T–200
ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
End Of Sie
DTC B1871
A6E817401046W08
Diagnostic procedure
DTC B1871 Occupancy sensor system (communication error, sensor internal circuit abnomal)
DETECTION
CONDITION
Warning
• Detection conditions are for understanding DTC outline before performing inspection.
Performing inspection with only detection conditions may cause injury due to operating error
or damage the system. When performing inspection, always follow inspection procedure.
• Malfunction in wiring harness between SAS unit and occupancy sensor
• Malfunction in occupancy sensor circuit
POSSIBLE
CAUSE
• Open or short circuit in wiring harness between METER IG 15 A fuse and occupancy sensor
• Open or short circuit in wiring harness between SAS unit and occupancy sensor
• Open circuit in wiring harness between occupancy sensor and ground
• Occupancy sensor malfunction
• SAS unit malfunction
STEP INSPECTION ACTION
1 • Is vehicle equipped with passenger-side air bag
cut-off function?
Yes Go to next step.
No [Present malfunction diagnosis]
Replace SAS unit.
(See T–124 SAS UNIT REMOVAL/INSTALLATION)
[Past malfunction diagnosis]
Troubleshooting completed.
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