Inspection Procedure

NOTICE:

• Turn the ignition switch off before measuring the resistance of the CAN main wire and CAN branch wires.

• 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 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 any triggers related ECU and sensor communication on the CAN, which would cause resistance reading variations.

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

Proceed to

E58-27 (CANH) -E58-28 (CANL)

Ignition switch off

54 to 69 Q

A

E58-27 (CANH) -E58-28 (CANL)

Ignition switch off

69 Q or more

B

E58-27 (CANH) -E58-28 (CANL)

Ignition switch off

54 Q or less

Go to step 11

CHECK SHORT TO +B IN 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

E58-27 (CANH) - E58-1 (+B)

Ignition switch off

6 kQ or higher

E58-2 (CANL) - E58-1 (+B)

Ignition switch off

Go to step 5

CHECK SHORT TO GND IN CAN MS BUS WIRE

Certification ECU Connector:

E CANL y CANH

B139430E07

(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

E58-27 (CANH) - E58-17 (E)

Ignition switch off

200 Q or higher

E58-28 (CANL) - E58-17 (E)

Ignition switch off

200 Q or higher

Go to step 7

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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