Mitsubishi Lancer Evolution IX. Manual — part 206
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SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-83
INSPECTION PROCEDURE C-5: The impact detection door unlock function does not function.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the impact detection door unlock function does not
work normally, the input signal circuit from the impact
detection sensor, the SRS-ECU or the ETACS-ECU
may be defective.
POSSIBLE CAUSES
• Malfunction of the SRS-ECU
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. M.U.T.-II/III other system diagnosis code.
Check that the SRS-ECU sets a diagnosis code.
Q: Is the diagnosis code set?
YES :
Refer to GROUP 52B
− Troubleshooting
.
NO :
Go to Step 2.
Step 2. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.
• Ignition switch: OFF
ECUS TO BE CHECKED
• ETACS ECU
OK: "OK" is displayed on the "ETACS ECU"
menu.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Wire colour code
B : Black LG : Light green
G : Green L : Blue
W : White Y : Yellow
SB : Sky blue BR : Brown
O : Orange GR : Gray
R : Red P : Pink V : Violet
SRS-ECU
ETACS-ECU
CRASH DETECTION
DOOR UNLOCK
SIGNAL PROCESS CIRCUIT
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SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-84
Step 3. Connector check: C-12 SRS-ECU
connector and C-227 ETACS-ECU connector
Q: Are the check results normal?
YES :
Go to Step 4.
NO :
Repair the defective connector.
Step 4. Check the wiring harness between C-227
ETACS-ECU connector terminal No.29 and C-12
SRS-ECU connector terminal No.14.
• Check the communication lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Repair the wiring harness.
AC310446
Connector: C-12 <LHD>
AZ
Harness side
C-12 (Y)
AC310454
Connector: C-12 <RHD>
BE
Harness side
C-12 (Y)
AC310450
Connector: C-227 <LHD>
AI
Junction block side (rear view)
Harness side
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
AC310461
Harness side
Junction block (rear view)
Connector: C-227
AF
<RHD>
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
AC310446
Connector: C-12 <LHD>
AZ
Harness side
C-12 (Y)
AC310454
Connector: C-12 <RHD>
BE
Harness side
C-12 (Y)
AC310450
Connector: C-227 <LHD>
AI
Junction block side (rear view)
Harness side
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
AC310461
Harness side
Junction block (rear view)
Connector: C-227
AF
<RHD>
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-85
Step 5. Retest the system.
Replace the SRS-ECU, and check that the impact
detection door unlock function works normally.
(1) Replace the SRS-ECU.
(2) Check that the impact detection door unlock
function works normally.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Replace the ETACS-ECU.
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SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-86
POWER WINDOW
INSPECTION PROCEDURE D-1: Power windows do not work at all.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
POWER WINDOW
RELAY
ETACS-ECU
FRONT
POWER
WINDOW
SUB
SWITCH
(RH)
REAR
POWER
WINDOW
SUB
SWITCH
(LH)
REAR
POWER
WINDOW
SUB
SWITCH
(RH)
Wire colour code
B : Black
LG : Light green
G : Green
L: Blue
W : White
Y: Yellow
SB : Sky blue
BR : Brown
O : Orange
GR : Gray
R : Red
P : Pink
V : Violet
J/B SIDE
CPU
Power Window Relay Circuit <LHD>
FUSIBLE
LINK
5
POWER WINDOW
MAIN SWITCH
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