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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Restraints >> Seat Belts >> Occupant Restraint Controller (Orc) - DTCS B0001-01 To B0052-12 >> DTC Troubleshooting >> B0021-1A-Left Curtain Deployment Squib 1-Circuit Resistance Below Threshold >> Possible Causes

Possible Causes

Possible Causes
LEFT CURTAIN SQUIB 1 LINE 1 CIRCUIT SHORTED TO THE LEFT CURTAIN SQUIB 1 LINE 2 CIRCUIT
LEFT SIDE CURTAIN AIRBAG
OCCUPANT RESTRAINT CONTROLLER (ORC)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .