Lexus ES manuals

Lexus ES: Power Trunk Lid does not Operate Using Kick Sensor Operation

Lexus ES (XZ10) Service Manual / Vehicle Exterior / Door / Hatch / Power Trunk Lid System (for Gasoline Model) / 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 oscillation.

When the kick door control sensor detects a kick operation, it sends an operation signal to the luggage closer motor assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before troubleshooting, make sure that the kick door control sensor is not damaged.
  • Before troubleshooting, be sure to read Precautions for Hands Free Power Trunk Lid.

    Click here

  • 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 and LIN communication system. First, confirm that there is no malfunction in the CAN communication system and LIN communication system. Refer to the How to Proceed with Troubleshooting procedure.

    Click here

  • Before troubleshooting, make sure that the "Kick Sensor Function" customize setting is set to "ON" (initial setting is "ON").

    Click here

  • After performing work, using the TECHSTREAM, read the Data List item "Kick Sensor Connection" and check that the kick door control sensor is connected.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • If the luggage closer motor assembly has been removed and installed or replaced, or if any of the connectors has been disconnected, initialize the power trunk lid system.

    Click here

  • Check that the smart access system (for Entry Function) is normally before performing the following procedure.

    Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Clear the DTCs.

Body Electrical > Back Door > Clear DTCs

(e) Check for DTCs.

Body Electrical > Back Door > Trouble Codes

OK:

DTC is not output.

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART

OK

2.

READ VALUE USING TECHSTREAM

(a) Enter the following menus: Body Electrical / Back Door / Data List.

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

Body Electrical > Back Door > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Kick Sensor Error

Status of the kick door control sensor error

Normal or Error

Normal: Kick door control sensor is normal

Error: Kick door control sensor is abnormal

-
Body Electrical > Back Door > Data List

Tester Display

Kick Sensor Error

OK:

On the Techstream, Normal is displayed.

NG

REPLACE KICK DOOR CONTROL SENSOR

OK

3.

READ VALUE USING TECHSTREAM

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

Click here

Body Electrical > Back Door > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Kick Sensor Detection

Status of the kick door control sensor detection

OFF or ON

OFF: Kick door control sensor not detecting a foot

ON: Kick door control sensor detecting a foot

-
Body Electrical > Back Door > Data List

Tester Display

Kick Sensor Detection

OK:

The Data List item changes according to the detection of the kick door control sensor.

NG

GO TO STEP 6

OK

4.

CHECK HARNESS AND CONNECTOR (KICK DOOR CONTROL SENSOR - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the S5 kick door control sensor connector.

(b) Disconnect the 3H instrument panel junction block assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S5-2 (LIN) - 3H-25

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.

Click here

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

(b) Remove the main body ECU (multiplex network body ECU) from instrument panel junction block assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3H-25 - MB-16(LIN2)

Always

Below 1 Ω
OK

REPLACE KICK DOOR CONTROL SENSOR

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

6.

CHECK HARNESS AND CONNECTOR (KICK DOOR CONTROL SENSOR - BATTERY AND BODY GROUND)

(a) Disconnect the S5 kick door control sensor connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S5-4 (GND) - Body ground

Always

Below 1 Ω

(c) Measure the voltage according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S5-1 (B) - Body ground

Always

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

7.

CHECK HARNESS AND CONNECTOR (KICK DOOR CONTROL SENSOR - LUGGAGE CLOSER MOTOR ASSEMBLY)

(a) Disconnect the R7 luggage closer motor assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S5-3 (KSOT) - R7-24 (KSIN)

Always

Below 1 Ω

S5-3 (KSOT) or R7-24 (KSIN) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

8.

CHECK LUGGAGE CLOSER MOTOR ASSEMBLY

(a) Remove the luggage closer motor assembly with the connector(s) still connected.

Click here

(b) Check the signal waveform according to the condition(s) in the table below.

Measurement Condition

Item

Condition

Tester Connection

R7-24 (KSIN) - Body ground

Tool Setting

2 V/DIV., 50 ms./DIV.

Vehicle Condition

Kick door control sensor not detecting a foot

OK:

The waveform displayed is as shown in the illustration.

*a

Component with harness connected

(Luggage Closer Motor Assembly)

*b

Waveform
OK

REPLACE KICK DOOR CONTROL SENSOR

NG

REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY

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