Millimeter Wave Radar Sensor Power Source Circuit: Procedure
WARNING: This page is about a different car, the 2012 Lexus GX 460. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR - BATTERY AND BODY GROUND) NOTE:
A DTC is stored when the following inspection is performed. Be sure to clear the DTC after performing this inspection.
- Disconnect the A12 millimeter wave radar sensor connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition A12-5 (IGB) - Body ground Engine switch on (IG) 11 to 14 V A12-5 (IGB) - Body ground Engine switch off Below 1 V - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A12-2 (SGND) - Body ground Always Below 1 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Millimeter Wave Radar Sensor Assembly)
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE