Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

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

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified value	Result
D1-6 (CANH) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	54 to 69 Ω	OK
D1-6 (CANH) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	69 Ω or higher	NG-A
D1-6 (CANH) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	Below 54 Ω	NG-B

NG-A: SEE CHECK CAN MAIN BUS LINE FOR DISCONNECTION

NG-B: SEE CHECK CAN BUS LINES FOR SHORT CIRCUIT

OK: GO TO NEXT STEP.

CHECK CAN BUS LINE FOR SHORT TO +B

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Fig 2: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified value
D1-6 (CANH) - D1-16 (BAT)	IG switch OFF Stop light switch OFF	1 MΩ or higher
D1-14 (CANL) - D1-16 (BAT)	IG switch OFF Stop light switch OFF	1 MΩ or higher

NG: SEE CHECK CAN BUS LINE FOR SHORT TO +B

OK: GO TO NEXT STEP.

CHECK CAN BUS LINE FOR SHORT TO GND

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Fig 3: Identifying DLC3 Connector Terminals

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified value
D1-4 (CG) - D1-6 (CANH)	IG switch OFF Stop light switch OFF	3 kΩ or higher
D1-4 (CG) - D1-14 (CANL)	IG switch OFF Stop light switch OFF	3 kΩ or higher

NG: SEE CHECK CAN BUS LINE FOR SHORT TO GND

OK: GO TO HOW TO PROCEED WITH TROUBLESHOOTING