POWER TRUNK LID SYSTEM Power Trunk Lid does not Operate

DESCRIPTION

The main body ECU (multiplex network body ECU) continuously monitors the luggage door opening cancel switch assembly. When the luggage door opening cancel switch assembly is OFF, a luggage door opening switch assembly signal is sent to the luggage closer motor assembly from the main body ECU (multiplex network body ECU) via CAN communication. This actuates the power trunk opener operation, which opens the luggage compartment door. When the door control switch is on, the luggage closer motor assembly actuates the power trunk closer operation. When the electrical key transmitter sub-assembly is held, and the luggage electrical key switch is on or the luggage door open switch on the electrical key transmitter sub-assembly switch is pressed, the luggage closer motor assembly actuates the power trunk lid opener operation.

WIRING DIAGRAM

Refer to the "System Diagram" Click here.

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • The power trunk lid system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK POWER TRUNK LID SYSTEM


    1. Check the power trunk lid system Click here.

      Result
      Result Proceed to
      There is a malfunction when the luggage door opening cancel switch assembly or luggage door opening switch assembly is operated. A
      There is a malfunction when the door control switch is operated. B
      There is a malfunction when the luggage electrical key switch or electrical key transmitter sub-assembly is operated. C

    B

    READ VALUE USING GTS Click here

    C

    GO TO SMART ENTRY AND START SYSTEM (for Entry Function) Click here

    A

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Trunk Main SW Luggage door opening cancel switch assembly signal / ON or OFF

      ON: Luggage door opening cancel switch assembly is on

      OFF: Luggage door opening cancel switch assembly is off

      		 -
      OK
      On GTS screen, each item changes between ON and OFF as shown in above chart.

    NG

    INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY Click here

    OK

  3. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Trunk/BDoor Open SW Luggage door opening switch assembly signal / ON or OFF

      ON: Luggage door opening switch assembly is on

      OFF: Luggage door opening switch assembly is off

      		 -
      OK
      On GTS screen, each item changes between ON and OFF as shown in above chart.

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

  4. INSPECT LUGGAGE DOOR OPENING SWITCH ASSEMBLY


    1. Remove the luggage door opening switch assembly Click here.

    2. Insect the luggage door opening switch assembly Click here.


    NG

    REPLACE LUGGAGE DOOR OPENING SWITCH ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING SWITCH ASSEMBLY - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the H69 luggage door opening cancel switch assembly connector.

    2. Disconnect the H9 main body ECU (multiplex network body ECU) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H69-6 (B) - H9-5 (TSW) Always Below 1 Ω
      H69-3 (L) - Body ground Always Below 1 Ω
      H69-6 (B) or H9-5 (TSW) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY


    1. Remove the luggage door opening cancel switch assembly Click here.

    2. Inspect the luggage door opening cancel switch assembly Click here.


    NG

    REPLACE LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the H74 luggage door opening cancel switch assembly connector.

    2. Disconnect the H9 main body ECU (multiplex network body ECU) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H74-2 (B) - H9-11 (TMSW) Always Below 1 Ω
      H74-1 (L) - Body ground Always Below 1 Ω
      H74-2 (B) or H9-11 (TMSW) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Data List.

    5. Read the Data List according to the display on the GTS.

      Back Door
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      PBD Close SW Door control switch signal / ON or OFF

      ON: Door control switch is on

      OFF: Door control switch is off

      		 When this item is abnormal, there is a problem with the door control switch or related parts.
      OK
      On GTS screen, each item changes between ON and OFF as shown in above chart.

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

    NG

  9. INSPECT DOOR CONTROL SWITCH


    1. Remove the door control switch Click here.

    2. Inspect the door control switch Click here.


    NG

    REPLACE DOOR CONTROL SWITCH Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH - LUGGAGE CLOSER MOTOR ASSEMBLY AND BODY GROUND)


    1. Disconnect the U15 door control switch connector.

    2. Disconnect the U16 luggage closer motor assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      U15-4 (CLS) - U16-4 (LDDN) Always Below 1 Ω
      U15- 3 (E) - Body ground Always Below 1 Ω
      U15-4 (CLS) or U16-4 (LDDN) - Body ground Always 10 kΩ or higher

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR