Open in CAN Main Bus Line [08/2014 - ]: Procedure

CHECK FOR OPEN IN CAN BUS WIRE (DLC3 BRANCH WIRE)

Turn the power switch off.

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
L61-6 (CANH) - L61-14 (CANL)	Power switch off	108 to 132 Ω

TEXT IN ILLUSTRATION

DLC3

NOTE:

When the measured value is 133 Ω or higher and a CAN communication system DTC is output, there may be a fault besides disconnection of the DLC3 branch wire. For that reason, troubleshooting should be performed again from How to Proceed with Troubleshooting after repairing the trouble area. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2014 - ] .

NG → REPAIR OR REPLACE CAN BRANCH WIRE CONNECTED TO DLC3

OK: Go to next step

CHECK FOR OPEN IN CAN BUS WIRE (ECM)

Disconnect the ECM connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to ECM)

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
A57-13 (CANH) - A57-5 (CANL)	Power switch off	108 to 132 Ω

NG → See step 3

OK → See step 8

CHECK FOR OPEN IN CAN BUS WIRE (COMBINATION METER)

Reconnect the ECM connector.

Disconnect the combination meter connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to Combination Meter)

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
L27-10 (CANH) - L27-11 (CANL)	Power switch off	108 to 132 Ω

NG → See step 4

OK → See step 7

CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C)

Reconnect the combination meter connector.

Disconnect the CAN No. 1 junction connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to CAN No. 1 Junction Connector)
*2	to Combination Meter

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
L94-1 (CANH) - L94-12 (CANL)	Power switch off	108 to 132 Ω

NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - COMBINATION METER)

OK: Go to next step

CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 1 J/C - CAN NO. 2 J/C)

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
L94-7 (CANH) - L94-18 (CANL)	Power switch off	108 to 132 Ω

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to CAN No. 1 Junction Connector)
*2	to CAN No. 2 Junction Connector

NG → See step 6

OK → REPLACE CAN NO. 1 JUNCTION CONNECTOR

CHECK FOR OPEN IN CAN BUS WIRE (CAN NO. 2 J/C)

Reconnect the CAN No. 1 junction connector.

Disconnect the CAN No. 2 junction connector.

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition	Connected to
L95-3 (CANH) - L95-14 (CANL)	Power switch off	108 to 132 Ω	CAN No. 1 junction connector
L95-9 (CANH) - L95-20 (CANL)	Power switch off	108 to 132 Ω	ECM

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to CAN No. 2 Junction Connector)
*2	to CAN No. 1 Junction Connector
*3	to ECM

Result

Result	Proceed to
OK	A
NG (to ECM main wire)	B
NG (to CAN No. 1 junction connector main wire)	C

B → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 2 J/C - ECM)

C → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (CAN NO. 1 J/C - CAN NO. 2 J/C)

A → REPLACE CAN NO. 2 JUNCTION CONNECTOR

REPLACE METER CIRCUIT PLATE NO. 3 (COMBINATION METER ECU). Refer to DISASSEMBLY [08/2014 - ]
REPLACE ECM. Refer to REMOVAL [08/2014 - ]