Inspection Procedure
- INSPECT LASER SENSOR
- Disconnect the laser sensor connector.
- Measure the voltage according to the value(s) in the table below.
Standard:
LASER SENSOR CONNECTOR TERMINALS VOLTAGE SPECIFICATIONTester connection Condition Specified value L1-5 (IGB) - Body ground Ignition SW ON 10 to 14 V NG: Go to step 3
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:
ECM CONNECTOR TERMINALS RESISTANCE SPECIFICATIONTester connection Condition Specified value L1-1 (LGND) - E3-29 (LGND) Always Below 1 Ω L1-1 (LGND) - Body ground Always 10 kΩ or higher L1-2(SGND) - Body ground Always Below 1 Ω NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- CHECK WIRE HARNESS AND CONNECTOR (LASER 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:
LASER SENSOR AND DISTANCE CONTROL ECU TERMINALS RESISTANCE SPECIFICATIONTester connection Condition Specified value D2-13 (IGB) - L1-5 (IGB) Always Below 1 Ω D2-13 (IGB) - Body ground Always 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE