
SRS –
Troubleshooting
52B-6
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
DIAGNOSIS CODES CHECK
Connect the MUT-
II
to the diagnosis connector (16-pin) under the instrument under cover, then check
diagnosis codes.
(Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
Connect the MUT-
II
to the diagnosis connector and erase the diagnosis code.
Caution
Turn off the ignition switch before connecting or disconnecting the MUT-
II
.
INSPECTION CHART FOR DIAGNOSIS CODES
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No.
Diagnosis item
Reference page
14
Analog G-sensor system in the SRS-ECU
52B-7
15,16
Safing G-sensor system in the SRS-ECU
52B-7
21, 22, 61, 62
Driver’s side air bag module (squib) system
52B-8
24, 25, 64, 65
Front passenger’s side air bag module (squib) system
52B-9
31, 32
SRS-ECU capacitor system
52B-9
34*
Connector lock system
52B-10
35
SRS-ECU (deployed air bag) system
52B-10
41*
IG
1
(A) power circuit system
52B-10
42*
IG
1
(B) power circuit system
52B-11
43
SRS warning lamp drive circuit
system
Lamp does not illuminate.*
52B-12
system
Lamp does not switch off.
52B-12
44
SRS warning lamp drive circuit system
52B-13
45
SRS-ECU non-volatile memory (EEPROM) and A/D converter system
52B-13
51, 52
Driver’s side air bag module (squib ignition drive circuit) system
52B-13
54, 55
Front passenger’s side air bag module (squib ignition drive circuit) system
52B-13
NOTE
(1) *: If the vehicle condition returns to normal, the diagnosis code will be automatically erased, and the SRS warning
lamp will return to normal.
(2) If the vehicle has a discharged battery it will store the fault codes 41 or 42. When these diagnosis codes are
displayed, check the battery.