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Home >> Toyota >> 2009 >> Camry Hybrid >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/Window Glass (Hybrid) >> Window Defogger System >> Rear Window Defogger System does not Operate >> Inspection Procedure

Inspection Procedure

  1. CHECK FOR DTCs 
    1. Select the DTC check on Techstream to check for communication errors.

    Result 

    RESULT CHART

    Result Proceed to
    Not output DTC codes A
    Output DTC codes (LIN communication) B

    B:  GO TO MULTIPLEX COMMUNICATION SYSTEM

    A: GO to Next Step 

  2. PERFORM ACTIVE TEST BY TECHSTREAM 
    1. Select the Active Test, use Techstream to issue a control command, and then check the window defogger operation.

    Air Conditioner 

    AIR CONDITIONER ACTIVE TEST

    Tester Display Test Part Control Range Diagnostic Note
    Defogger Relay (Rear) Turns rear window defogger OFF/ON -

    OK:  GO to step  5

    NG: GO to Next Step 

  3. REPLACE AIR CONDITIONER CONTROL ASSEMBLY 
    1. Replace the air conditioner control assembly.
  4. CONFIRM REAR WINDOW DEFOGGER OPERATION 
    1. Turn the power switch on (IG), press the defogger switch, and check that the window defogger operates.

      OK: 

      System is normally 

    NG: REPLACE A/C AMPLIFIER ASSEMBLY 

    OK: END 

  5. PERFORM ACTIVE TEST BY TECHSTREAM 
    1. Select the Active Test, use Techstream to issue a control command, and then check the DEFOG relay operation.
    2. Check that operation sound of the RR DEF relay is heard.
    RESULT CHART

    Result Proceed to
    Relay operating sound is heard OK
    Relay operating sound is not heard NG

    OK:  GO to step  9

    NG: GO to Next Step 

  6. INSPECT RR DEF RELAY 

    See ON-VEHICLE INSPECTION .

    NG: REPLACE RR DEF RELAY 

    OK: GO to Next Step 

  7. CHECK WIRE HARNESS (RR DEF RELAY - BATTERY POSITIVE) 
    1. Disconnect the RR DEF relay.
      2. Fig 1: Identifying RR DEF Relay Terminal
      G04981170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value (s) in the table below.

      Standard voltage: 

      Engine room R/B, J/B 

    VOLTAGE SPECIFICATION

    Tester Connection Condition Specified Condition
    1 - Body ground Power switch on (IG) 10 to 14 V

    NG: REPAIR OR REPLACE A/C NO. 2 FUSE, HARNESS OR CONNECTOR 

    OK: GO to Next Step 

  8. CHECK WIRE HARNESS (RR DEF RELAY - A/C AMPLIFIER ASSEMBLY) 
    1. Disconnect the RR DEF relay and A/C amplifier assembly connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    2 - E38-38 Always Below 1 Ω
    2 - Body ground Always 10 kΩ or higher
    Fig 2: Identifying RR DEF Relay And A/C Amplifier Assembly Connector
    G04981171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE A/C AMPLIFIER ASSEMBLY 

  9. INSPECT RR DEF RELAY 

    See ON-VEHICLE INSPECTION .

    NG: REPLACE RR DEF RELAY 

    OK: GO to Next Step 

  10. CHECK WIRE HARNESS (RR DEF RELAY - BATTERY POSITIVE AND BODY GROUND) 
    1. Disconnect the RR DEF relay.
      2. Fig 3: Identifying RR DEF Relay Terminal
      G04981170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value (s) in the table below.

      Standard resistance: 

      Engine room R/B, J/B 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      4 - Body ground Always Below 1 Ω

      Standard voltage: 

      Engine room R/B, J/B 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      5 - Body ground Always 10 to 14 V

    NG: REPAIR OR REPLACE RR DEF FUSE, HARNESS OR CONNECTOR 

    OK: GO to Next Step 

  11. INSPECT NOISE FILTER 
    1. Disconnect the noise filter connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    N18-1 - N18-2 Always Below 1 Ω
    N18-1 - Body ground Always 10 kΩ or higher
    Fig 4: Identifying N18 Connector Terminal
    G04981173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE NOISE FILTER 

    OK: GO to Next Step 

  12. CHECK WIRE HARNESS (RR DEF RELAY - NOISE FILTER) 
    1. Disconnect the RR DEF relay and defogger wire connectors.
      2. Fig 5: Identifying RR DEF Relay And Defogger Wire Connectors
      G04981174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    3 - N18-1 Always Below 1 Ω
    3 - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO to Next Step 

  13. CHECK WIRE HARNESS (NOISE FILTER - DEFOGGER WIRE CONNECTOR) 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    N18-2 - N19-1 Always Below 1 Ω
    N18-2 - Body ground Always 10 kΩ or higher
    Fig 6: Identifying Noise Filter And Defogger Wire Connector
    G04981175Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO to Next Step 

  14. CHECK WIRE HARNESS (DEFOGGER WIRE CONNECTOR - BODY GROUND) 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    P1-1 - Body ground Always Below 1 Ω
    Fig 7: Identifying P1 Connector Terminal
    G04981176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPAIR OR REPLACE REAR WINDOW DEFOGGER WIRE 

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