIN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR - MAIN BODY ECU)

Disconnect the L29 No. 2 CAN junction connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
L29-1 (CANH) - L29-2 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 2 CAN Junction Connector)

Go to step 6

OK

5.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

Disconnect the L30 No. 2 CAN junction connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
L30-1 (CANH) - L30-2 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 2 CAN Junction Connector)

Go to step 11

REPLACE NO. 2 CAN JUNCTION CONNECTOR

6.CONNECT CONNECTOR

Reconnect the L29 No. 2 CAN junction connector.

NEXT

7.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU)

Disconnect the E73 No. 8 junction connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E73-3 (CANH) - E73-14 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 8 Junction Connector)

Go to step 9

OK

8.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E73-1 (CANH) - E73-12 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 8 Junction Connector)

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

REPLACE NO. 8 JUNCTION CONNECTOR

9.CONNECT CONNECTOR

Reconnect the E73 No. 8 junction connector.

NEXT

10.CHECK FOR OPEN IN CAN BUS MAIN WIRE (MAIN BODY ECU - NO. 8 JUNCTION CONNECTOR)

Disconnect the E3 main body ECU (cowl side junction block LH) connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E3-16 (CANP) - E3-15 (CANN)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to Main Body ECU [Cowl Side Junction Block LH])

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MAIN BODY ECU (MAIN BODY ECU - NO. 8 JUNCTION CONNECTOR)

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

11.CONNECT CONNECTOR

Reconnect the L29 and L30 No. 2 CAN junction connectors.

NEXT

12.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 10 JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR)

Disconnect the E70 No. 10 junction connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E70-1 (CANH) - E70-12 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 10 Junction Connector)

Go to step 16

OK

13.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 10 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E70-3 (CANH) - E70-14 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 10 Junction Connector)

Go to step 14

REPLACE NO. 10 JUNCTION CONNECTOR

14.CONNECT CONNECTOR

Reconnect the E70 No. 10 junction connector.

NEXT

15.CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER ASSEMBLY - NO. 10 JUNCTION CONNECTOR)

Disconnect the E7 combination meter assembly connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E7-1 (MPX+) - E7-2 (MPX-)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Combination Meter Assembly)
Result
Result
Proceed to
OK (w/ Multi-information Display)
A
OK (w/o Multi-information Display)
B
NG
C

REPLACE COMBINATION METER ASSEMBLY (Click here)

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (COMBINATION METER ASSEMBLY - NO. 10 JUNCTION CONNECTOR)

REPLACE COMBINATION METER ASSEMBLY (Click here)

16.CONNECT CONNECTOR

Reconnect the E70 No. 10 junction connector.

NEXT

17.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)

Disconnect the E76 No. 9 junction connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E76-1 (CANH) - E76-12 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 9 Junction Connector)

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)

OK

18.CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Switch Condition
Specified Condition
E76-7 (CANH) - E76-18 (CANL)
Ignition switch off
108 to 132 Ω
Text in Illustration
*a
Rear view of wire harness connector
(to No. 9 Junction Connector)

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

REPLACE NO. 9 JUNCTION CONNECTOR

19.CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR SIDE)

Disconnect the E70 No. 10 junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	108 to 132 Ω
E3-16 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-15 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-16 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E3-15 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Component with harness connected (Main Body ECU [Cowl Side Junction Block LH])
*b	Front view of DLC3

Go to step 21

OK

20.CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E70-3 (CANH) - E70-14 (CANN)	Ignition switch off	108 to 132 Ω
E70-3 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E70-14 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E70-3 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E70-14 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 10 Junction Connector)
*b	Front view of DLC3

Go to step 37

REPLACE NO. 10 JUNCTION CONNECTOR

21.CONNECT CONNECTOR

Reconnect the E70 No. 10 junction connector.

NEXT

22.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)

Disconnect the E76 No. 9 junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E76-1 (CANH) - E76-12 (CANL)	Ignition switch off	108 to 132 Ω
E76-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-12 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E76-12 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 9 Junction Connector)
*b	Front view of DLC3

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR)

OK

23.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR SIDE)

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	108 to 132 Ω
E3-16 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-15 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-16 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E3-15 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Component with harness connected (Main Body ECU [Cowl Side Junction Block LH])
*b	Front view of DLC3

Go to step 28

OK

24.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - POSITION CONTROL ECU AND SWITCH)

NOTICE:

For vehicles without seat memory, go to "Check for Short in CAN Bus Wires (No. 9 Junction Connector - Multiplex Tilt and Telescopic ECU)".

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E76-4 (CANH) - E76-15 (CANL)	Ignition switch off	200 Ω or higher
E76-4 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-15 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-4 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E76-15 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 9 Junction Connector)
*b	Front view of DLC3

Go to step 40

OK

25.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - MULTIPLEX TILT AND TELESCOPIC ECU)

NOTICE:

For vehicles without a power tilt and power telescopic steering column system, go to "Check for Short in CAN Bus Wires (No. 9 Junction Connector - Outer Mirror Control ECU Assembly)".

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E76-3 (CANH) - E76-14 (CANL)	Ignition switch off	200 Ω or higher
E76-3 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-14 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-3 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E76-14 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 9 Junction Connector)
*b	Front view of DLC3

Go to step 42

OK

26.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - OUTER MIRROR CONTROL ECU ASSEMBLY)

NOTICE:

For vehicles without seat memory, go to "Check for Short in CAN Bus Wires (No. 9 Junction Connector - Certification ECU)".

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E76-5 (CANH) - E76-16 (CANL)	Ignition switch off	200 Ω or higher
E76-5 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-16 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-5 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E76-16 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 9 Junction Connector)
*b	Front view of DLC3

Go to step 44

OK

27.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - CERTIFICATION ECU)

NOTICE:

For vehicles without an entry and start system, replace No. 9 junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E76-2 (CANH) - E76-13 (CANL)	Ignition switch off	200 Ω or higher
E76-2 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-13 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E76-2 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E76-13 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 9 Junction Connector)
*b	Front view of DLC3

Go to step 46

REPLACE NO. 9 JUNCTION CONNECTOR

28.CONNECT CONNECTOR

Reconnect the E76 No. 9 junction connector.

NEXT

29.CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR)

Disconnect the L30 No. 2 CAN junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L30-1 (CANH) - L30-2 (CANL)	Ignition switch off	108 to 132 Ω
L30-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L30-2 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L30-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L30-2 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 2 CAN Junction Connector)
*b	Front view of DLC3

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR)

OK

30.CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR SIDE)

Disconnect the L29 No. 2 CAN junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	108 to 132 Ω
E3-16 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-15 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-16 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E3-15 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Component with harness connected (Main Body ECU [Cowl Side Junction Block LH])
*b	Front view of DLC3

Go to step 34

OK

31.CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - POWER BACK DOOR ECU)

NOTICE:

For vehicles without a power back door system, go to "Check for Short in CAN Bus Wires (No. 2 CAN Junction Connector - Tire Pressure Warning ECU)".

Disconnect the L54 No. 2 CAN junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L54-1 (CANH) - L54-2 (CANL)	Ignition switch off	200 Ω or higher
L54-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L54-2 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L54-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L54-2 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 2 CAN Junction Connector)
*b	Front view of DLC3

Go to step 48

OK

32.CHECK FOR FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 2 MAIN BODY ECU)

Disconnect the L57 No. 2 CAN junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L57-1 (CANH) - L57-2 (CANL)	Ignition switch off	200 Ω or higher
L57-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L57-2 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L57-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L57-2 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 2 CAN Junction Connector)
*b	Front view of DLC3

Go to step 50

OK

33.CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU)

NOTICE:

For vehicles without a tire pressure warning system, go to "Replace No. 2 CAN Junction Connector".

Disconnect the L58 No. 2 CAN junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L58-1 (CANH) - L58-2 (CANL)	Ignition switch off	200 Ω or higher
L58-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L58-2 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L58-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L58-2 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 2 CAN Junction Connector)
*b	Front view of DLC3

Go to step 52

REPLACE NO. 2 CAN JUNCTION CONNECTOR

34.CONNECT CONNECTOR

Reconnect the L29 and L30 No. 2 CAN junction connectors.

NEXT

35.CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

Disconnect the E73 No. 8 junction connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E73-1 (CANH) - E73-12 (CANL)	Ignition switch off	108 to 132 Ω
E73-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-12 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E73-12 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 8 Junction Connector)
*b	Front view of DLC3

REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

OK

36.CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - WINDSHIELD WIPER ECU)

NOTICE:

For vehicles without an rain sensor, go to "Check for Short in CAN Bus Wires (No. 8 Junction Connector - Main Body ECU)".

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E73-4 (CANH) - E73-15 (CANL)	Ignition switch off	200 Ω or higher
E73-4 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-15 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-4 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E73-15 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 8 Junction Connector)
*b	Front view of DLC3

Go to step 54

OK

37.CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU)

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E73-3 (CANH) - E73-14 (CANL)	Ignition switch off	108 to 132 Ω
E73-3 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-14 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E73-3 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E73-14 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 8 Junction Connector)
*b	Front view of DLC3

Go to step 56

REPLACE NO. 8 JUNCTION CONNECTOR

38.CONNECT CONNECTOR

Reconnect the E70 No. 10 junction connector.

NEXT

39.CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER ASSEMBLY)

Disconnect the E7 combination meter assembly connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E7-1 (MPX+) - E7-2 (MPX-)	Ignition switch off	108 to 132 Ω
E7-1 (MPX+) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E7-2 (MPX-) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E7-1 (MPX+) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E7-2 (MPX-) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Combination Meter Assembly)
*b	Front view of DLC3

Result
Result	Proceed to
OK (w/ Multi-information Display)	A
OK (w/o Multi-information Display)	B
NG	C

REPLACE COMBINATION METER ASSEMBLY (Click here)

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO COMBINATION METER ASSEMBLY (MPX+, MPX-)

REPLACE COMBINATION METER ASSEMBLY (Click here)

40.CONNECT CONNECTOR

Reconnect the E76 No. 9 junction connector.

NEXT

41.CHECK FOR SHORT IN CAN BUS WIRES (POSITION CONTROL ECU AND SWITCH)

Disconnect the c27 position control ECU and switch connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
c27-5 (MPX1) - c27-1 (MPX2)	Ignition switch off	54 to 69 Ω
c27-5 (MPX1) - E22-4 (CG)	Ignition switch off	200 Ω or higher
c27-1 (MPX2) - E22-4 (CG)	Ignition switch off	200 Ω or higher
c27-5 (MPX1) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
c27-1 (MPX2) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Position Control ECU and Switch)
*b	Front view of DLC3

REPLACE CAN BRANCH WIRE CONNECTED TO POSITION CONTROL ECU AND SWITCH (MPX1, MPX2)

REPLACE POSITION CONTROL ECU AND SWITCH (Click here)

42.CONNECT CONNECTOR

Reconnect the E76 No. 9 junction connector.

NEXT

43.CHECK FOR SHORT IN CAN BUS WIRES (MULTIPLEX TILT AND TELESCOPIC ECU)

Disconnect the E27 multiplex tilt and telescopic ECU connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E27-5 (CANP) - E27-14 (CANN)	Ignition switch off	54 to 69 Ω
E27-5 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E27-14 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E27-5 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E27-14 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Multiplex Tilt and Telescopic ECU)
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO MULTIPLEX TILT AND TELESCOPIC ECU (CANP, CANN)

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU (Click here)

44.CONNECT CONNECTOR

Reconnect the E76 No. 9 junction connector.

NEXT

45.CHECK FOR SHORT IN CAN BUS WIRES (OUTER MIRROR CONTROL ECU ASSEMBLY)

Disconnect the I24 outer mirror control ECU assembly connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
I24-1 (CANH) - I24-21 (CANL)	Ignition switch off	54 to 69 Ω
I24-1 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
I24-21 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
I24-1 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
I24-21 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Outer Mirror Control ECU Assembly)
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO OUTER MIRROR CONTROL ECU ASSEMBLY (CANH, CANL)

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (Click here)

46.CONNECT CONNECTOR

Reconnect the E76 No. 9 junction connector.

NEXT

47.CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU)

Disconnect the E29 certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E29-27 (CANH) - E29-28 (CANL)	Ignition switch off	54 to 69 Ω
E29-27 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E29-28 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E29-27 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E29-28 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Certification ECU [Smart Key ECU Assembly])
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO CERTIFICATION ECU (CANH, CANL)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

48.CONNECT CONNECTOR

Reconnect the L29, L30 and L54 No. 2 CAN junction connectors.

NEXT

49.CHECK FOR SHORT IN CAN BUS WIRES (POWER BACK DOOR ECU)

Disconnect the L52 power back door unit assembly (power back door ECU) connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L52-6 (MPX1) - L52-5 (MPX2)	Ignition switch off	54 to 69 Ω
L52-6 (MPX1) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L52-5 (MPX2) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L52-6 (MPX1) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L52-5 (MPX2) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to Power Back Door Unit Assembly [Power Back Door ECU])
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO POWER BACK DOOR ECU (MPX1, MPX2)

REPLACE POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU) (Click here)

50.CONNECT CONNECTOR

Reconnect the L29, L30, L54 and L57 No. 2 CAN junction connectors.

NEXT

51.CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 MAIN BODY ECU)

Disconnect the L50 No. 2 main body ECU connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L50-11 (MPX+) - L50-12 (MPX-)	Ignition switch off	54 to 69 Ω
L50-11 (MPX+) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L50-12 (MPX-) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L50-11 (MPX+) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L50-12 (MPX-) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to No. 2 Main Body ECU)
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO NO. 2 MAIN BODY ECU (MPX+, MPX-)

REPLACE NO. 2 MAIN BODY ECU (Click here)

52.CONNECT CONNECTOR

Reconnect the L29, L30, L54, L57 and L58 No. 2 CAN junction connectors.

NEXT

53.CHECK FOR SHORT IN CAN BUS WIRES (TIRE PRESSURE WARNING ECU)

Disconnect the L60 tire pressure warning ECU and receiver connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
L60-3 (CP1) - L60-6 (CN1)	Ignition switch off	54 to 69 Ω
L60-3 (CP1) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L60-6 (CN1) - E22-4 (CG)	Ignition switch off	200 Ω or higher
L60-3 (CP1) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
L60-6 (CN1) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver)
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO TIRE PRESSURE WARNING ECU (CP1, CN1)

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER (Click here)

54.CONNECT CONNECTOR

Reconnect the E73 No. 8 junction connector.

NEXT

55.CHECK FOR SHORT IN CAN BUS WIRES (WINDSHIELD WIPER ECU)

Disconnect the E85 windshield wiper ECU connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E85-6 (CANH) - E85-5 (CANL)	Ignition switch off	54 to 69 Ω
E85-6 (CANH) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E85-5 (CANL) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E85-6 (CANH) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E85-5 (CANL) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Front view of wire harness connector (to Windshield Wiper ECU)
*b	Front view of DLC3

REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO WINDSHIELD WIPER ECU (CANH, CANL)

REPLACE WINDSHIELD WIPER ECU (Click here)

56.CONNECT CONNECTOR

Reconnect the E73 No. 8 junction connector.

NEXT

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

Disconnect the E3 main body ECU (cowl side junction block LH) connector.

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
E3-16 (CANP) - E3-15 (CANN)	Ignition switch off	108 to 132 Ω
E3-16 (CANP) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-15 (CANN) - E22-4 (CG)	Ignition switch off	200 Ω or higher
E3-16 (CANP) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher
E3-15 (CANN) - E22-16 (BAT)	Ignition switch off	6 kΩ or higher

Text in Illustration
*a	Rear view of wire harness connector (to Main Body ECU [Cowl Side Junction Block LH])
*b	Front view of DLC3

REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO MAIN BODY ECU (CANP, CANN)

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

58.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)

Connect the cable to the negative (-) battery terminal.

Text in Illustration
*a
Front view of wire harness connector
(to Main Body ECU [Cowl Side Junction Block LH])
*b
Rear view of wire harness connector
(to Main Body ECU [Cowl Side Junction Block LH])
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

Disconnect the E3, 2A and 2D main body ECU (cowl side junction block LH) connectors.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
2D-62 (GND2) - Body ground
Always
Below 1 Ω
E3-1 (GND3) - Body ground
Always
Below 1 Ω

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Condition
Specified Condition
2A-1 (ALTB) - Body ground
Always
11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

Tester Connection	Condition	Specified Condition
2D-62 (GND2) - Body ground	Always	Below 1 Ω
E3-1 (GND3) - Body ground	Always	Below 1 Ω