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Rear Window Defogger System Inspection [07/2015 - ]: Procedure

  1. VERIFY COMBINATION METER DTCS 
    1. Switch the ignition ON (engine off or on).
    2. Perform the DTC inspection for the combination meter using the Techstream.

      Refer to DTC CHECK / CLEAR [07/2015 - ]

      Body Electrical > Instrument Cluster > Trouble Codes 

    3. Is a DTC displayed?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    REPAIR THE MALFUNCTIONING LOCATION ACCORDING TO THE APPLICABLE DTC TROUBLESHOOTING. 

    1. Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2015 - ]

    Result:  1

    No 

    See step  2

  2. DETERMINE MALFUNCTIONING LOCATION BY PERFORMING PID/DATA MONITOR INSPECTION 
    1. Display the main body ECU PID [Rear Defogger Relay] using the Techstream.

      Refer to DATA LIST / ACTIVE TEST [07/2015 - ]

      Body Electrical > Body Control Module > Data List 

      Tester Display
      Rear Defogger Relay
    2. Turn the rear window defogger switch on.
    3. Is the PID value on?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  7

    Result:  1

    No 

    See step  3

  3. INSPECT REAR WINDOW DEFOGGER SWITCH CONDITION BY INSPECTING AIR CONDITIONING AMPLIFIER 
    1. Perform terminal voltage inspection at air conditioning amplifier terminal D12-14.

      Refer to INSPECTION [07/2015 - ]

    2. Is the voltage normal?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  24

    Result:  1

    Yes 

    See step  4

  4. INSPECT AIR CONDITIONING AMPLIFIER CIRCUIT FOR SHORT TO GROUND 
    1. Disconnect the combination meter connector.
    2. Verify that the air conditioning amplifier connector is disconnected.
    3. Inspect for continuity between air conditioning amplifier terminal D12-14 (vehicle wiring harness side) and body ground.
    4. Is there continuity?

      Result

      Result
      Yes
      No

    Result:  2

    Yes 

    See step  23

    Result:  1

    No 

    See step  5

  5. INSPECT AIR CONDITIONING AMPLIFIER CIRCUIT FOR OPEN CIRCUIT 
    1. Verify that the air conditioning amplifier connector and the combination meter connector are disconnected.
    2. Inspect for continuity between air conditioning amplifier terminal D12-14 (wiring harness side) and combination meter terminal D55-18 (wiring harness side).
    3. Is there continuity?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  22

    Result:  1

    Yes 

    See step  6

  6. INSPECT AIR CONDITIONING AMPLIFIER CIRCUIT FOR SHORT TO POWER SUPPLY 
    1. Verify that the air conditioning amplifier connector and the combination meter connector are disconnected.
    2. Connect the negative battery cable.

      Refer to INSTALLATION [07/2015 - ]

    3. Switch the ignition ON (engine off or on).
    4. Turn the rear window defogger switch on.
    5. Measure the voltage at air conditioning amplifier terminal D12-14 (vehicle wiring harness side).
    6. Is the voltage less than 1.0 V?

      Result

      Result
      Yes
      No

    Result:  1

    Yes 

    See step  20

    Result:  2

    No 

    See step  21

  7. INSPECT REAR WINDOW DEFOGGER RELAY 
    1. Switch the ignition OFF (LOCK).
    2. Disconnect the negative battery cable.

      Refer to REMOVAL [07/2015 - ]

    3. Remove the rear window defogger relay.

      Refer to INSPECTION [07/2015 - ]

    4. Inspect the rear window defogger relay.

      Refer to INSPECTION [07/2015 - ]

    5. Is the rear window defogger relay normal?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  19

    Result:  1

    Yes 

    See step  8

  8. INSPECT REAR WINDOW DEFOGGER RELAY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT 
    1. Verify that the rear window defogger relay is removed.
    2. Connect the negative battery cable.

      Refer to INSTALLATION [07/2015 - ]

    3. Measure the voltage at rear window defogger relay terminals 5 and 1 (vehicle wiring harness side).
    4. Is the voltage B+?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  18

    Result:  1

    Yes 

    See step  9

  9. INSPECT REAR WINDOW DEFOGGER CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT 
    1. Install the rear window defogger relay.
    2. Turn the rear window defogger switch on.
    3. Measure the voltage at rear window defogger terminal E23-1 (vehicle wiring harness side).
    4. Is the voltage B+?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  17

    Result:  1

    Yes 

    See step  10

  10. INSPECT REAR WINDOW DEFOGGER 
    1. Inspect the rear window defogger.

      Refer to REAR WINDOW DEFOGGER SYSTEM INSPECTION [07/2015 - ] 

    2. Is the rear window defogger normal?

      Result

      Result
      Yes
      No

    Result:  2

    No 

    See step  16

    Result:  1

    Yes 

    See step  11

  11. INSPECT MAIN BODY ECU CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT 
    1. Switch the ignition ON (engine off or on).
    2. Measure the voltage at main body ECU terminal 6C (vehicle wiring harness side).
    3. Is the voltage B+?

      Result

      Result
      Yes
      No

    Result:  1

    Yes 

    See step  14

    Result:  2

    No 

    See step  15

  12. VERIFY IF MALFUNCTION IS RESOLVED 
    1. Does the rear window defogger system operate normally?

      Result

      Result
      Yes
      No

    Result:  1

    Yes 

    EXPLAIN THE CONTENTS OF THE SERVICING TO THE CUSTOMER. 

    Result:  2

    No 

    See step  13

  13. IF THE MALFUNCTION HAS NOT BEEN RESOLVED, REPEAT THE INSPECTION FROM STEP 1. 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  1

  14. REPLACE THE MAIN BODY ECU, THEN GO TO THE NEXT STEP. 
    1. Refer to REMOVAL [07/2015 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  15. REFER TO THE WIRING DIAGRAM AND VERIFY IF THERE IS A COMMON CONNECTOR BETWEEN MAIN BODY ECU TERMINAL 6C AND REAR WINDOW DEFOGGER RELAY TERMINAL 2. 
    1. If there is a common connector:
      • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground or open circuit to determine the malfunctioning location.
      • Repair or replace the malfunctioning location.
    2. If there is no common connector:
      • Repair or replace the wiring harness which is shorted to ground or has an open circuit.
    3. After repair, go to the next step.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  16. REPAIR THE REAR WINDOW DEFOGGER, THEN GO TO STEP 12. 
    1. Refer to REPAIR [07/2015 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  17. REFER TO THE WIRING DIAGRAM AND VERIFY IF THERE IS A COMMON CONNECTOR BETWEEN REAR WINDOW DEFOGGER RELAY TERMINALS D12-14 AND REAR WINDOW DEFOGGER TERMINAL E23-1. 
    1. If there is a common connector:
      • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground or open circuit to determine the malfunctioning location.
      • Repair or replace the malfunctioning location.
    2. If there is no common connector:
      • Repair or replace the wiring harness which is shorted to ground or has an open circuit.
    3. After repair procedure, go to Step 12.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  18. INSPECT THE DEFOG 40 A FUSE. 
    1. If the fuse is blown:
      1. Refer to the wiring diagram and verify if there is a common connector between DEFOG 40 A fuse and rear window defogger relay terminals 5 and 1.
        1. If there is a common connector:
          1. Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
          2. Repair or replace the malfunctioning location.
        2. If there is no common connector:
          1. Repair or replace the wiring harness which is shorted to ground.
          2. Replace the fuse.
    2. If the fuse is damaged:
      1. Replace the fuse.
    3. If the fuse is normal:
      1. Refer to the wiring diagram and verify if there is a common connector between positive battery terminal and rear window defogger relay terminals 5 and 1.
        1. If there is a common connector:
          1. Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location
          2. Repair or replace the malfunctioning location.
      2. If there is no common connector:
        1. Repair or replace the wiring harness which has an open circuit.
    4. Go to Step 12.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  19. REPLACE THE REAR WINDOW DEFOGGER RELAY, THEN GO TO STEP 12. 
    1. Refer to INSPECTION [07/2015 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  20. REPLACE THE AIR CONDITIONING AMPLIFIER, THEN GO TO STEP 12. 
    1. Refer to REMOVAL [07/2015 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  21. REFER TO THE WIRING DIAGRAM AND VERIFY IF THERE IS A COMMON CONNECTOR BETWEEN AIR CONDITIONING AMPLIFIER TERMINAL D12-14 AND COMBINATION METER TERMINAL D55-18. 
    1. If there is a common connector:
      • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location.
      • Repair or replace the malfunctioning location.
    2. If there is no common connector:
      • Repair or replace the wiring harness which is shorted to the power supply.
    3. After repair procedure, go to Step 12.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  22. REFER TO THE WIRING DIAGRAM AND VERIFY IF THERE IS A COMMON CONNECTOR BETWEEN AIR CONDITIONING AMPLIFIER TERMINAL D12-14 AND COMBINATION METER TERMINAL D55-18. 
    1. If there is a common connector:
      • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
      • Repair or replace the malfunctioning location.
    2. If there is no common connector:
      • Repair or replace the wiring harness which has an open circuit.
    3. After repair procedure, go to Step 12.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  23. REFER TO THE WIRING DIAGRAM AND VERIFY IF THERE IS A COMMON CONNECTOR BETWEEN AIR CONDITIONING AMPLIFIER TERMINAL D12-14 AND COMBINATION METER TERMINAL D55-18. 
    1. If there is a common connector:
      • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
      • Repair or replace the malfunctioning location.
    2. If there is no common connector:
      • Repair or replace the wiring harness which is shorted to ground.
    3. After repair procedure, go to Step 12.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

  24. REPLACE THE AIR CONDITIONING AMPLIFIER, THEN GO TO STEP 12. 
    1. Refer to REMOVAL [07/2015 - ]

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  12

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