Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 558

Dummy resistor
(MB991865)
resistance (3Ω)
Instrumental panel
wiring harness
<Check the circuit between the SRS-ECU and the front
passenger's seat belt pre-tensioner>
Measure at the SRS-ECU connector C-41.
D Disconnect the SRS-ECU connector C-41.
D Disconnect the front passenger's seat belt pre-tensioner
connector D-28 and D-26
*1 *2
Caution
Disconnect the connector and short-circuit the squib
circuit before releasing the short bar of the SRS-ECU
connector in the following operation.
D Cable bands between terminals 27, 28 and the short bar
(width:3 mm, thickness:0.5 mm) between terminals 11 and
12 and the short bar, and release the short bar.
(See Figure A.)
Caution
As the short bar may not be releasable if inserted
insufficiently, insert more than 4 mm.
D Measure at the harness side
D Continuity check between terminals 27 and 28
Caution
Do not directly insert a probe or other devices at the
front of the connector to avoid a possible decrease in
the contact pressure.
OK: No continuity
Connector C-41
Replace the SRS-ECU.
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
SRS -
Resistor harness
(MB991866)
Front passenger's seat belt
pre-tensioner connector
YES
.
OK
Troubleshooting
<Check the front passenger's seat belt pre-tensioner (squib)>
MUT-II self-diag code
D Connect the dummy harness (MB991865) to the resistor harness
(MB991866).
D Disconnect the front passenger's seat belt pre-tensioner connector
2
D-28* and D-26* and insert the resistor harness (MB991866) behind
1
the harness side connector.
Caution
Do not directly insert a probe or other devices at the front of the
connector to avoid a possible decrease in the contact pressure.
D Connect the negative (- ) terminal of the battery
D Check the diagnosis code again after erasing the memory.
Is code No.28 output?
Replace the front passenger's seat belt pre-tensioner.
NG
Check connector: D-28*
OK
Check the trouble
symptoms.
NG
Check the harness between the front passenger's seat belt
pre-tensioner and the SRS-ECU, and repair if necessary.
Figure A
Front view of SRS-ECU
connector C-41
(harness side)
A
A
52B-27
NO
1 *2 1 *2
, D-26 , C-133* , C-112
NG
Correct
Terminal
Cable
band and etc.
Section
A - A
Short bar
4 mm or more
, C-41