Code No.B1404: Driver’s air bag module (squib ignition drive circuit) system detected short circuit
Code No.B1405: Driver’s air bag module (squib ignition drive circuit) system detected open circuit
Code No.B1414: Passenger’s (front) air bag module (squib ignition drive circuit) system detected short circuit
Code No.B1415: Passenger’s (front) air bag module (squib ignition drive circuit) system detected open circuit
Code No.B1466: Analogue G-sensor system in the SRS-ECU
Code No.B1467: Safing G-sensor open circuit
Code No.B1468: Safing G-sensor short circuit
Code No.B1478: SRS-ECU capacitor circuit voltage too high
Code No.B1479: SRS-ECU capacitor circuit voltage too low
Code No.B1496: SRS-ECU non-volatile memory (EEPROM)
Code No.B1497: SRS-ECU application specific integrated circuit (for frontal activation)
Code No.B1498: SRS-ECU ROM or RAM
Code No.B1557: SRS-ECU application specific integrated circuit
Code No.B1607: Seat belt pre-tensioner (driver’s side) (squib ignition drive circuit) system detected short circuit
Code No.B1608: Seat belt pre-tensioner (driver’s side) (squib ignition drive circuit) system detected open circuit
Code No.B1613: Seat belt pre-tensioner (passenger’s side) (squib ignition drive circuit) system detected short circuit
Code No.B1614: Seat belt pre-tensioner (passenger’s side) (squib ignition drive circuit) system detected open circuit


DIAGNOSIS CODE SET CONDITIONS


These diagnosis code 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:
Code No.
 Part/Circuit integral to SRS-ECU
 Trouble causes
B1404
 Driver’s air bag module (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1405
  • Open circuit in the squib ignition drive circuit
B1414
 Passenger’s (front) air bag module (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1415
  • Open circuit in the squib ignition drive circuit
B1466
 Analogue G-sensor
  • When the analogue G-sensor is not operating
  • When the characteristics of the analogue G-sensor are abnormal
  • When the output from the analogue G-sensor is abnormal
B1467
 Safing G-sensor (front air bag)
  • Open circuit in the safing G-sensor
B1468
  • Short circuit in the safing G-sensor
B1478
 Capacitor
  • Voltage at the capacitor terminal is higher than the specified value for five seconds or more
B1479
  • Voltage at the capacitor terminal is lower than the specified value for five seconds or more (This is not detected if diagnosis code B1476 or B1477 indicating battery positive voltage drop has been set).
B1496
 Non-volatile memory (EEPROM)
  • When the non-volatile memory (EEPROM) are abnormal
B1497
 Application specific integrated circuit (for frontal activation)
  • When the application specific integrated circuit (frontal activation) are abnormal
B1498
 ROM or RAM
  • When the ROM or RAM are abnormal
B1557
 Application specific integrated circuit
  • When the application specific integrated circuit are abnormal
B1607
 Seat belt pre-tensioner (driver’s side) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1608
  • Open circuit in the squib ignition drive circuit
B1613
 Seat belt pre-tensioner (passenger’s side) (squib ignition drive circuit)
  • Short circuit in the squib ignition drive circuit
B1614
  • Open circuit in the squib ignition drive circuit

PROBABLE CAUSE


Malfunction of the SRS-ECU

DIAGNOSIS PROCEDURE
Replace the SRS-ECU (Refer to ).