Millimeter Wave Radar Sensor Power Source Circuit: Procedure

Fig 1: Checking Millimeter Wave Radar Sensor Assembly (IGB Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the millimeter wave radar sensor assembly connector.
2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A2-5 (IGB) - A2-2 (SGND)	Power switch on (IG)	10 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Millimeter Wave Radar Sensor Assembly)

4. Reconnect the millimeter wave radar sensor assembly connector.

NG → See step   2 

OK → See step   3 

1. Disconnect the millimeter wave radar sensor assembly connector.
   Fig 2: Checking Harness And Connector (Millimeter Wave Radar Sensor Assembly - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A2-2 (SGND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Millimeter Wave Radar Sensor Assembly)

3. Reconnect the millimeter wave radar sensor assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - BODY GROUND) 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - IG1 NO. 1 RELAY)