Distance Control ECU Communication Stop Mode: Procedure

WARNING: This page is about a different car, the 2009 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OPEN IN CAN BUS WIRE (DISTANCE CONTROL ECU BRANCH LINE)

Turn the engine switch off.
Disconnect the distance control ECU connector (J17).

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

Fig 1: Identifying Distance Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Value
J17-8 (CANH) - J17-9 (CANL)	Engine switch off	54 to 69 Ω

NG → REPAIR OR REPLACE DISTANCE CONTROL ECU BRANCH WIRE OR CONNECTOR (CAN-H, CAN-L)

OK: Go to next step

CHECK WIRE HARNESS (+B, GND)

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

Fig 2: Identifying Distance Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Value
J17-12 (GND) - Body ground	Always	Below 1 Ω

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

Standard Voltage

Tester Connection	Condition	Specified Value
J17-1 (+B) - Body ground	Engine switch on (IG)	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 3

REPLACE DISTANCE CONTROL ECU. Refer to REMOVAL