Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001FQO7
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [11/2018 - 10/2023]
Title: DOOR / HATCH: POWER BACK DOOR SYSTEM (for HV Model): B2226; PBD Unit Pulse Sensor LH Circuit; 2019 - 2023 MY RAV4 HV [11/2018 - 10/2023]

DTC

B2226

PBD Unit Pulse Sensor LH Circuit

DESCRIPTION

This DTC is output when the multiplex network door ECU detects a power back door unit assembly set LH pulse malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2226

PBD Unit Pulse Sensor LH Circuit

Multiplex network door ECU detects power back door unit assembly set LH pulse malfunction
  • Multiplex network door ECU
  • Power back door unit assembly set 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.

Click here 2019 - 2023 MY RAV4 HV [11/2018 - 10/2023]; DOOR / HATCH: POWER BACK DOOR SYSTEM (for HV Model): INITIALIZATION

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Click here 2019 - 2023 MY RAV4 HV [11/2018 - 10/2023]; DOOR / HATCH: POWER BACK DOOR SYSTEM (for HV Model): DTC CHECK / CLEAR

Body Electrical > Back Door > Clear DTCs

(b) Check for DTCs.

Click here 2019 - 2023 MY RAV4 HV [11/2018 - 10/2023]; DOOR / HATCH: POWER BACK DOOR SYSTEM (for HV Model): DTC CHECK / CLEAR

Body Electrical > Back Door > Trouble Codes

OK:

DTC B2226 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

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

(a) Disconnect the R18 multiplex network door ECU connector.

(b) Disconnect the R21 power back door unit assembly set LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R18-21 (DSG) - R21-4 (DSG)

Always

Below 1 Ω

R18-25 (DSV) - R21-3 (DSV)

Always

Below 1 Ω

R18-2 (DS2) - R21-6 (DS2)

Always

Below 1 Ω

R18-1 (DS1) - R21-5 (DS1)

Always

Below 1 Ω

R18-21 (DSG) or R21-4 (DSG) - Body ground

Always

10 kΩ or higher

R18-25 (DSV) or R21-3 (DSV) - Body ground

Always

10 kΩ or higher

R18-2 (DS2) or R21-6 (DS2) - Body ground

Always

10 kΩ or higher

R18-1 (DS1) or R21-5 (DS1) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK MULTIPLEX NETWORK DOOR ECU

(a) Disconnect the power back door unit assembly set LH connector.

*a

Front view of wire harness connector

(to Power Back Door Unit Assembly Set LH)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R21-4 (DSG) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

R21-5 (DS1) - Body ground

Always

7 V or higher

R21-6 (DS2) - Body ground

Always

7 V or higher

R21-3 (DSV) - Body ground

Always

7 V or higher
NG

REPLACE MULTIPLEX NETWORK DOOR ECU

OK

4.

CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH

(a) Using an oscilloscope, check the waveform of each terminal from the rear of the R18 multiplex network door ECU connector.

*a

Component with harness connected

(Multiplex Network Door ECU)

*b

Waveform (CH1)

*c

Waveform (CH2)

-

-

Measurement Condition:

Item

Condition

Tester Connection
  • CH1: R18-1 (DS1) - Body ground
  • CH2: R18-2 (DS2) - Body ground

Tool setting

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

Vehicle condition

Open and close the back door by hand.

HINT:

The period changes in accordance to the speed at which the back door is opened and closed by hand.

OK:

The waveform displayed is as shown in the illustration.

OK

REPLACE MULTIPLEX NETWORK DOOR ECU

NG

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH