ROOF SUNSHADE SYSTEM, Diagnostic DTC:B2342

DTC Code DTC Name
B2342 Switch Failure

DESCRIPTION

This DTC is stored when the roof sunshade ECU (sliding roof drive gear assembly) detects that the roof sunshade switch (map light assembly) is stuck for 30 seconds or more.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2342

Switch Failure

Roof sunshade ECU (sliding roof drive gear assembly) detects roof sunshade switch (map light assembly) is stuck for 30 seconds or more.

  • Roof sunshade ECU (Sliding roof drive gear assembly)

  • Roof sunshade switch (Map light assembly)

  • Wire harness or connector

WIRING DIAGRAM

Refer to DTC B2341.

Click here

CAUTION / NOTICE / HINT

Note:

When the roof sunshade ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, it requires initialization.

Click here

PROCEDURE

  1. READ VALUE USING GTS

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

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

      Body Electrical > Sliding Roof > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Open Switch Failure(Past)

      Open switch failure signal (Past)

      ON or OFF

      ON: Roof sunshade open signal failure (Past)

      OFF: No roof sunshade open signal failure (Past)

      -

      Close Switch Failure(Past)

      Close switch failure signal (Past)

      ON or OFF

      ON: Roof sunshade close signal failure (Past)

      OFF: No roof sunshade close signal failure (Past)

      -

      Open Switch Failure(Current)

      Open switch failure signal (Current)

      ON or OFF

      ON: Roof sunshade open signal failure (Current)

      OFF: No roof sunshade open signal failure (Current)

      -

      Close Switch Failure(Current)

      Close switch failure signal (Current)

      ON or OFF

      ON: Roof sunshade close signal failure (Current)

      OFF: No roof sunshade close signal failure (Current)

      -

      Body Electrical > Sliding Roof > Data List

      Tester Display

      Open Switch Failure(Past)

      Close Switch Failure(Past)

      Open Switch Failure(Current)

      Close Switch Failure(Current)

      OK

      OFF appears on the GTS screen.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - BODY GROUND)

    1. Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.

    2. Disconnect the O8 roof sunshade switch (map light assembly) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      a1-7 (OPEN) - Body ground

      Always

      10 kΩ or higher

      a1-5 (CLOSE) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT ROOF SUNSHADE SWITCH (MAP LIGHT ASSEMBLY)

    1. B319626C01

      *a

      Component without harness connected

      (Roof Sunshade Switch (Map Light Assembly))

      Remove the roof sunshade switch (map light assembly).

      Click here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      12 (OPN) - 11 (GND)

      Open switch is pressed

      Below 1 Ω

      12 (OPN) - 11 (GND)

      Open switch is not pressed

      10 kΩ or higher

      13 (CLS) - 11 (GND)

      Close switch is pressed

      Below 1 Ω

      13 (CLS) - 11 (GND)

      Close switch is not pressed

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)

    Click here

    NG

    REPLACE ROOF SUNSHADE SWITCH (MAP LIGHT ASSEMBLY)

    Click here