Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001FQQ0
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 02/2019]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/ Occupant Classification System): B1635,B1637; Curtain Shield Airbag Sensor (LH); 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]

DTC

B1635

Curtain Shield Airbag Sensor (LH)

DTC

B1637

Curtain Shield Airbag Sensor Lost Communication (LH)

DESCRIPTION

The side collision sensor LH circuit consists of the airbag ECU assembly, side airbag pressure sensor LH and No. 2 side airbag sensor assembly LH.

The No. 2 side airbag sensor assembly LH detects impacts to the vehicle and send signals to the airbag ECU assembly to determine if the SRS should be deployed.

These DTCs are stored when a malfunction is detected in the No. 2 side airbag sensor assembly LH or airbag ECU assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Test Mode / Check Mode

B1635

Curtain Shield Airbag Sensor (LH)

Either condition is met:

  • A No. 2 side airbag sensor assembly LH malfunction.
  • An airbag ECU assembly malfunction.
  • No. 2 side airbag sensor assembly LH
  • Airbag ECU assembly

Comes on

Not applicable

B1637

Curtain Shield Airbag Sensor Lost Communication (LH)

Either condition is met:

  • A No. 2 side airbag sensor assembly LH malfunction.
  • An airbag ECU assembly malfunction.
  • No. 2 side airbag sensor assembly LH
  • Airbag ECU assembly

Comes on

Not applicable

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.

    Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

  • After replacing the airbag ECU assembly, refer to initialization.

    Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

PROCEDURE

1.

CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH

(a) Turn the ignition switch off.

*1

No. 2 Side Airbag Sensor Assembly RH

*2

Airbag ECU Assembly

(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(c) Interchange the No. 2 side airbag sensor assembly LH with RH and connect the connectors to them.

(d) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory.

Click here 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/ Occupant Classification System): DTC CHECK / CLEAR

Body Electrical > SRS Airbag > Clear DTCs

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 60 seconds.

(i) Check for DTCs.

Click here 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/ Occupant Classification System): DTC CHECK / CLEAR

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Codes other than DTC B1630, B1632, B1635 and B1637 may be output at this time, but they are not related to this check.

(j) Turn the ignition switch off.

(k) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

(l) Return the No. 2 side airbag sensor assembly RH and LH to their original positions and connect the connectors to them.

DTC B1635 or B1637 is output

REPLACE AIRBAG ECU ASSEMBLY

DTC B1630 or B1632 is output

REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH

DTCs B1630, B1632, B1635 and B1637 are not output

USE SIMULATION METHOD TO CHECK