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 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 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.

INSPECTION PROCEDURE

Note


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

  • When using the GTS with the engine switch off to troubleshoot:

    Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5-seconds intervals until communication between the GTS and vehicle begins.

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

Tech Tips

Since the power door lock control system has functions that use LIN communication system and CAN communication system, first confirm that there is no malfunction in the communication system by inspecting the LIN communication and CAN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

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 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 (DOOR CONTROL SWITCH) Click here

    C

    Go to ENTRY AND START SYSTEM (for Entry Function) Click here

    A

  2. READ VALUE USING GTS (LUGGAGE DOOR OPENING CANCEL SWITCH ASSEMBLY)


    1. Check the Data List for proper functioning of the luggage door opening cancel switch assembly Click here.

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

      ON: Luggage compartment door opener cancel switch is on

      OFF: Luggage compartment door opener cancel switch 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 (LUGGAGE DOOR OPENING SWITCH ASSEMBLY)


    1. Check the Data List for proper functioning of the luggage door opening cancel switch assembly Click here.

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

      ON: Luggage compartment door opener switch is on

      OFF: Luggage compartment door opener switch is off

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

    NG

    INSPECT LUGGAGE DOOR OPENING SWITCH ASSEMBLY Click here

    OK

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

  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 - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the N2 luggage door opening cancel switch assembly connector.

    2. Disconnect the N13 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
      N2-3 (B) - N13-8 (TSW) Always Below 1 Ω
      N2-4 (L) - Body ground Always Below 1 Ω
      N2-3 (B) or N13-8 (TSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  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 - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the N84 luggage door opening cancel switch assembly connector.

    2. Disconnect the N13 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
      N84-2 (B) - N13-5 (TMSW) Always Below 1 Ω
      N84-1 (L) - Body ground Always Below 1 Ω
      N84-2 (B) or N13-5 (TMSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  8. READ VALUE USING GTS (DOOR CONTROL SWITCH)


    1. Check the Data List for proper functioning of the door control switch Click here.

      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.

    NG

    INSPECT DOOR CONTROL SWITCH Click here

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

  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 AND BODY GROUND)


    1. Disconnect the a2 door control switch connector.

    2. Disconnect the U33 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
      a2-4 (CLS) - U33-4 (LDDN) Always Below 1 Ω
      a2- 3 (E) - Body ground Always Below 1 Ω
      a2-4 (CLS) or U33-4 (LDDN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here