Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: PBD Touch Sensor RH Circuit (B222B)

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Exterior / Door / Hatch / Power Back Door System (w/ Outside Door Control Switch) / PBD Touch Sensor RH Circuit (B222B)

DESCRIPTION

This DTC is stored when the multiplex network door ECU detects a malfunction of the power back door sensor assembly RH touch sensor.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B222B

PBD Touch Sensor RH Circuit

Multiplex network door ECU detects power back door sensor assembly RH touch sensor malfunction
  • Multiplex network door ECU
  • Power back door sensor assembly RH
  • Wire harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors have been disconnected, initialize the power back door system.

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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) Enter the following menus: Body Electrical / Back Door / Trouble Codes.

(e) Clear the DTCs.

Body Electrical > Back Door > Clear DTCs

(f) Recheck for DTCs.

Body Electrical > Back Door > Trouble Codes

OK:

DTC B222B is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

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

PBD Touch Sensor (Right)

Power back door sensor assembly RH signal

OFF, ON or Open

OFF: Power back door sensor assembly RH not pressed

ON: Power back door sensor assembly RH pressed

Open: Power back door sensor assembly RH circuit open

-
Body Electrical > Back Door > Data List

Tester Display

PBD Touch Sensor (Right)

Result

Proceed to

On the Techstream screen, OFF or ON is displayed accordingly

A

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

B
A

REPLACE MULTIPLEX NETWORK DOOR ECU

B

3.

INSPECT POWER BACK DOOR SENSOR ASSEMBLY RH

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

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

Click here

NG

REPLACE POWER BACK DOOR SENSOR ASSEMBLY RH

OK

4.

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

(a) Disconnect the Z16 multiplex network door ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

Z16-6 (OSR) - Z14-1 (OSR)

Always

Below 1 Ω

Z16-24 (OSE) - Z14-2 (OSRE)

Always

Below 1 Ω

Z16-6 (OSR) or Z14-1 (OSR) - Body ground

Always

10 kΩ or higher

Z16-24 (OSE) or Z14-2 (OSRE) - Body ground

Always

10 kΩ or higher
OK

REPLACE MULTIPLEX NETWORK DOOR ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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