Millimeter Wave Radar Sensor Power Source Circuit [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY (IGB VOLTAGE)
- Disconnect the A55 millimeter wave radar sensor assembly connector.
- Turn the power switch on (IG).
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A55-5 (IGB) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Millimeter Wave Radar Sensor Assembly) - Turn the power switch off.
- Reconnect the A55 millimeter wave radar sensor assembly connector.
NG → REPAIR OR REPLACE POWER SOURCE CIRCUIT
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - BODY GROUND)
- Disconnect the A55 millimeter wave radar sensor assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition A55-2 (SGND) - Body ground Always Below 1 Ω - Reconnect the A55 millimeter wave radar sensor assembly connector.
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 3
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ]