Inspection Procedure

CHECK CAN BUS LINE (MAIN BUS LINE FOR OPEN, BUS LINES FOR SHORT CIRCUIT)

Turn the engine switch off.
Measure the resistance according to the value(s) in CAN BUS LINE (MAIN BUS LINE FOR OPEN, BUS LINES FOR SHORT CIRCUIT) .

Standard resistance

CAN BUS LINE (MAIN BUS LINE FOR OPEN, BUS LINES FOR SHORT CIRCUIT)

Tester Connection	Condition	Specified Value
J21-6 (CANH) - J21-14 (CANL)	Engine switch off	54 to 69 ohms

Result

RESULT DESCRIPTION TABLE

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: OPEN IN CAN MAIN BUS LINE

C: SHORT IN CAN BUS LINES

A: Go to next step.

CHECK CAN BUS LINE (SHORT TO B+ IN CAN BUS LINE)

Measure the resistance according to the value(s) in CAN BUS LINE (SHORT TO B+ IN CAN BUS LINE) .

Standard resistance

CAN BUS LINE (SHORT TO B+ IN CAN BUS LINE)

Tester Connection	Condition	Specified Value
J21-6 (CANH) - J21-16 (BAT)	Engine switch off	1 M ohms or higher
J21-14 (CANL) - J21-16 (BAT)	Engine switch off	1 M ohms or higher

Reference

RESULT DESCRIPTION TABLE

Result	Reference
OK	Go to step 3
NG	Short to B+ in CAN Bus Line

Fig 2: Checking CAN BUS Wire (Short To B+ In CAN BUS Line)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: SHORT TO B+ IN CAN BUS LINE

OK: Go to next step.

CHECK CAN BUS LINE (SHORT TO GND IN CAN BUS LINE)

Measure the resistance according to the value(s) in CAN BUS LINE (SHORT TO GND IN CAN BUS LINE) .

Standard resistance

CAN BUS LINE (SHORT TO GND IN CAN BUS LINE)

Tester Connection	Condition	Specified Value
J21-4 (CG) - J21-6 (CANH)	Engine switch off	1 k ohms or higher
J21-4 (CG) - J21-14 (CANL)	Engine switch off	1 k ohms or higher

Reference

RESULT DESCRIPTION TABLE

Result	See Procedure
OK	INSPECTION PROCEDURE
NG	SYSTEM DESCRIPTION

Fig 3: Checking CAN BUS Wire (Short To GND In CAN BUS Line

NG: SHORT TO GND IN CAN BUS LINE