Short in Front Passenger Side Curtain Shield Squib Circuit - Airbag System

SUPPLEMENTAL RESTRAINT SYSTEM: 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 circuit consists of the center airbag sensor and the curtain shield airbag 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 shield squib circuit.






WIRING DIAGRAM





INSPECTION PROCEDURE
HINT:
- Perform the simulation method by selecting the "CHECK MODE" (signal check) with the 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 various types of roads Check Mode Procedure.

PROCEDURE

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




(a) Turn the power switch OFF.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connectors from the curtain shield airbag RH.
(d) Connect SST (resistance 2.1 Ohms) to connector C.
CAUTION: Never connect SST to the curtain shield airbag 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 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 power switch ON (IG), and wait for at least 60 seconds.
(g) Clear the DTCs DTC Check / Clear.
(h) Turn the power switch OFF.
(i) Turn the power switch ON (IG), 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: DTCs other than DTC B1835, B1836, B1837, B1838 or 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 power switch OFF.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the SST from connector C.
(d) Check that the floor wire No. 2 connector (on the curtain shield airbag RH side) are not damaged.
OK:
Lock button is not disengaged, and claw of 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) Disconnect the connectors from the center airbag sensor.
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the power switch ON (IG).
(d) Measure the voltage of the wire harness side connector.
Standard voltage:





(e) Turn the power switch OFF.
(f) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(g) Measure the resistance of the wire harness side connector.
Standard resistance:





(h) Release the activation prevention mechanism built into connector B Diagnosis System.
(i) Measure the resistance of the wire harness side connector.
Standard resistance:






NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY