Code No.B1504: Right rear curtain air bag module (squib) activating circuit short-circuited <Vehicles with rear curtain air bag>
Code No.B1505: Right rear curtain air bag module (squib) activating circuit open-circuited <Vehicles with rear curtain air bag>
Code No.B1514: Left rear curtain air bag module (squib) activating circuit short-circuited <Vehicles with rear curtain air bag>
Code No.B1515: Left rear curtain air bag module (squib) activating circuit open-circuited <Vehicles with rear curtain air bag>
Code No.B1547: Passenger’s air bag cut off activating circuit <Vehicles for RUSSIA>

caution

If diagnosis codes is set in the SRS-ECU, always diagnose the CAN main bus line.

These diagnosis codes are set when a fault is detected in the SRS-ECU. The most likely causes for this code to be set are shown in the table below:

Malfunction of the SRS-ECU

Code No.	Part/Circuit integral to SRS-ECU	Trouble causes
B1504	Rear curtain air bag module (RH) (squib ignition drive circuit)	Short circuit in the squib ignition drive circuit
B1505		Open circuit in the squib ignition drive circuit
B1514	Rear curtain air bag module (LH) (squib ignition drive circuit)	Short circuit in the squib ignition drive circuit
B1515		Open circuit in the squib ignition drive circuit
B1547	Passenger’s air bag cut off activating circuit (squib ignition drive circuit)	Cut OFF (squib ignition drive circuit)

DIAGNOSIS PROCEDURE

Replace the SRS-ECU.