SRS –
Troubleshooting
52B-13
Code No.44 SRS warning lamp drive circuit system
Probable cause
This diagnosis code is output when a short occurs in the lamp drive circuit or a
malfunction of the output transistor inside the SRS-ECU is detected while the SRS-ECU
is monitoring the SRS warning lamp drive circuit.
D
Malfunction of wiring harnesses or connectors
D
Malfunction of SRS-ECU
Check the SRS warning lamp drive circuit system.
(Refer to P.52B-12)
OK
Replace the SRS-ECU.
Code No.45 SRS-ECU non-volatile memory (EEPROM)
and A/D converter system
Probable cause
This diagnosis code is output if there is a malfunction in the SRS-ECU non-volatile
memory (EEPROM) and A/D converter.
D
Malfunction of SRS-ECU
Code No.
Trouble symptom
45
Non-volatile memory
(EEPROM)
D
Non-volatile memory (EEPROM) is abnormal.
Replace the SRS-ECU.
Code No.51 or 52 Driver’s side air bag module (squib
ignition drive circuit) system
Probable cause
This diagnosis code is output if a short (No.51) or an open circuit (No.52) is detected
in the circuit for the driver’s seat.
D
Malfunction of SRS-ECU
Code No.
Trouble symptom
51
Driver’s side air bag module
(squib ignition drive circuit)
D
Short circuit in the squib ignition drive circuit
52
(squib ignition drive circuit)
D
Open circuit in the squib ignition drive circuit
Replace the SRS-ECU.
Code No.54 or 55 Front passenger’s side air bag module
(squib ignition drive circuit) system
Probable cause
This diagnosis code is output if a short (No.54) or an open circuit (No.55) is detected
in the circuit for the passenger’s seat.
D
Malfunction of SRS-ECU
Code No.
Trouble symptom
54
Front passenger’s side air
bag module (squib ignition
D
Short circuit in the squib ignition drive circuit
55
bag module (squib ignition
drive circuit)
D
Open circuit in the squib ignition drive circuit
Replace the SRS-ECU.