NETWORKING CAN COMMUNICATION SYSTEM Check CAN Bus Line for Short to +B

DESCRIPTION

There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminals 6 (CANH) and 16 (BAT) or 14 (CANL) and 16 (BAT) of the DLC3.

Symptom	Trouble Area
No resistance exists between terminals 6 (CANH) and 16 (BAT) or 14 (CANL) and 16 (BAT) of the DLC3.	· Short to +B in CAN main bus line · Short to +B in CAN branch line · Combination meter assembly · Power steering ECU assembly · Main body ECU (multiplex network body ECU) · Airbag ECU assembly · ECM · Skid control ECU (brake actuator assembly)1 · Air conditioning amplifier assembly · Steering sensor2 · Certification ECU (smart key ECU assembly)*3 · No. 1 CAN junction connector · No. 2 CAN junction connector

Symptom

Trouble Area

No resistance exists between terminals 6 (CANH) and 16 (BAT) or 14 (CANL) and 16 (BAT) of the DLC3.

Short to +B in CAN main bus line

Short to +B in CAN branch line

Combination meter assembly

Power steering ECU assembly

Main body ECU (multiplex network body ECU)

Airbag ECU assembly

ECM

Skid control ECU (brake actuator assembly)*1

Air conditioning amplifier assembly

Steering sensor*2

Certification ECU (smart key ECU assembly)*3

No. 1 CAN junction connector

No. 2 CAN junction connector

*1: w/ ABS

*2: w/ VSC

*3: w/ Smart Entry and Start System

WIRING DIAGRAM

0.177,0.094 1.281,0.333 1.104,0.24 12 false V Bus: 5.458,0.219 6.719,0.552 1.26,0.333 10 false x: Suspected Area 3.354,0.281 4.01,0.552 0.656,0.271 10 false 120 Ω 0.427,0.656 1.083,0.927 0.656,0.271 10 false E43 0.75,0.656 2.667,0.979 1.917,0.323 10 false Combination Meter Assembly 2.719,0.865 3.375,1.135 0.656,0.271 10 false CANL 4.063,0.854 4.719,1.125 0.656,0.271 10 false CANH 2.969,1.073 3.26,1.365 0.292,0.292 10 false 31 2.938,1.292 3.229,1.583 0.292,0.292 10 false W 2.979,1.51 3.271,1.802 0.292,0.292 10 false 15 4.031,1.073 4.323,1.365 0.292,0.292 10 false 32 4.083,1.292 4.375,1.583 0.292,0.292 10 false LG 4.042,1.5 4.333,1.792 0.292,0.292 10 false 4 4.333,1.698 4.99,1.969 0.656,0.271 10 false E55 4.646,1.698 6.625,1.969 1.979,0.271 10 false No. 2 CAN Junction Connector 0.063,7.302 0.719,7.573 0.656,0.271 10 false E110 0.438,7.302 2.26,7.708 1.823,0.406 10 false Certification ECU (Smart Key ECU Assembly)*4 5.833,5.208 6.49,5.479 0.656,0.271 10 false CANH 1.01,7.031 1.667,7.302 0.656,0.271 10 false CANL 1.469,6.542 2.125,6.813 0.656,0.271 10 false 14 1.469,7.031 2.125,7.302 0.656,0.271 10 false 15 2.083,6.5 2.385,6.792 0.302,0.292 10 false R 2.052,7.104 2.354,7.396 0.302,0.292 10 false W 2.719,6.531 3.375,6.802 0.656,0.271 10 false 6 2.656,7.021 3.313,7.292 0.656,0.271 10 false 17 2.958,7.573 3.615,7.844 0.656,0.271 10 false 16 4.042,7.573 4.698,7.844 0.656,0.271 10 false 5 5.406,5.979 5.844,6.25 0.438,0.271 10 false E115 5.781,5.979 7.021,6.271 1.24,0.292 10 false Steering Sensor*3 0.99,6.563 1.646,6.833 0.656,0.271 10 false CANH 5.854,5.698 6.51,5.969 0.656,0.271 10 false CANL 5.646,5.708 5.927,5.948 0.281,0.24 10 false 2 5.656,5.219 6.313,5.49 0.656,0.271 10 false 3 4.313,5.219 4.969,5.49 0.656,0.271 10 false 10 4.323,5.708 4.667,5.979 0.344,0.271 10 false 21 4.927,5.177 5.229,5.469 0.302,0.292 10 false SB 4.958,5.792 5.26,6.083 0.302,0.292 10 false W 2.656,2.063 2.948,2.354 0.292,0.292 10 false 12 2.729,1.594 3.021,1.885 0.292,0.292 10 false 1 2.073,1.521 2.365,1.813 0.292,0.292 10 false V 2.042,2.146 2.333,2.438 0.292,0.292 10 false W 1.469,1.594 1.76,1.885 0.292,0.292 10 false 13 1.479,2.063 1.771,2.354 0.292,0.292 10 false 22 1.479,3.302 1.771,3.594 0.292,0.292 10 false 14 1.479,3.781 1.771,4.073 0.292,0.292 10 false 13 2.052,3.844 2.344,4.135 0.292,0.292 10 false W 2.073,3.26 2.365,3.552 0.292,0.292 10 false G 2.719,3.292 3.01,3.583 0.292,0.292 10 false 8 2.667,3.781 2.958,4.073 0.292,0.292 10 false 19 2.75,4.979 3.042,5.271 0.292,0.292 10 false 2 2.677,5.458 2.969,5.75 0.292,0.292 10 false 13 2.438,5.521 2.729,5.813 0.292,0.292 10 false W 2.458,4.917 2.75,5.208 0.292,0.292 10 false Y 4.323,4.25 4.615,4.542 0.292,0.292 10 false 22 4.323,3.729 4.615,4.021 0.292,0.292 10 false 11 4.323,2.667 4.615,2.958 0.292,0.292 10 false 20 4.344,2.146 4.635,2.438 0.292,0.292 10 false 9 4.938,2.125 5.26,2.417 0.323,0.292 10 false GR 4.958,2.719 5.25,3.01 0.292,0.292 10 false W 4.938,3.667 5.229,3.958 0.292,0.292 10 false BE 4.958,4.292 5.25,4.583 0.292,0.292 10 false W 5.656,4.208 5.948,4.5 0.292,0.292 10 false 14 5.563,3.729 5.854,4.021 0.292,0.292 10 false 6 5.635,2.646 5.927,2.938 0.292,0.292 10 false 8 5.646,2.177 5.938,2.469 0.292,0.292 10 false 7 5.854,2.167 6.51,2.438 0.656,0.271 10 false CANH 5.854,2.667 6.51,2.938 0.656,0.271 10 false CANL 5.458,2.906 6.115,3.177 0.656,0.271 10 false E40 5.771,2.906 7.063,3.313 1.292,0.406 10 false Power Steering ECU Assembly 5.792,3.833 6.448,4.104 0.656,0.271 10 false CANH 5.896,4.094 6.552,4.365 0.656,0.271 10 false CANL 5.906,4.406 6.563,4.677 0.656,0.271 10 false E13 6.208,4.406 6.865,4.677 0.656,0.271 10 false DLC3 0.063,2.333 0.719,2.604 0.656,0.271 10 false E14 0.99,1.594 1.646,1.865 0.656,0.271 10 false CANH 1.01,2.063 1.667,2.333 0.656,0.271 10 false CANL 0.365,2.333 1.823,2.635 1.458,0.302 10 false Airbag ECU Assembly 0.99,3.302 1.646,3.573 0.656,0.271 10 false CANH 1.01,3.792 1.667,4.063 0.656,0.271 10 false CANL 0.063,4.052 0.719,4.323 0.656,0.271 10 false E31 0.365,4.052 2.01,4.49 1.646,0.438 10 false Main Body ECU (Multiplex Network Body ECU) 0.031,5.729 1.583,6.271 1.552,0.542 10 false Air Conditioning Amplifier Assembly 0.99,4.969 1.646,5.24 0.656,0.271 10 false CANH 1.01,5.469 1.667,5.74 0.656,0.271 10 false CANL 1.479,5.083 1.844,5.333 0.365,0.25 10 false E102 1.479,5.344 1.844,5.594 0.365,0.25 10 false E102 1.99,5.083 2.354,5.333 0.365,0.25 10 false E7 1.979,5.344 2.344,5.594 0.365,0.25 10 false E7 1.51,4.906 1.875,5.156 0.365,0.25 10 false 11*1 1.49,5.552 1.854,5.802 0.365,0.25 10 false 12*1 1.958,4.896 2.323,5.146 0.365,0.25 10 false 8*2 1.958,5.552 2.323,5.802 0.365,0.25 10 false 9*2 4.396,6.521 7.073,6.781 2.677,0.26 10 false *1: for Automatic Air Conditioning System 4.396,6.854 7,7.115 2.604,0.26 10 false *2: for Manual Air Conditioning System 4.396,7.208 7,7.469 2.604,0.26 10 false *3: w/ VSC 4.396,7.573 7,7.833 2.604,0.26 10 false *4: w/ Smart Entry and Start System 0.781,8.24 3.385,8.5 2.604,0.26 10 false : CAN Main Bus Line (CANH) 0.781,8.563 2.833,8.781 2.052,0.219 10 false : CAN Main Bus Line (CANL) 3.927,8.229 6.531,8.49 2.604,0.26 10 false : CAN Branch Line (CANH) 3.927,8.531 6.531,8.792 2.604,0.26 10 false : CAN Branch Line (CANL)

0.104,0.094 0.875,0.438 0.771,0.344 12 false V Bus: 4.896,0.313 6.385,0.635 1.49,0.323 10 false x: Suspected Area 2.927,0.469 3.208,0.719 0.281,0.25 10 false W 4.042,0.479 4.323,0.729 0.281,0.25 10 false L 4.708,1.125 4.99,1.375 0.281,0.25 10 false V 4.688,1.719 4.969,1.969 0.281,0.25 10 false W 4.313,1.156 4.594,1.406 0.281,0.25 10 false 5 4.281,1.656 4.563,1.906 0.281,0.25 10 false 16 4.01,0.708 4.292,0.958 0.281,0.25 10 false 1 2.938,0.729 3.219,0.979 0.281,0.25 10 false 12 2.948,2.458 3.229,2.708 0.281,0.25 10 false 17 4,2.458 4.281,2.708 0.281,0.25 10 false 6 4.031,2.844 4.313,3.094 0.281,0.25 10 false B 2.917,2.844 3.198,3.094 0.281,0.25 10 false W 5.115,1.531 5.5,1.771 0.385,0.24 10 false A48 5.115,1.292 5.5,1.531 0.385,0.24 10 false A48 5.49,1.281 5.875,1.521 0.385,0.24 10 false A64 5.5,1.531 5.885,1.771 0.385,0.24 10 false A64 5.104,1.094 5.49,1.333 0.385,0.24 10 false 25*1 5.479,1.094 5.865,1.333 0.385,0.24 10 false 25*2 5.094,1.729 5.479,1.969 0.385,0.24 10 false 14*1 5.448,1.729 5.833,1.969 0.385,0.24 10 false 14*2 5.875,1.167 6.365,1.396 0.49,0.229 10 false CANH 5.885,1.646 6.375,1.875 0.49,0.229 10 false CANL 5.594,1.906 7.146,2.438 1.552,0.531 10 false Skid Control ECU (Brake Actuator Assembly) 3.802,3.438 4.188,3.677 0.385,0.24 10 false A40 3.802,3.625 4.188,3.865 0.385,0.24 10 false A56 3.042,3.427 3.427,3.667 0.385,0.24 10 false A40 3.802,3.823 4.188,4.063 0.385,0.24 10 false A56 3.052,3.625 3.438,3.865 0.385,0.24 10 false A56 3.052,3.813 3.438,4.052 0.385,0.24 10 false A56 4.167,3.813 4.552,4.052 0.385,0.24 10 false 41*5 4.156,3.438 4.542,3.677 0.385,0.24 10 false 13*3 4.167,3.625 4.552,3.865 0.385,0.24 10 false 8*4 2.656,3.427 3.042,3.667 0.385,0.24 10 false 26*3 2.74,3.625 3.125,3.865 0.385,0.24 10 false 9*4 2.667,3.823 3.052,4.063 0.385,0.24 10 false 49*5 4.01,4.031 4.5,4.26 0.49,0.229 10 false CANH 2.74,4.031 3.229,4.26 0.49,0.229 10 false CANL 3.375,4.656 3.865,4.885 0.49,0.229 10 false 120 Ω 4.573,4.302 5.063,4.531 0.49,0.229 10 false ECM 0.563,2.552 1.708,2.844 1.146,0.292 10 false *1: w/ ABS 0.563,2.875 1.708,3.167 1.146,0.292 10 false *2: w/ VSC 0.563,3.208 1.708,3.5 1.146,0.292 10 false *3: for 2ZR-FE 0.563,3.542 1.708,3.833 1.146,0.292 10 false *4: for 1ZR-FE 0.563,3.875 1.708,4.167 1.146,0.292 10 false *5: for 2NZ-FE 0.927,4.948 2.958,5.198 2.031,0.25 10 false : CAN Main Bus Line (CANH) 0.927,5.354 2.958,5.604 2.031,0.25 10 false : CAN Main Bus Line (CANL) 4.063,4.969 6.094,5.219 2.031,0.25 10 false : CAN Branch Line (CANH) 4.063,5.375 6.094,5.625 2.031,0.25 10 false : CAN Branch Line (CANL) 0.51,1.365 0.865,1.563 0.354,0.198 10 false A39 0.833,1.365 2.833,1.656 2,0.292 10 false No. 1 CAN Junction Connector

CAUTION / NOTICE / HINT

CAUTION:: When performing the confirmation driving pattern, obey all speed limits and traffic laws.

NOTICE:: ·

Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

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

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION

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Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING

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After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

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DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

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After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM

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.

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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 FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR)

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

Disconnect the A39 No. 1 CAN junction connector.

1.927,0.333 2.323,0.625 0.396,0.292 5.333,0.479 5.729,0.771 0.396,0.292 6.406,2.833 6.302,2.833 6.302,2.833 6.135,2.167 true 1.479,2.073 1.26,1.104 1.26,1.104 1.115,1.104 true 2.01,2.073 1.646,0.885 1.646,0.885 1.531,0.885 true 1.5,2.344 1.292,2.833 1.292,2.833 1.177,2.833 true 2.01,2.323 1.802,3.042 1.802,3.042 1.677,3.042 true 2.135,2.073 2.292,0.948 2.292,0.948 2.479,0.948 true 2.146,2.323 2.396,3.042 2.396,3.042 2.5,3.042 true 0.073,0.063 0.385,0.26 0.313,0.198 10 false *a 4.042,0.052 4.354,0.25 0.313,0.198 10 false *1 2.01,0.365 2.323,0.563 0.313,0.198 10 false A39 5.417,0.521 5.729,0.719 0.313,0.198 10 false E13 6.479,2.74 6.938,2.938 0.458,0.198 10 false BAT 1.146,2.958 2.063,3.156 0.917,0.198 10 false CANL*c 0.979,0.792 1.896,0.99 0.917,0.198 10 false CANH*c 2.531,0.844 3.448,1.042 0.917,0.198 10 false CANH*d 0.542,1.01 1.458,1.208 0.917,0.198 10 false CANH*b 0.646,2.74 1.563,2.938 0.917,0.198 10 false CANL*b 2.573,2.948 3.49,3.146 0.917,0.198 10 false CANL*d

*1	DLC3	-	-
*a	Front view of wire harness connector (to No. 1 CAN Junction Connector)	*b	to No. 2 CAN Junction Connector
*c	to Skid Control ECU (Brake Actuator Assembly) (w/ ABS)	*d	to ECM

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

Standard Resistance:

Tester Connection	Condition	Specified Condition	Connected to
A39-1 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	No. 2 CAN junction connector
A39-12 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	No. 2 CAN junction connector
A39-5 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Skid control ECU (brake actuator assembly)*
A39-16 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Skid control ECU (brake actuator assembly)*
A39-6 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	ECM
A39-17 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	ECM

*: w/ ABS

Result:

Result	Proceed to
OK	A
NG (No. 2 CAN junction connector main line)	B
NG (ECU or sensor bus line)	C

REPLACE NO. 1 CAN JUNCTION CONNECTOR

2.CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR)

3.CHECK FOR SHORT TO +B IN CAN BUS LINE (ECU, SENSOR)

2.CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 2 CAN JUNCTION CONNECTOR)

Reconnect the A39 No. 1 CAN junction connector.

Disconnect the E55 No. 2 CAN junction connector.

1.927,0.313 2.323,0.604 0.396,0.292 5.333,0.448 5.729,0.74 0.396,0.292 6.406,2.833 6.302,2.833 6.302,2.833 6.135,2.167 true 1.5,2.063 0.854,1.677 0.854,1.677 0.729,1.677 true 1.625,2.083 0.99,1.333 0.99,1.333 0.854,1.333 true 1.49,2.323 0.927,2.531 0.927,2.531 0.813,2.531 true 1.635,2.323 1.052,2.802 1.052,2.802 0.948,2.802 true 1.865,2.083 1.25,0.74 1.25,0.74 1.094,0.74 true 1.885,2.333 1.427,3.344 1.427,3.344 1.25,3.344 true 2,2.063 1.396,0.469 1.396,0.469 1.271,0.469 true 2.021,2.323 1.531,3.521 1.531,3.521 1.417,3.521 true 2.396,2.073 2.771,0.781 2.771,0.781 2.885,0.781 true 2.396,2.313 2.698,3.24 2.698,3.24 2.813,3.24 true 2.521,2.073 2.927,0.99 2.927,0.99 3.031,0.99 true 2.531,2.292 2.885,3.042 2.885,3.042 3,3.042 true 2.781,2.063 3.219,1.5 3.219,1.5 3.333,1.5 true 2.781,2.292 3.208,2.573 3.208,2.573 3.344,2.573 true 2.656,2.073 3.156,1.208 3.156,1.208 3.271,1.208 true 2.635,2.313 3.156,2.771 3.156,2.771 3.292,2.771 true 2.135,2.073 2.594,0.469 2.594,0.469 2.708,0.469 true 2.135,2.323 2.552,3.469 2.552,3.469 2.667,3.469 true 0.073,0.063 0.385,0.26 0.313,0.198 10 false *a 4.042,0.052 4.354,0.25 0.313,0.198 10 false *1 2,0.365 2.313,0.563 0.313,0.198 10 false E55 5.417,0.51 5.729,0.708 0.313,0.198 10 false E13 6.479,2.74 6.938,2.938 0.458,0.198 10 false BAT 0.385,2.698 1.302,2.896 0.917,0.198 10 false CANL*c 0.281,1.24 1.198,1.438 0.917,0.198 10 false CANH*c 0.708,0.354 1.625,0.552 0.917,0.198 10 false CANH*e 0.146,1.583 1.063,1.781 0.917,0.198 10 false CANH*b 0.26,2.438 1.177,2.635 0.917,0.198 10 false CANL*b 0.885,3.417 1.802,3.615 0.917,0.198 10 false CANL*e 0.563,0.646 1.479,0.844 0.917,0.198 10 false CANH*d 0.74,3.24 1.656,3.438 0.917,0.198 10 false CANL*d 2.948,0.688 3.865,0.885 0.917,0.198 10 false CANH*g 2.865,3.146 3.781,3.344 0.917,0.198 10 false CANL*g 3.083,0.896 4,1.156 0.917,0.26 10 false CANH*h 3.083,2.948 4,3.177 0.917,0.229 10 false CANL*h 3.396,1.406 4.313,1.667 0.917,0.26 10 false CANH*j 3.406,2.479 4.323,2.708 0.917,0.229 10 false CANL*j 2.792,0.396 3.708,0.594 0.917,0.198 10 false CANH*f 3.333,1.125 4.25,1.385 0.917,0.26 10 false CANH*i 2.74,3.385 3.656,3.583 0.917,0.198 10 false CANL*f 3.365,2.688 4.281,2.917 0.917,0.229 10 false CANL*i

*1	DLC3	-	-
*a	Front view of wire harness connector (to No. 2 CAN Junction Connector)	*b	to Airbag ECU Assembly
*c	to Air Conditioning Amplifier Assembly	*d	to Combination Meter Assembly
*e	to No. 1 CAN Junction Connector	*f	to Certification ECU (Smart Key ECU Assembly) (w/ Smart Entry and Start System)
*g	to Main Body ECU (Multiplex Network Body ECU)	*h	to Power Steering ECU Assembly
*i	to Steering Sensor (w/ VSC)	*j	to DLC3

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

Standard Resistance:

Tester Connection	Condition	Specified Condition	Connected to
E55-1 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Airbag ECU assembly
E55-12 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Airbag ECU assembly
E55-2 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Air conditioning amplifier assembly
E55-13 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Air conditioning amplifier assembly
E55-4 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Combination meter assembly
E55-15 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Combination meter assembly
E55-5 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	No. 1 CAN junction connector
E55-16 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	No. 1 CAN junction connector
E55-6 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Certification ECU (smart key ECU assembly)*1
E55-17 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Certification ECU (smart key ECU assembly)*1
E55-8 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Main body ECU (multiplex network body ECU)
E55-19 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Main body ECU (multiplex network body ECU)
E55-9 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Power steering ECU assembly
E55-20 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Power steering ECU assembly
E55-10 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Steering sensor*2
E55-21 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	Steering sensor*2
E55-11 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	DLC3
E55-22 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher	DLC3

*1: w/ Smart Entry and Start System

*2: w/ VSC

Result:

Result	Proceed to
OK	A
NG (No. 1 CAN junction connector main line)	B
NG (ECU or sensor bus line)	C
NG (DLC3 branch line)	D

REPLACE NO. 2 CAN JUNCTION CONNECTOR

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR)

3.CHECK FOR SHORT TO +B IN CAN BUS LINE (ECU, SENSOR)

REPAIR OR REPLACE CAN BRANCH LINE CONNECTED TO DLC3

3.CHECK FOR SHORT TO +B IN CAN BUS LINE (ECU, SENSOR)

Reconnect all wire harness connectors.

Disconnect the ECU or sensor connected to the CAN bus line that is shorted to +B.

HINT:: If the ECU or sensor has multiple connectors, disconnect the connector that includes the CAN bus lines. To determine the ECU or sensor that is connected to the shorted bus line, refer to Terminals of ECU.; Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>TERMINALS OF ECU

1.5,0.708 2,0.958 0.5,0.25 2.052,1.854 2.302,1.271 2.302,1.271 2.542,1.271 true 2.052,2.583 1.865,3.042 1.865,3.042 1.667,3.042 true 2.479,2.583 2.583,3.021 2.583,3.021 2.792,3.021 true 0.135,0.125 0.552,0.458 0.417,0.333 10 false *1 2.594,1.167 3.167,1.49 0.573,0.323 10 false CANH 1.26,2.938 2.031,3.302 0.771,0.365 10 false CANL 1.635,0.75 2.208,1.188 0.573,0.438 10 false E13 2.844,2.917 3.313,3.135 0.469,0.219 10 false BAT

DLC3

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E13-6 (CANH) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
E13-14 (CANL) - E13-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

HINT:: If the resistance changes to 6 kΩ or higher when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.

Result:

Result
OK
NG

REPLACE CORRESPONDING ECU OR SENSOR

REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BUS LINE OR CONNECTOR