LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2008 >> Sienna CE >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Park Assist/Monitoring >> Intuitive Parking Assist System >> Indicator Circuit >> Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - AIR CONDITIONER AMPLIFIER) 
    1. Disconnect the connectors from the clearance warning ECU C9 and air conditioner amplifier connector A10 or A11.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      BK - L5 Always Below 1 Ω
      RL - L3 Always Below 1 Ω
      FL - L4 Always Below 1 Ω
      FR - L2 Always Below 1 Ω
      RR - L1 Always Below 1 Ω
      OP - L6 Always Below 1 Ω
      BK - Body ground Always 10 kΩ or higher
      RL - Body ground Always 10 kΩ or higher
      FL - Body ground Always 10 kΩ or higher
      FR - Body ground Always 10 kΩ or higher
      RR - Body ground Always 10 kΩ or higher
      OP - Body ground Always 10 kΩ or higher
      3. Fig 1: Checking Harness And Connector (Clearance Warning ECU - Air Conditioner Amplifier)
      G05141585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  2. INSPECT INDICATOR 
    1. Remove the integration control & panel assembly with the connectors being connected.
    2. Using a service wire, ground each terminal of the integration control & panel assembly connector.
    3. Turn the ignition switch ON.
    4. Check that each LED comes on.
      INDICATORS REFERENCE

      Indicators that come on The terminals to which the service wire connects
      Power indicator OP
      Back sonar BK
      Clearance sonar front RH FR
      Clearance sonar front LH FL
      Clearance sonar rear RH RR
      Clearance sonar rear LH RL

      Result 

      RESULT REFERENCE

      Result Proceed to
      OK A
      NG B (Auto A/C)
      NG C (Manual A/C)
      5. Fig 2: Inspecting Indicator
      G05141586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: Go to step 3 

    C:  Go to step  4

    A: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

  3. INSPECT PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY 

    OK: Malfunction disappears. 

    NG: REPLACE AIR CONDITIONER AMPLIFIER 

    OK: REPLACE PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY 

  4. INSPECT INTEGRATION PANEL SUB-ASSEMBLY 
    1. Check that the malfunction disappears when a known good integration panel sub-assembly is installed.

      OK: Malfunction disappears. 

    NG: REPLACE AIR CONDITIONER AMPLIFIER 

    OK: REPLACE INTEGRATION PANEL SUB-ASSEMBLY 

scientia non olet · About LEMON Manuals