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
Locking the front doors from the outside without a key
Move the inside lock button to the lock position.
Close the door.
Vehicles without a smart key system
The doors cannot be locked if either of the front doors is open and the
key is in the engine switch.
Vehicles with a smart key system
The door cannot be locked if the engine switc ...
On-vehicle inspection
1. INSPECT CENTER AIRBAG SENSOR ASSEMBLY
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnosis system check.
2. INSPECT CENTER AIRBAG SENSOR ASSEMBLY
(VEHICLE INVOLVED IN COLLISION AND AIRBAG
HAS NOT DEPLOYED)
Perform a diagnosis system check.
3. INSPECT CENTER AIRBAG ...
How to proceed with
troubleshooting
HINT:
Troubleshoot in accordance with the procedures on the
following pages
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX
COMMUNICATION SYSTEM (BEAN)
Use the intelligent tester to check for normal ...