Lexus ES manuals

Lexus ES: Power Trunk Lid does not Operate Using Cabin Switch

DESCRIPTION

The trunk and fuel switch assembly (luggage compartment door opening switch) signal is sent to the luggage closer motor assembly.

If the power trunk lid does not operate using the trunk and fuel (luggage compartment door opening switch), a trunk and fuel (luggage compartment door opening switch) circuit malfunction is a possible cause.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Click here

  • 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

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Trunk/BDoor Open SW

Trunk and fuel switch assembly (luggage compartment door opening switch) signal

OFF or ON

OFF: Trunk and fuel switch assembly (luggage compartment door opening switch) off

ON: Trunk and fuel switch assembly (luggage compartment door opening switch) on

-

Body Electrical > Main Body > Data List

Tester Display

Trunk/BDoor Open SW

OK:

The Data List item changes according to the operation of the trunk and fuel switch assembly (luggage compartment door opening switch).

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

2.

INSPECT TRUNK AND FUEL SWITCH ASSEMBLY (LUGGAGE COMPARTMENT DOOR OPENING SWITCH)

(a) Remove the trunk and fuel switch assembly (luggage compartment door opening switch).

Click here

(b) Inspect the trunk and fuel switch assembly (luggage compartment door opening switch).

Click here

NG

REPLACE TRUNK AND FUEL SWITCH ASSEMBLY (LUGGAGE COMPARTMENT DOOR OPENING SWITCH)

OK

3.

CHECK HARNESS AND CONNECTOR (TRUNK AND FUEL SWITCH ASSEMBLY (LUGGAGE COMPARTMENT DOOR OPENING SWITCH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the G38 main body ECU (multiplex network body ECU) connector.

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

Tester Connection

Condition

Specified Condition

G30-4 (B) - G38-4 (TSW)

Always

Below 1 Ω

G30-3 (L) - Body ground

Always

Below 1 Ω

G30-4 (B) or G38-4 (TSW) - Body ground

Always

10 kΩ or higher

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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