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(10) Check the vehicle again with the HiScan(Pro).
Does the above DTC(s) go off?
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Problem is intermittent or was repaired and SRSCM memory was not cleared.
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Replace the SRSCM with a new one, and then check the vehicle again. At this time, if the vehicle normally
operates with a new SRSCM, the fault may be the SRSCM(Replace SRSCM).
Restraint > Troubleshooting > B1489
DTC Description
The passenger occupant classification system consists of the SRSCM and the OC module. The above DTC is recorded
when a defect or communication error of the OC module is detected in the OC module circuit.
DTC Detecting Condition
DTC
Condition
Probable cause
B1489
B1490
B1493
B1494
• OC module Malfunction
• SRSCM Malfunction
• Wiring Harness
• OC module
• SRSCM
Schematic Diagram
Terminal & Connector Inspection
1. Visually inspect all connectors related to the affected circuit for damage and secure connection.
2. Inspect terminals for damage and corrosion.
Avoid damaging connectors during the inspection process.
3. Are any problems found?
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Go to next step.
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After repairing the trouble part, check whether DTC occurs or not.