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
.gif)
-
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 | - |
| 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 | .gif) | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
.gif)
| 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) |
|
| 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 |
READ NEXT:
Power Trunk Lid does not Operate Using Kick Sensor Operation
DESCRIPTION The kick door control sensor receives vehicle speed, IG and ACC signals from the main body ECU (multiplex network body ECU) via LIN communication and uses the information to stop sensor os
Power Trunk Lid does not Operate Using Outside Switch
DESCRIPTION The door control switch signal is sent to the luggage closer motor assembly. If the power trunk lid does not operate using the door control switch, a door control switch circuit malfunctio
SEE MORE:
Terminals Of Ecu
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (a) Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors. (b) Measure the voltage and resistance according to the value(s) in t
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. SECURE VEHICLE (a) Fully apply the parking brake and chock a wheel. CAUTION:
Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move,
