Mitsubishi Grandis. Manual — part 50
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-197
COMMENTS ON TROUBLE SYMPTOM
If the sunroof timer function does not work, the input
circuit from the ignition switch (IG1) or the driver's
door switch, the communication lines between the
ETACS-ECU and the sunroof motor assembly
(sunroof-ECU), the sunroof motor assembly
(sunroof-ECU) or the ETACS-ECU may be defective.
POSSIBLE CAUSES
• Malfunction of ETACS-ECU
• Malfunction of the sunroof motor assembly
(sunroof-ECU)
• Damaged harness wires and connectors
Sunroof Timer Function <RHD>
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
CONTROL CIRCUIT
IGNITION
SWITCH (IG2)
SUNROOF MOTOR
ASEEMBLY
ETACS-ECU
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-198
DIAGNOSTIC PROCEDURE
Step 1. Pulse check
Check the input signals from the ignition switch (IG1)
and the driver's door switch.
OK: The MUT-III sounds or the voltmeter
needle fluctuates.
Q: Are the check result normal?
All the signals are received normally. :
Go to Step
The ignition switch (IG1) signal is not received. :
Refer to inspection procedure Q-2 "The
ignition switch (IG1) signal is not received
The driver’s door switch signal is not received. :
Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<LH drive vehicles>
or <RH
drive vehicles>
Step 2. Connector check: E-07 sunroof motor
assembly connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the connector.
Step 3. Voltage measurement at the E-07 sunroof
motor assembly connector.
(1) Disconnect the sunroof motor assembly
connector, and measure at the harness side.
(2) Ignition switch: ON
(3) Check the voltage between E-07 sunroof motor
assembly connector terminal No.2 and body
earth.
OK: Battery positive voltage
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
System switch
Check conditions
Ignition switch (IG1)
When turned from ACC
to ON
Driver’s door switch
When the driver’s door is
opened
AC310651
Connector: E-07 <LHD>
AE
Harness side
AC310655
Connector: E-07 <RHD>
AF
Harness side
AC310651
Connector: E-07 <LHD>
AE
Harness side
AC310655
Connector: E-07 <RHD>
AF
Harness side
AC310507 CH
Connector E-07
(harness side)
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-199
Step 4. Check the wiring harness between E-07
sunroof motor assembly connector terminal No.2
and the ignition switch (IG2).
NOTE:
Prior to the wiring harness inspection, check junction
block connectors C-211 and C-202, and repair if
necessary.
• Check the power supply line 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.
AC310651
Connector: E-07 <LHD>
AE
Harness side
AC310655
Connector: E-07 <RHD>
AF
Harness side
AC310624
Connectors: C-202, C-211
AV
<LHD>
Junction block (Front view)
C-211
C-202
C-202
C-211
Harness side
Harness side
4
6 5
3
2
1
3
1
2
AC310619
Connectors: C-202, C-211
AV
<RHD>
Junction block (Front view)
C-211
C-202
C-202
C-211
Harness side
Harness side
4
6 5
3
2
1
3
1
2
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-200
Step 5. Connector check: C-221 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the connector.
AC310626
Connector: C-221 <LHD>
AG
Junction block (rear view)
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 <RHD>
AF
Junction block (rear view)
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)
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