Mitsubishi Lancer Evolution IX. Manual — part 257
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-287
Step 4. Check the wiring harness between C-03
hazard warning lamp switch connector terminal
No.2 and the body earth.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-06, and repair if necessary.
• Check the earth wires for open circuit.
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 :
Repair the wiring harness.
Step 5. Connector check: C-228 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
AC310446
Connector: C-03
<LHD>
AG
Harness side
AC310454
Connector: C-03
<RHD>
AG
Harness side
AC310452
AE
C-06 (GR)
Connector: C-06 <LHD>
AC310456
Connector: C-06 <RHD>
AB
C-06 (GR)
AC310450
Connector: C-228
AH
Junction block
(rear view)
Harness side
<LHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
AC310461
Harness side
Junction block (rear view)
Connector: C-228
AG
<RHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-288
Step 6. Check the wiring harness between C-228
ETACS-ECU connector terminal No.55 and C-03
hazard warning lamp switch connector terminal
No.1.
• Check the input line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Repair the wiring harness.
Step 7. Pulse check
Check the input signal from the hazard warning lamp
switch.
OK: The M.U.T.-II/III sounds or the voltmeter
needle fluctuates.
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.
AC310446
Connector: C-03
<LHD>
AG
Harness side
AC310454
Connector: C-03
<RHD>
AG
Harness side
AC310450
Connector: C-228
AH
Junction block
(rear view)
Harness side
<LHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
AC310461
Harness side
Junction block (rear view)
Connector: C-228
AG
<RHD>
51
52
53
54
55
56
57
58
59
58 5756 55 54 53 52 51 60
74 7372
71 70 69
System switch
Check condition
Hazard warning lamp
switch
When the hazard
warning lamp switch is
turned from off to on
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-289
INSPECTION PROCEDURE L-11: All the door switch signals are not received. <LH drive vehicles>
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signals from all the door switches are used to
operate the functions below. If the signal(s) are
abnormal, these functions will not work normally.
• Keyless entry system
• Room lamps
POSSIBLE CAUSES
• Malfunction of the door switches
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
ETACS-ECU
DOOR
SWITCH
(FRONT: RH)
DOOR
SWITCH
(REAR: RH)
DOOR
SWITCH
(REAR: LH)
DOOR
SWITCH
(FRONT: LH)
J/B SIDE
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
All Door Switches Input Circuit <LHD>
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-290
DIAGNOSIS PROCEDURE
Step 1. SWS monitor data list.
<Selected item> ETACS ECU
• Driver's door is open
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to Inspection Procedure L-3 "The door
switch (front: LH) signal is not received <LH
drive vehicles>
Step 2. Connector check: D-18 <front: LH>, D-01
<front: RH>, D-08 <rear: RH> or D-11 <rear: LH>
door switch connectors, and C-226 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
Step 3. Check the installation condition.
Check that the door switch is installed on the body
correctly.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Correct the installation condition.
Step 4. Check the door switch.
Refer to GROUP 42
− Door
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Replace the door switch.
Item No.
Item name
Normal condition
Item 32
DR DOOR SW
ON
AC310450
Connector: C-226
AB
Junction block side
Junction block (rear view)
<LHD>
AC310463
<LHD>
AC
Harness side
Harness side
D-01
D-08
D-01
Connectors: D-01, D-08
D-08
AC310465
Harness side
D-11
D-11
AD
Connectors: D-11, D-18
<LHD>
Harness side
D-18
D-18
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