Mitsubishi Grandis. Manual — part 167
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-130
Step 9. Check the wiring harness from C-221
ETACS-ECU connector terminal No.61 to G-17
tailgate lock actuator connector terminal No.1.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-16 and G-14, and repair if
necessary.
• Check the input and output lines for open circuit.
Q: Is the check result normal?
YES :
Go to Step 10.
NO :
Repair the wiring harness.
Step 10. Retest the system.
Check that the tailgate lock 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.
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)
AC310222
Connector: G-17
Harness side
AD
G-17(B)
AC310615
AE
Connector: C-16 <LHD>
AC310631 AD
Connector: C-16 <RHD>
AC310222
Connector: G-14
AF
2
1
4
3
13
8
11
10
5
7
12
6
14
9
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-131
POWER WINDOWS
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 Circuit
FUSIBLE
LINK
5
POWER WINDOW
RELAY
ETACS-ECU
POWER WINDOW
MAIN SWITCH
POWER
WINDOW
SUB
SWITCH
(FRONT: RH)
POWER
WINDOW
SUB
SWITCH
(REAR: LH)
POWER
WINDOW
SUB
SWITCH
(REAR: RH)
CPU
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
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-132
COMMENTS ON TROUBLE SYMPTOM
If the power windows do not work at all, the power
window relay, the power window main switch or the
ETACS-ECU may be defective.
POSSIBLE CAUSES
• Malfunction of the power window relay
• Malfunction of the power window main switch
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
ETACS-ECU and the power window main switch
(power window module) and the SWS
communication lines are normal.
• Turn the ignition switch to the ON position.
ECUS TO BE CHECKED
• ETACS ECU
• P/W MODULE
OK: "OK" are displayed for all the items
Q: Are the check result normal?
"OK" are displayed for all the items :
Go to Step 2.
"NG" is displayed on the "ETACS ECU" menu. :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
"NG" is displayed on the "P/W MODULE" menu. :
Refer to Inspection Procedure A-5
"Communication with the power window
main switch (power window module) is not
possible
Step 2. Function diagnosis by using the SWS
monitor
Check the SWS communication signal, which are
related to the power windows.
<Selected item> POWER WINDOW
• Turn the ignition switch to the ON position.
• Power window main switch: UP
OK: Normal conditions are displayed for all
the items.
Q: Are the check result normal?
Normal conditions are displayed for all the items :
Go to Step 3.
Normal condition is not displayed for item No.30 :
Refer to inspection procedure Q-2 "The
ignition switch (IG1) signal is not received
."
Normal condition is not displayed for item No.33 :
Replace the ETACS-ECU.
Normal condition is not displayed for item No.71 :
Replace the power window main switch.
Step 3. SWS monitor data list
Check the SWS communication signal, which are
related to the power windows.
<Selected item> DOOR CNT. COM.
• Insert the probe (For the insertion point, refer to
• Turn the ignition switch to the ON position.
• Power window main switch: UP
OK: Normal condition is displayed.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the power window main switch.
Step 4. Retest the system.
Check that the all the power windows work.
Q: Is the check result normal?
Item No. Item name
Normal condition
Item 30
IG SW (IG1)
ON
Item 33
P/W SW ACCEPT PERMIT
Item 71
P/W ECU ACK
INPUT CHECK (only
momentarily when
switch is operated)
Item No.
Item name
Normal
condition
Item C0
PASS DOR UP
ON
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-133
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00
− How to
Cope with Intermittent Malfunction
NO :
Replace the power window main switch.
Inspection Procedure D-2: Driver's power window does not work by means of the power window main
switch. <LH drive vehicles>
Power Window (front: LH) Circuit <LHD>
FUSIBLE
LINK
5
POWER
WINDOW
RELAY
ETACS-ECU
POWER
WINDOW
MAIN SWITCH
POWER WINDOW
MOTOR
(FRONT: LH)
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
CPU
FRONT
(LH)
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