Mitsubishi Grandis. Manual — part 153
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-74
Step 8. Check the wiring harness between A-15X
front-ECU terminal connector terminal No.31 and
A-25 earth connector terminal No.5.
• 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 9. Connector check: C-221 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Repair the defective connector.
AC311521AC
Connector: A-15X
Relay box side
21
22
23
24
25
26
27
28
29
30
31
AC310403
A-25 (GR)
AE
Connector: A-25 <LHD>
Harness side
AC310398
A-25 (GR)
AE
Connector: A-25 <RHD>
Harness side
AC310626
Connector: C-219
Junction block (Rear view)
<LHD>
AB
Junction block side
AC310620
Connector: C-219
Junction block
(Rear view)
<RHD>
AB
Junction block side
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-75
Step 10. Check the wiring harness between
A-15X front-ECU connector terminal No.22 and
C-221 ETACS-ECU connector terminal No.59.
NOTE:
Prior to the wiring harness inspection, check joint
connector C-01 and intermediate connector C-125,
and repair if necessary.
• Check the communication lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the wiring harness.
AC311521AC
Connector: A-15X
Relay box side
21
22
23
24
25
26
27
28
29
30
31
AC310626
Connector: C-221
Junction block (Rear view)
<LHD>
AC
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Harness side
C-221(GR)
AC310620
Connector: C-221
Junction block
(Rear view)
<RHD>
AC
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Harness side
C-221(GR)
AC310614
AT
Connectors: C-01, C-125 <LHD>
C-125
C-125
C-01
C-01
AC310631AE
Connector: C-01 <RHD>
AC310613
AD
Connector: C-125 <LHD>
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-76
Step 11. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
front-ECU and the SWS communication lines are
normal.
• Ignition switch: ON
ECUS TO BE CHECKED
• FRONT ECU
OK: "OK" is displayed on the "FRONT ECU"
menu.
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 front-ECU.
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-77
Inspection Procedure A-5: Communication with the power window main switch (power window
module) is not possible.
CAUTION
Whenever the ECU is replaced, ensure that the
power supply circuit, the earthing circuit and the
communication circuit are normal.
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