Short in Front Passenger Side - Side Squib Circuit - Airbag System
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1825/56: Short in Front Passenger Side - Side Squib Circuit
DTC B1825/56 - Short in Front Passenger Side - Side Squib Circuit
DTC B1826/56 - Open in Front Passenger Side - Side Squib Circuit
DTC B1827/56 - Short to GND in Front Passenger Side - Side Squib Circuit
DTC B1828/56 - Short to B+ in Front Passenger Side - Side Squib Circuit
DESCRIPTION
The front passenger side - side squib circuit consists of the center airbag sensor assembly and the front seat side airbag assembly RH.
The circuit signals the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the front passenger side - side squib circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
- Perform the simulation method by selecting "check mode" (signal check) with the Techstream Check Mode Procedure.
- 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 Diagnosis System.
PROCEDURE
1. CHECK CONNECTOR (FRONT PASSENGER SIDE - SIDE SQUIB - FLOOR WIRE)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the front seat side airbag assembly RH.
(d) Check the floor wire connector and terminals (on the front seat side airbag assembly RH side) and check that the connector is properly connected to the front seat side airbag assembly RH.
Result:
C -- CONNECT CONNECTOR PROPERLY
B -- REPLACE FLOOR WIRE
A -- Continue to next step.
2. CHECK FRONT SEAT SIDE AIRBAG ASSEMBLY RH (FRONT PASSENGER SIDE - SIDE SQUIB)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the front seat side airbag assembly RH.
(d) Connect the black wire side of SST (resistance 2.1 Ohms) to connector C.
CAUTION: Never connect a tester to the front seat side airbag assembly RH (front passenger side - side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
- Do not forcibly insert the SST into the terminals of the connector when connecting.
- Insert the SST straight into the terminals of the connector.
SST: 09843-18061
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Clear the DTCs stored in the memory DTC Check / Clear.
(h) Turn the ignition switch off.
(i) Turn the ignition switch to ON, and wait for at least 60 seconds.
(j) Check the DTCs DTC Check / Clear.
OK:
DTC B1825/56, B1826/56, B1827/56 and B1828/56 are not output.
HINT: DTCs other than DTC B1825/56, B1826/56, B1827/56 and B1828/56 may be output at this time, but they are not related to this check.
NG -- CHECK CONNECTOR (FLOOR WIRE - CENTER AIRBAG SENSOR ASSEMBLY)
OK -- REPLACE FRONT SEAT ASSEMBLY RH
3. CHECK CONNECTOR (FLOOR WIRE - CENTER AIRBAG SENSOR ASSEMBLY)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the SST from connector C.
(d) Check the floor wire connector and terminals (on the center airbag sensor assembly side) and check the connector properly connected to the center airbag sensor assembly.
Result:
C -- CONNECT CONNECTOR PROPERLY
B -- REPLACE FLOOR WIRE
A -- Continue to next step.
4. CHECK FLOOR WIRE (FRONT PASSENGER SIDE - SIDE SQUIB CIRCUIT)
(a) Disconnect the connectors from the center airbag sensor assembly.
(b) Check for 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 ON.
(3) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(c) Check for open in the circuit.
(1) Turn the ignition switch off.
(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:
(d) Check for short to ground in the circuit.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(e) Check for short in the circuit.
(1) Release the activation prevention mechanism built into connector B Diagnosis System.
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(3) Restore the released activation mechanism of connector B to the original condition.
NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.
5. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Connect the connectors to the front seat side airbag assembly RH and the center airbag sensor assembly.
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in the memory DTC Check / Clear.
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Check the DTCs DTC Check / Clear.
OK:
DTC B1825/56, B1826/56, B1827/56 and B1828/56 are not output.
HINT: DTCs other than DTC B1825/56, B1826/56, B1827/56 and B1828/56 may be output at this time, but they are not related to this check.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK