Inspection Procedure
- INSPECT MILLIMETER WAVE RADAR SENSOR ASSY
- Disconnect the millimeter wave radar sensor connector.
- Measure the voltage according to the value(s) in the table below.
Standard:
MILLIMETER WAVE RADAR SENSOR TERMINALS VOLTAGE SPECIFICATIONTester connection Condition Specified value M7-5 (IGB) - Body ground Ignition SW ON 10 to 14V NG: Go to step
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: Go To Next Step.
- CHECK WIRE HARNESS AND CONNECTOR
- Disconnect the ECM E3 connector.
- Measure the resistance according to the value(s) in the table below.
Standard:
MILLIMETER WAVE RADAR SENSOR TERMINALS RESISTANCE SPECIFICATIONTester connection Condition Specified value M7-1 (LGND) - E3-29 (LGND) Always Below 1 Ω M7-1 (LGND) - Body ground Always 10 kΩ or higher M7-2(SGND) - Body ground Always Below 1 Ω Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- CHECK WIRE HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR - DISTANCE CONTROL ECU)
- Disconnect the cruise control ECU (distance control ECU) connector.
- Measure the resistance according to the value(s) in the table below.
Standard:
MILLIMETER WAVE RADAR SENSOR AND DISTANCE CONTROL ECU TERMINALS RESISTANCETester connection Condition Specified value D2-13 (IGB) - M7-5 (IGB) Always Below 1 Ω D2-13 (IGB) - Body ground Always 10 kΩ or higher Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE