Lexus NX: PBD Touch Sensor LH Circuit (B222A)

DESCRIPTION

This DTC is output when the multiplex network door ECU detects a power back door sensor assembly LH touch sensor malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B222A

PBD Touch Sensor LH Circuit

Multiplex network door ECU detects power back door sensor assembly LH touch sensor malfunction

  • Multiplex network door ECU
  • Power back door sensor assembly LH
  • Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.

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PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > Back Door > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > Back Door > Trouble Codes

OK:

DTC B222A is not output

OK

USE SIMULATION METHOD TO CHECK

NG

2.

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

PBD Touch Sensor (Left)

Power back door sensor assembly LH signal

ON, OFF or Open

ON: Power back door sensor assembly LH pressed

OFF: Power back door sensor assembly LH not pressed

Open: Power back door sensor assembly LH circuit open

-

Body Electrical > Back Door > Data List

Tester Display

PBD Touch Sensor (Left)

Result

Proceed to

On the Techstream screen, ON or OFF is displayed accordingly

A

On the Techstream screen, ON or OFF is not displayed accordingly or Open is displayed for power back door sensor assembly LH

B

A

REPLACE MULTIPLEX NETWORK DOOR ECU

B

3.

INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH

(a) Remove the power back door sensor assembly LH.

Click here

(b) Inspect the power back door sensor assembly LH.

Click here

NG

REPLACE POWER BACK DOOR SENSOR ASSEMBLY LH

OK

4.

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR SENSOR ASSEMBLY LH)

(a) Disconnect the Y26 multiplex network door ECU connector.

(b) Disconnect the Y9 power back door sensor assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Y26-26 (OSL) - Y9-1 (OSL)

Always

Below 1 Ω

Y26-24 (OSE) - Y9-2 (OSLE)

Always

Below 1 Ω

Y26-26 (OSL) or Y9-1 (OSL) - Body ground

Always

10 kΩ or higher

Y26-24 (OSE) or Y9-2 (OSLE) - Body ground

Always

10 kΩ or higher

OK

REPLACE MULTIPLEX NETWORK DOOR ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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