B1822

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1820/55: Short in Side Squib RH Circuit

DTC B1820/55 - Short in Side Squib RH Circuit

DTC B1821/55 - Open in Side Squib RH Circuit

DTC B1822/55 - Short to GND in Side Squib RH Circuit

DTC B1823/55 - Short to B+ in Side Squib RH Circuit

DESCRIPTION

The side squib RH circuit consists of the center airbag sensor and the front seat side airbag RH.
This circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the side squib RH circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: To perform the simulation method, enter the "check mode (signal check) with the Techstream Check Mode Procedure, and then wiggle each connector of the airbag system or drive the vehicle on various type of road. Diagnosis System

PROCEDURE

1. CHECK FRONT SEAT SIDE AIRBAG RH (SIDE SQUIB RH)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connector from the front seat side airbag RH.
(d) Connect the red wire side of SST (resistance: 2.1 Ohms) to connector C.
CAUTION: Never connect the tester to the front seat side airbag RH (side squib RH) for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
- Do not forcibly insert SST into the terminals of the connector when connecting SST.
- Insert SST straight into the terminals of the connector.

SST: 09843-18061
(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Turn the engine switch on (IG), and wait for at least 60 seconds.
(g) Clear the DTCs. DTC Check / Clear
(h) Turn the engine switch off.
(i) Turn the engine switch on (IG), and wait for at least 60 seconds.
(j) Check for DTCs. DTC Check / Clear
OK:
DTC B1820, B1821, B1822 or B1823 is not output.
HINT: Codes other than DTC B1820, B1821, B1822 and B1823 may be output at this time, but they are not related to this check.

NG -- CHECK NO. 2 FLOOR WIRE (SIDE SQUIB RH CIRCUIT)
OK -- REPLACE FRONT SEAT ASSEMBLY RH
2. CHECK NO. 2 FLOOR WIRE (SIDE SQUIB RH CIRCUIT)





(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect SST from connector C.
(d) Disconnect the connectors from the center airbag sensor.
(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





(g) Turn the engine switch off.
(h) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(i) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(j) Release the activation prevention mechanism built into connector B. Diagnosis System
(k) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.
3. CHECK CENTER AIRBAG SENSOR





(a) Connect the connectors to the front seat side airbag RH and the center airbag sensor.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the engine switch on (IG), and wait for at least 60 seconds.
(d) Clear the DTCs. DTC Check / Clear
(e) Turn the engine switch off.
(f) Turn the engine switch on (IG), and wait for at least 60 seconds.
(g) Check for DTCs. DTC Check / Clear
OK:
DTC B1820, B1821, B1822 or B1823 is not output.
HINT: Codes other than DTC B1820, B1821, B1822 and B1823 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