Distance Control ECU Power Source Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Distance Control ECU Power Source Wiring Diagram

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CHECK DISTANCE CONTROL ECU

Disconnect the distance control ECU connector.

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

Standard voltage

TESTER CONNECTION AND SPECIFIED CONDITION CHART

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

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

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
J17-10 (SGND) - Body ground	Always	Below 1Ω
J17-12 (GND) - Body ground	Always	Below 1Ω

Fig 2: Checking Distance Control ECU

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE