DTC B1638/86 Short to B+ in Rear Curtain Shield Squib LH Circuit
DESCRIPTION
The rear curtain shield squib LH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1638/86 is recorded when a short to B+ is detected in the rear curtain shield squib LH circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
1 CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (REAR CURTAIN SHIELD SQUIB LH)
CAUTION: Never connect a tester to the curtain shield airbag assembly LH (Rear curtain shield squib LH) 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 09843-18060
OK: DTC B1638/86 is not output.
HINT: Codes other than DTC B1638/86 may be output at this time, but they are not related to this check.
REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH
2 CHECK FLOOR WIRE (REAR CURTAIN SHIELD SQUIB LH CIRCUIT)
Standard voltage
3 CHECK CENTER AIRBAG SENSOR ASSEMBLY
OK: DTC B1638/86 is not output.
HINT: Codes other than code B1638/86 may be output at this time, but they are not related to this check.
USE SIMULATION METHOD TO CHECK
Rear Airbag Sensor LH Circuit Malfunction
DTC B1155/39 Rear Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The rear airbag sensor LH circuit consists of the center airbag sensor
assembly and rear airbag sensor
LH.
If the center airbag sensor assembly receives signals from the rear airbag
sensor LH, it judges whether or
not the ...
DTC check / clear
1. DTC CHECK/CLEAR (USING INTELLIGENT TESTER:)
DTC check
Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Read the DTCs on the tester screen.
DTC clear
Connect the intelligent tester to the DLC3.
&n ...
On-vehicle inspection
1. INSPECT FRONT PASSENGER AIRBAG ASSEMBLY
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the front passenger airbag assembly installed
on the vehicle, perform a visual check. If there are
any defects as mentioned below, replace the
instrumen ...