Test L: LFC 33/DTC B1933 - Air Bag Passenger Circuit Open

PINPOINT TEST L: LFC 33/DTC B1933 - AIR BAG PASSENGER CIRCUIT OPEN

L1-L2:

L2-L4:

L5-L6:

Normal Operation
The restraints control module (RCM) monitors the passenger air bag ignitor by measuring the resistance between pins 6 and 7. If the RCM detects an open or high resistance between these pins, it will store a diagnostic trouble code (DTC) B1933 in memory and flash a lamp fault code (LFC) 33 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger air bag high resistance can be caused by:
- wiring, terminal or connectors.
- a faulted passenger air bag module.
- a faulted RCM.