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Home >> Toyota >> 2005 >> Avalon XLS >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Laser Cruise Control System - Diagnostics >> Laser Sensor Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT LASER SENSOR 
    1. Disconnect the laser sensor connector.
    2. Measure the voltage according to the value(s) in LASER SENSOR  .

      Standard: 

      LASER SENSOR

      Tester connection Condition Specified value
      A36-5 (IGB) - Body ground Ignition SW ON (IG) 10 to 14 V
      Fig 1: Inspecting Laser Sensor
      G02977748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   3 
    2. OK: Go to next step. 
  2. CHECK WIRE HARNESS AND CONNECTOR (LASER SENSOR - ECM) 
    1. Disconnect the ECM A24 connector.
    2. Measure the resistance according to the value(s) in LASER SENSOR - ECM  .

      Standard: 

      LASER SENSOR - ECM

      Tester connection Condition Specified value
      A36-1 (LGND) -A24-31 (LGND) Always Below 1 Ω
      A36-1 (LGND) -Body ground Always 10 kΩ or higher
      A36-2(SGND) - Body ground Always Below 1 Ω
      Fig 2: Checking Wire Harness And Connector (Laser Sensor)
      G02977749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Checking Wire Harness And Connector (ECM)
      G02977750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE  ) 
  3. CHECK WIRE HARNESS AND CONNECTOR (LASER SENSOR - DISTANCE CONTROL ECU) 
    1. Disconnect the cruise control ECU (distance control ECU) connector.
    2. Measure the resistance according to the value(s) in LASER SENSOR - DISTANCE CONTROL ECU  .

      Standard: 

      LASER SENSOR - DISTANCE CONTROL ECU

      Tester connection Condition Specified value
      A20-13 (IGB) - A36-5 (IGB) Always Below 1 Ω
      A20-13 (IGB) - Body ground Always 10 kΩ or higher
      Fig 4: Checking Wire Harness And Connector (Laser Sensor)
      G02977751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Checking Wire Harness And Connector (Distance Control ECU)
      G02977752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE  ) 
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