Supplemental Restraint System. Dtc B1815/54 Short In Front Passenger Side Squib 2Nd Step Circuit

Restraints. Camry. Acv40 Gsv40

Supplemental Restraint System. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FRONT PASSENGER AIRBAG ASSEMBLY (FRONT PASSENGER SIDE SQUIB 2ND STEP)

CHECK CONNECTOR

CHECK FRONT PASSENGER SIDE SQUIB 2ND STEP CIRCUIT

CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK INSTRUMENT PANEL WIRE

CHECK INSTRUMENT PANEL WIRE ASSEMBLY

DTC B1815/54 Short in Front Passenger Side Squib 2nd Step Circuit

DTC B1816/54 Open in Front Passenger Side Squib 2nd Step Circuit

DTC B1817/54 Short to GND in Front Passenger Side Squib 2nd Step Circuit

DTC B1818/54 Short to B+ in Front Passenger Side Squib 2nd Step Circuit

DESCRIPTION

The front passenger side squib 2nd step circuit consists of the center airbag sensor assembly and the front passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the front passenger side squib 2nd step circuit.

DTC No.	DTC Detecting Condition	Trouble Area
B1815/54	The center airbag sensor assembly receives a line short circuit signal 5 times in the front passenger side squib 2nd step circuit during primary check. Front passenger side squib 2nd step malfunction Center airbag sensor assembly malfunction	Instrument panel wire Instrument panel wire assembly Front passenger airbag assembly (Front passenger side squib 2nd step) Center airbag sensor assembly
B1816/54	The center airbag sensor assembly receives an open circuit signal in the front passenger side squib 2nd step circuit for 2 seconds. Front passenger side squib 2nd step malfunction Center airbag sensor assembly malfunction	Instrument panel wire Instrument panel wire assembly Front passenger airbag assembly (Front passenger side squib 2nd step) Center airbag sensor assembly
B1817/54	The center airbag sensor assembly receives a short circuit to ground signal in the front passenger side squib 2nd step circuit for 0.5 seconds. Front passenger side squib 2nd step malfunction Center airbag sensor assembly malfunction	Instrument panel wire Instrument panel wire assembly Front passenger airbag assembly (Front passenger side squib 2nd step) Center airbag sensor assembly
B1818/54	The center airbag sensor assembly receives a short circuit to B+ signal in the front passenger side squib 2nd step circuit for 0.5 seconds. Front passenger side squib 2nd step malfunction Center airbag sensor assembly malfunction	Instrument panel wire Instrument panel wire assembly Front passenger airbag assembly (Front passenger side squib 2nd step) Center airbag sensor assembly

WIRING DIAGRAM

Camry. Acv40 Gsv40.Supplemental Restraint System.Airbag System.
Dtc
B1815/54 Short In Front Passenger Side Squib 2Nd Step Circuit

INSPECTION PROCEDURE

HINT:

Perform the simulation method by selecting "check mode" (signal check) with the intelligent tester (CAMRY_ACV40 RM000000XFF00YX.html).
After selecting "check mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (CAMRY_ACV40 RM000000XFF00YX.html).

1.CHECK FRONT PASSENGER AIRBAG ASSEMBLY (FRONT PASSENGER SIDE SQUIB 2ND STEP)

Turn the ignition switch to the LOCK position.

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

Disconnect the connectors from the front passenger airbag assembly.

Connect the white wire side of SST (resistance 2.1 Ω) to connector E (black connector).
CAUTION:
Never connect the tester to the front passenger airbag assembly (front passenger side squib 2nd step) for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
1. Do not forcibly insert the SST into the terminals of the connector when connecting.
2. Insert straight the SST into the terminals of the connector.

SST: 09843-18061

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

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

Clear the DTCs stored in the memory (CAMRY_ACV40 RM000000XFE059X.html).

Turn the ignition switch to the LOCK position.

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

Check the DTCs (CAMRY_ACV40 RM000000XFE059X.html).
OK:
DTC B1815, B1816, B1817, B1818, or 54 is not output.
HINT:
Codes other than DTC B1815, B1816, B1817, B1818, and 54 may be output at this time, but they are not related to this check.

REPLACE FRONT PASSENGER AIRBAG ASSEMBLY (CAMRY_ACV40 RM000000UXA034X.html)

NG

2.CHECK CONNECTOR

Turn the ignition switch to the LOCK position.

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

Disconnect the SST from connector E.

Check that the instrument panel wire assembly connectors (on the front passenger airbag assembly side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not damaged or deformed.

REPAIR OR REPLACE INSTRUMENT PANEL WIRE ASSEMBLY

OK

3.CHECK FRONT PASSENGER SIDE SQUIB 2ND STEP CIRCUIT

Disconnect the connectors from the center airbag sensor assembly.

Check for a short to B+ in the circuit.
1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
2. Turn the ignition switch to the ON position.
3. Measure the voltage according to the value(s) in the table below.
  Standard voltage:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - Body ground
  Ignition switch ON
  Below 1 V
  c1-2 (P2-) - Body ground
  Ignition switch ON
  Below 1 V

Check for an open in the circuit.
1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - c1-2 (P2-)
  Always
  Below 1 Ω

Check for a short to ground in the circuit.
1. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - Body ground
  Always
  1 MΩ or higher
  c1-2 (P2-) - Body ground
  Always
  1 MΩ or higher

Check for a short in the circuit.
1. Release the activation prevention mechanism built into connector B (CAMRY_ACV40 RM000000XFD050X.html).
2. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - c1-2 (P2-)
  Always
  1 MΩ or higher

Go to step 5

OK

4.CHECK CENTER AIRBAG SENSOR ASSEMBLY

Connect the connectors to the front passenger airbag assembly and the center airbag sensor assembly.

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

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

Clear the DTCs stored in the memory (CAMRY_ACV40 RM000000XFE059X.html).

Turn the ignition switch to the LOCK position.

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

Check the DTCs (CAMRY_ACV40 RM000000XFE059X.html).
OK:
DTC B1815, B1816, B1817, B1818, or 54 is not output.
HINT:
Codes other than DTC B1815, B1816, B1817, B1818, and 54 may be output at this time, but they are not related to this check.

REPLACE CENTER AIRBAG SENSOR ASSEMBLY (CAMRY_ACV40 RM000000UWV031X.html)

USE SIMULATION METHOD TO CHECK (CAMRY_ACV40 RM000000XFD050X.html)

5.CHECK INSTRUMENT PANEL WIRE

Check for a short to B+ in the circuit.
1. Restore the released activation prevention mechanism of connector B to the original condition.
2. Disconnect the instrument panel wire connector from the instrument panel wire assembly.
3. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
4. Turn the ignition switch to the ON position.
5. Measure the voltage according to the value(s) in the table below.
  Standard voltage:
  Tester connection
  Condition
  Specified condition
  Ec1-3 (P2+) - Body ground
  Ignition switch ON
  Below 1 V
  Ec1-4 (P2-) - Body ground
  Ignition switch ON
  Below 1 V

Check for an open in the circuit.
1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  Ec1-3 (P2+) - Ec1-4 (P2-)
  Always
  Below 1 Ω

Check for a short to ground in the circuit.
1. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  Ec1-3 (P2+) - Body ground
  Always
  1 MΩ or higher
  Ec1-4 (P2-) - Body ground
  Always
  1 MΩ or higher

Check for a short in the circuit.
1. Release the activation prevention mechanism built into connector B (CAMRY_ACV40 RM000000XFD050X.html).
2. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  Ec1-3 (P2+) - Ec1-4 (P2-)
  Always
  1 MΩ or higher

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

OK

6.CHECK INSTRUMENT PANEL WIRE ASSEMBLY

Check for a short to B+ in the circuit.
1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
2. Turn the ignition switch to the ON position.
3. Measure the voltage according to the value(s) in the table below.
  Standard voltage:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - Body ground
  Ignition switch ON
  Below 1 V
  c1-2 (P2-) - Body ground
  Ignition switch ON
  Below 1 V

Check for an open in the circuit.
1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - c1-2 (P2-)
  Always
  Below 1 Ω

Check for a short to ground in the circuit.
1. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - Body ground
  Always
  1 MΩ or higher
  c1-2 (P2-) - Body ground
  Always
  1 MΩ or higher

Check for a short in the circuit.
1. Release the activation prevention mechanism built into connector D (CAMRY_ACV40 RM000000XFD050X.html).
2. Measure the resistance according to the value(s) in the table below.
  Standard resistance:
  Tester Connection
  Condition
  Specified Condition
  c1-1 (P2+) - c1-2 (P2-)
  Always
  1 MΩ or higher

REPAIR OR REPLACE INSTRUMENT PANEL WIRE ASSEMBLY

USE SIMULATION METHOD TO CHECK (CAMRY_ACV40 RM000000XFD050X.html)

Tester Connection	Condition	Specified Condition
c1-1 (P2+) - Body ground	Ignition switch ON	Below 1 V
c1-2 (P2-) - Body ground	Ignition switch ON	Below 1 V