Test S
PINPOINT TEST S: DTC B2436 - PASSENGER SAFETY BELT BUCKLE SWITCH CIRCUIT OPENLamp Fault Codes (LFCs)
The lamp fault code (LFC) indicates the specific fault associated with diagnostic trouble code (DTC) B2436.
Test S1:
Test S2:
Test S2-S4:
Test S5:
Test S6:
Test S7:
Normal Operation
As part of the SRS, the safety belt buckles are equipped with Hall-effect switches. The safety belt switches indicate to the RCM whether the safety belts are connected (switch closed) or disconnected (switch open).
The restraints control module (RCM) checks the passenger safety belt buckle switch circuits for faults. If the RCM detects an open fault, it will store diagnostic trouble code (DTC) B2436 in memory and flash lamp fault code (LFC) 5-2 on the air bag indicator.
Possible Causes
A passenger safety belt buckle switch open circuit fault can be caused by:
- wiring, terminals, or connectors.
- a faulted passenger safety belt buckle switch.
- a faulted RCM.