Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

CHECK CAN NO. 1 BUS WIRE

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Value
E21-6 (CANH) - E21-14 (CANL)	Engine switch off	54 to 69 Ω

Result

RESULT REFERENCE

Result	Proceed to
OK	A
69 Ω or higher	B
Below 54 Ω	C

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

B: OPEN IN CAN NO. 1 BUS MAIN WIRE (See OPEN IN CAN MAIN BUS LINE )

C: SHORT IN CAN NO. 1 BUS WIRE (See SHORT IN CAN BUS LINES )

A: Go to Next Step

CHECK CAN NO. 1 BUS WIRE (SHORT TO B+ IN CAN BUS WIRE)

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Value
E21-6 (CANH) - E21-16 (BAT)	Engine switch off	6 kΩ or higher
E21-14 (CANL) - E21-16 (BAT)	Engine switch off	6 kΩ or higher

Fig 2: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: SHORT TO B+ IN CAN NO. 1 BUS WIRE (See SHORT TO B+ IN CAN BUS LINE )

OK: Go to Next Step

CHECK CAN NO. 1 BUS WIRE (SHORT TO GND IN CAN BUS WIRE)

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Value
E21-4 (CG) - E21-6 (CANH)	Engine switch off	200 Ω or higher
E21-4 (CG) - E21-14 (CANL)	Engine switch off	200 Ω or higher

Fig 3: Identifying DLC3 Connector Terminals

NG: SHORT TO GND IN CAN NO. 1 BUS WIRE (See SHORT TO GND IN CAN BUS LINE )

OK: GO TO " HOW TO PROCEED WITH TROUBLESHOOTING "