Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 958

INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
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
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.
Code No. Defective parts
14 Analog G-sensor
15 Front impact safing G-sensor
16
17 Side impact safing G-sensor
Capacitor
31
32
45 Non-volatile memory (EE-
PROM)
Driver's side air bag module
51
(squib ignition drive circuit) (squib ignition drive circuit)
52
Front passenger's side air
54
bag module (squib ignition bag module (squib ignition
55
drive circuit)
56 Driver's side pre-tensioner
(squib ignition drive circuit) (squib ignition drive circuit)
57
Front passenger's side pre-
58
tensioner (squib ignition drive tensioner (squib ignition drive
59 circuit)
Side air bag module (L.H.)
73
(squib ignition drive circuit) (squib ignition drive circuit)
74
83 Side air bag module (R.H.)
(squib ignition drive circuit) (squib ignition drive circuit)
84
Replace the SRS-ECU.
Code No.21, 22, 61 or 62 Driver's side air bag module
(squib) system
These diagnosis codes are output if there is abnormal resistance between the input
terminals of the driver's side air bag module (squib).
The trouble causes for each diagnosis code No. are as follows.
SRS – SRS –
Troubleshooting Troubleshooting
Trouble causes
Analog G-sensor is not operating
Analog G-sensor characteristics are abnormal
Analog G-sensor output is abnormal
Short circuit in the safing G-sensor
Open circuit in the safing G-sensor
Safing G sensor is not operating
Safing G sensor characteristics are abnormal
Safing G sensor output is abnormal
Voltage at the capacitor terminal is higher than the specified value
for five seconds or more
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.)
Non-volatile memory (EEPROM) is abnormal
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Short circuit in the squib ignition drive circuit
Open circuit in the squib ignition drive circuit
Probable cause
Malfunction of SRS-ECU
Probable cause
Malfunction of clock spring
Partial disconnection due to incorrect clock spring
neutral position
Malfunction of wiring harnesses or connectors
Malfunction of driver's side air bag module (squib)
Malfunction of SRS-ECU
52B-9