Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000024AU3
Model Year Start: 2023 Model: Camry Prod Date Range: [08/2022 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B166D,B166E; Lost Communication with Front Door Pressure Sensor RH; 2023 - 2024 MY Camry [08/2022 -        ]

DTC

B166D

Lost Communication with Front Door Pressure Sensor RH

DTC

B166E

Front Door Pressure Sensor RH Initialization Incomplete

DESCRIPTION

The side collision sensor RH circuit (bus 1) consists of the airbag sensor assembly and door side airbag sensor RH.

The door side airbag sensor RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the side collision sensor RH circuit (bus 1).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Test Mode / Check Mode

B166D

Lost Communication with Front Door Pressure Sensor RH
  • The airbag sensor assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit (bus 1).
  • Door side airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front door wire RH
  • Door side airbag sensor RH
  • Airbag sensor assembly

Comes on

Does not apply to test/check mode

B166E

Front Door Pressure Sensor RH Initialization Incomplete
  • The airbag sensor assembly detects a line short, short to ground or B+, or an open in the side collision sensor RH circuit (bus 1).
  • Door side airbag sensor RH malfunction
  • Airbag sensor assembly malfunction
  • Floor wire
  • Front door wire RH
  • Door side airbag sensor RH
  • Airbag sensor assembly

Comes on

Does not apply to test/check mode

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. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

Click here 2020 - 2024 MY Camry [03/2020 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1.

CHECK CONNECTION OF CONNECTORS

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(c) Check that the connectors are properly connected to the door side airbag sensor RH and airbag sensor assembly. Also check that the connectors that link the floor wire and front door wire RH are properly connected.

OK:

The connectors are properly connected.

NG

CONNECT CONNECTORS PROPERLY
OK

2.

CHECK CONNECTORS

(a) Disconnect the connectors from the door side airbag sensor RH and airbag sensor assembly. Also disconnect the connectors that link the floor wire and front door wire RH.

(b) Check that the terminals of the connectors are not deformed or damaged.

OK:

The terminals are not deformed or damaged.

NG

REPLACE FLOOR WIRE OR FRONT DOOR WIRE RH
OK

3.

CHECK WIRE HARNESS

(a) Connect the connectors that link the floor wire and front door wire RH.

*1

Door Side Airbag Sensor RH

*2

Airbag Sensor Assembly

*3

Front Door Wire RH

*4

Floor Wire

*5

Service Wire

*a

Front view of wire harness connector

(to Airbag Sensor Assembly)

*b

Front view of wire harness connector

(to Door Side Airbag Sensor RH)

(b) Connect the cable to the negative (-) battery terminal.

(c) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

N12-1 (BDR-) - Body ground

Ignition switch ON

Below 1 V

N12-2 (BDR+) - Body ground

Ignition switch ON

Below 1 V

(e) Turn the ignition switch off.

(f) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(g) Using a service wire, connect terminals 25 (BBR+) and 26 (BBR-) of connector B.

NOTICE:

Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N12-1 (BDR-) - N12-2 (BDR+)

Always

Below 1 Ω

(i) Disconnect the service wire from connector B.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N12-1 (BDR-) - N12-2 (BDR+)

Always

1 MΩ or higher

N12-1 (BDR-) - Body ground

Always

1 MΩ or higher

N12-2 (BDR+) - Body ground

Always

1 MΩ or higher
NG

GO TO STEP 5

OK

4.

CHECK DOOR SIDE AIRBAG SENSOR RH

(a) Connect the connector to the airbag sensor assembly.

*1

Door Side Airbag Sensor LH

*2

Airbag Sensor Assembly

(b) Interchange the door side airbag sensor RH with LH and connect the connectors.

(c) Connect the cable to the negative (-) battery terminal.

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

(e) Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs

(f) Turn the ignition switch off.

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

(h) Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Codes other than DTCs B166D, B166E, B167B and B167C may be output at this time, but they are not related to this check.

Result

Proceed to

DTC B166D or B166E is output.

A

DTC B167B or B167C is output.

B

DTCs B166D, B166E, B167B and B167C are not output.

C

(i) Turn the ignition switch off.

(j) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(k) Return the door side airbag sensor RH and LH to their original positions and connect the connectors.

A

REPLACE AIRBAG SENSOR ASSEMBLY

B

REPLACE DOOR SIDE AIRBAG SENSOR RH

C

USE SIMULATION METHOD TO CHECK

5.

CHECK FLOOR WIRE

(a) Disconnect the floor wire connector from the front door wire RH.

*1

Door Side Airbag Sensor RH

*2

Airbag Sensor Assembly

*3

Front Door Wire RH

*4

Floor Wire

*5

Service Wire

-

-

*a

Front view of wire harness connector

(to Airbag Sensor Assembly)

*b

Front view of wire harness connector

(to Front Door Wire RH)

(b) Connect the cable to the negative (-) battery terminal.

(c) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

NR1-23 (BDR+) - Body ground

Ignition switch ON

Below 1 V

NR1-41 (BDR-) - Body ground

Ignition switch ON

Below 1 V

(e) Turn the ignition switch off.

(f) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(g) Using a service wire, connect terminals 25 (BBR+) and 26 (BBR-) of connector B.

NOTICE:

Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

NR1-23 (BDR+) - NR1-41 (BDR-)

Always

Below 1 Ω

(i) Disconnect the service wire from connector B.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

NR1-23 (BDR+) - NR1-41 (BDR-)

Always

1 MΩ or higher

NR1-23 (BDR+) - Body ground

Always

1 MΩ or higher

NR1-41 (BDR-) - Body ground

Always

1 MΩ or higher
OK

REPLACE FRONT DOOR WIRE RH
NG

REPLACE FLOOR WIRE