Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 963

52B-14
Code No.43 SRS warning lamp drive circuit system
(Lamp does not switch off.)
This diagnosis code is output when a short to earth occurs in the harness between
the lamp and the SRS-ECU while SRS-ECU is monitoring the SRS warning lamp
and the lamp is ON.
SRS warning lamp inspection
Connect the battery (–) terminal.
Ignition switch: ON
Does lamp switch off when SRS-ECU connector D-25 is
disconnected?
Replace the SRS-ECU.
Code No.44 SRS warning lamp drive circuit system
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.
However, if the vehicle condition returns to normal, diagnosis code No.44 will be
automatically erased, and the SRS warning lamp will switch off.
Check the SRS warning lamp drive circuit system.
(Refer to P.52B-12)
Code No.71, 72, 75 or 76 Side air bag module (L.H.) (squib)
system
These diagnosis codes are output if the resistance value between the side air bag
module (L.H.) (squib) input terminals of the SRS-ECU is abnormal. The problems
which cause these codes to be output are as follows.
Code No.
71
72
75
76
SRS –
YES
Trouble causes
Short in side air bag module (L.H.) (squib) or harness short
Open circuit in side air bag module (L.H.) (squib) or open harness
Malfunction of connector contact
Short in side air bag module (L.H.) (squib) harness leading to the power supply
Short in side air bag module (L.H.) (squib) harness leading to the earth
Troubleshooting
Probable cause
Malfunction of wiring harnesses or connectors
Malfunction of SRS-ECU
Malfunction of combination meter
NO
Check the following connectors: D-25, B-01
OK
Check trouble symptoms.
NG
Check the harness wire between the SRS–ECU and combination
meter
.
Probable cause
Malfunction of wiring harnesses or connectors
Malfunction of SRS-ECU
OK
Replace the SRS-ECU.
Probable cause
Malfunction of wiring harnesses or connectors
Malfunction of side air bag module (L.H.) (squib)
Malfunction of SRS-ECU
NG
Repair
NG
Repair