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(9) Turn the ignition switch to ON and wait for at least 30 seconds.
(10) Check the vehicle again with the HiScan(Pro).
Does the above DTC(s) go off?
►
Problem is intermittent or was repaired and SRSCM memory was not cleared.
►
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 > B1477
DTC Description
The CAB squib circuit consists of the SRSCM and CAB. It causes the SRS to deploy when the SRS deployment
conditions are satisfied. The above DTC is recorded when the CAB resistance too high or low is detected in the CAB
squib circuit.
DTC Detecting Condition
DTC
Condition
Probable cause
B1473
B1474
B1477
B1478
• Too high or low resistance between CAB high(+) and CAB low ()
• Curtain Airbag (CAB) Malfunction
• SRSCM Malfunction
• Open or short circuit on
wiring harness
• Curtain Airbag (CAB)
squib
• SRSCM
Specification
CAB resistance : 1.5 ≤ R ≤ 5.7 Ω
Schematic Diagram