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B1836








AIRBAG SYSTEM: B1835/58: Short in Front Passenger Side Curtain Shield Squib Circuit

DTC B1835/58 - Short in Front Passenger Side Curtain Shield Squib Circuit

DTC B1836/58 - Open in Front Passenger Side Curtain Shield Squib Circuit

DTC B1837/58 - Short to GND in Front Passenger Side Curtain Shield Squib Circuit

DTC B1838/58 - Short to B+ in Front Passenger Side Curtain Shield Squib Circuit

DESCRIPTION

The front passenger side curtain shield squib RH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly RH.
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 curtain squib circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

HINT:
- Perform the simulation method by selecting the "check mode" (signal check) with Techstream (Check Mode Procedure).
- After selecting the "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 (Check Mode Procedure).

PROCEDURE

1. CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH (FRONT PASSENGER SIDE CURTAIN SHIELD SQUIB)





(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connector from the curtain shield airbag assembly RH.
(d) Connect SST (resistance 2.1 Ohms) to connector C.

CAUTION: Never connect a tester to the curtain shield airbag assembly RH (Front passenger side curtain shield squib) 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.
- Insert straight SST 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 the ON position, and wait for at least 60 seconds.
(g) Clear the DTCs stored in memory (DTC Check / Clear).
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(j) Check the DTCs (DTC Check / Clear).
OK:
DTC B1835, B1836, B1837, B1838 or 58 is not output.

HINT: Codes other than DTC B1835, B1836, B1837, B1838 and 58 may be output at this time, but they are not related to this check.

OK -- REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH
NG -- Continue to next step.
2. CHECK CONNECTOR
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect SST from connector "C".
(d) Check that the floor wire No. 2 connectors (on the curtain shield airbag assembly RH side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deformed or damaged.
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
3. CHECK FLOOR WIRE NO. 2 (FRONT PASSENGER SIDE CURTAIN SHIELD SQUIB CIRCUIT)





(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the SST from connector C.
(d) Disconnect the connectors form the center airbag sensor assembly.
(e) Check the 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:





(f) Check the 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:





(g) Check the short to ground in the circuit.
(1) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(h) Check the 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:





NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
4. CHECK CENTER AIRBAG SENSOR ASSEMBLY





(a) Connect the connectors to the center airbag sensor assembly and the curtain shield airbag assembly RH.
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(d) Clear the DTCs stored in memory (DTC Check / Clear).
(e) Turn the ignition switch to the LOCK position.
(f) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(g) Check the DTCs (DTC Check / Clear).
OK:
DTC B1835, B1836, B1837, B1838 or 58 is not output.

HINT: Codes other than DTC B1835, B1836, B1837, B1838 and 58 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
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