Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000002FQ26
Model Year Start: 2024 Model: RAV4 Prod Date Range: [10/2023 -           ]
Title: DOOR / HATCH: POWER BACK DOOR SYSTEM: B222631; PBD Unit Pulse Sensor LH Circuit No Signal; 2024 MY RAV4 RAV4 HV [10/2023 -        ]

DTC

B222631

PBD Unit Pulse Sensor LH Circuit No Signal

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

B222631

PBD Unit Pulse Sensor LH Circuit No Signal

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

Click here 2024 MY RAV4 RAV4 HV [10/2023 -        ]; DOOR / HATCH: POWER BACK DOOR SYSTEM: INITIALIZATION

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Back Door > Clear DTCs

NEXT

2.

REPRODUCE DTC

(a) Perform a power back door open or close operation.

NEXT

3.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Back Door > Trouble Codes

Result

Proceed to

B222631 is output

A

B222631 is not output

B
B

USE SIMULATION METHOD TO CHECK

A

4.

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

(a) Disconnect the R27 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

R27-11 (DSG) - R21-4 (DSG)

Always

Below 1 Ω

R27-4 (DSV) - R21-3 (DSV)

Always

Below 1 Ω

R27-5 (DS2) - R21-6 (DS2)

Always

Below 1 Ω

R27-13 (DS1) - R21-5 (DS1)

Always

Below 1 Ω

R27-11 (DSG) or R21-4 (DSG) - Body ground

Always

10 kΩ or higher

R27-4 (DSV) or R21-3 (DSV) - Body ground

Always

10 kΩ or higher

R27-5 (DS2) or R21-6 (DS2) - Body ground

Always

10 kΩ or higher

R27-13 (DS1) or R21-5 (DS1) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

CHECK MULTIPLEX NETWORK DOOR ECU

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

(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

Ignition switch off

7 V or higher

R21-6 (DS2) - Body ground

Ignition switch off

7 V or higher

R21-3 (DSV) - Body ground

Ignition switch off

7 V or higher
NG

REPLACE MULTIPLEX NETWORK DOOR ECU

OK

6.

CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH

(a) Using an oscilloscope, check the waveform of each terminal from the rear of the 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: R27-13 (DS1) - Body ground
  • CH2: R27-5 (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.
  • The wave height changes in accordance with the auxiliary battery voltage.
OK

REPLACE MULTIPLEX NETWORK DOOR ECU

NG

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH