SRS ± Troubleshooting
52B-11
Code No.14, 15, 16, 17, 31, 32, 45, 51, 52, 54, 55, 56, 57, 58,
59, 73, 74, 83, 84 System inside SRS-ECU
Probable cause
These diagnostic trouble codes are output when a fault is detected in the SRS-ECU.
The defective parts and trouble causes for each diagnosis code No. are as follows.
D Malfunction of SRS-ECU
Code No. Defective parts Trouble causes
14 Analog G-sensor D Analog G-sensor is not operating
D Analog G-sensor characteristics are abnormal
D Analog G-sensor output is abnormal
15
Front impact safing G-sensor
D Short circuit in the safing G-sensor
16 D Open circuit in the safing G-sensor
17 Side impact safing G-sensor D Safing G sensor is not operating
D Safing G sensor characteristics are abnormal
D Safing G sensor output is abnormal
31
Capacitor
D Voltage at the capacitor terminal is higher than the specified value
for five seconds or more
32 D Voltage at the capacitor terminal is lower than the specified value
for five seconds or more (this is not detected if diagnosis code
No.41 or 42 indicating battery voltage drop has been output.)
45 Non-volatile memory (EE-
PROM)
D Non-volatile memory (EEPROM) is abnormal
51
Driver's side air bag module
(squib ignition drive circuit)
D Short circuit in the squib ignition drive circuit
52
squ
gn
on
r
ve c
rcu
D Open circuit in the squib ignition drive circuit
54
Front passenger's side air
bag module (squib ignition
D Short circuit in the squib ignition drive circuit
55
ag mo
u
e
squ
gn
on
drive circuit)
D Open circuit in the squib ignition drive circuit
56
Driver's side pre-tensioner
(squib ignition drive circuit)
D Short circuit in the squib ignition drive circuit
57
squ
gn
on
r
ve c
rcu
D Open circuit in the squib ignition drive circuit
58
Front passenger's side pre-
tensioner (squib ignition drive
D Short circuit in the squib ignition drive circuit
59
ens
oner
squ
gn
on
r
ve
circuit)
D Open circuit in the squib ignition drive circuit
73
Side air bag module (R.H.)
(squib ignition drive circuit)
D Short circuit in the squib ignition drive circuit
74
squ
gn
on
r
ve c
rcu
D Open circuit in the squib ignition drive circuit
83
Side air bag module (R.H.)
(squib ignition drive circuit)
D Short circuit in the squib ignition drive circuit
84
squ
gn
on
r
ve c
rcu
D Open circuit in the squib ignition drive circuit
Replace the SRS-ECU.