Mitsubishi Grandis. Manual — part 275
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-562
Inspection Procedure Q-23: Each switch signal of the keyless entry transmitter is not received.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the keyless entry transmitter is
used to operate the keyless entry system. If the
signal is abnormal, the keyless entry system will not
work normally.
• Keyless entry system
• Keyless entry hazard answerback
• Multimode keyless entry system
POSSIBLE CAUSES
• Malfunction of the keyless entry transmitter
• Defective battery of the keyless entry transmitter
• Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
Step 1. Pulse check
Check whether the ETACS-ECU receives signal from
a transmitter or not. For this check, you should use
the 2-button-type transmitter (integrated with a key),
which cover screw is silver and has already been
registered.
NOTE: For how to register the keyless entry
transmitter encrypted code, refer to GROUP 42
−
On-vehicle Service
.
OK: The MUT-III sounds or the voltmeter
needle fluctuates.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Go to Step 4.
Step 2. Check the transmitter battery.
Refer to GROUP 42
− Keyless entry system
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Replace the keyless entry transmitter
battery.
Step 3. Register the encrypted code, and then
retest the system.
(1) Register the keyless entry transmitter again.
(2) Check that each signal is received from the
keyless entry transmitter.
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 keyless entry transmitter.
Step 4. Retest the system.
Check that each signal is received from the keyless
entry transmitter.
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.
W3Z10E39AA
KEYLESS ENTRY
TRANSMITTER
KEYLESS ENTRY
RECEIVER
ETACS-ECU
Transmitter Input Circuit
System switch
Check condition
Keyless entry transmitter
"LOCK/UNLOCK" switch
When the switch is
turned from off to on
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-563
Inspection Procedure Q-24: Interior lamp loaded signal is not detected.
CAUTION
Whenever the ECU is replaced, ensure that the
input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
The interior lamp automatic-shutdown function
operates in accordance with the interior lamp loaded
signal. If this signal is abnormal, the functions below
will not work normally.
• Interior lamps
• Interior lamp automatic-shutdown function
POSSIBLE CAUSES
• Malfunction of the ETACS-ECU
• Damaged wiring harness or connector(s)
Interior Lamp Automatic Shut-off Function Circuit
IGNITION
SWITCH (IG1)
IGNITION
SWITCH (ACC)
RELAY
BOX
<LHD>
<RHD>
· DOOR LAMP
· LUGGAGE
COMPARTMEMT LAMP
· ROOM LAMP
· REAR PERSONAL LAMP
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
LOAD
DETERMINATION
CIRCUIT
ETACS-ECU
POWER
SOURCE
J/B SIDE
KEEP
RELAY
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-564
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 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 2.
NO :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 2. Connector check: C-219 ETACS-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
Step 3. Voltage measurement at the C-219
ETACS-ECU connector.
(1) Remove the ETACS-ECU, and measure at the
junction block side.
(2) Turn the ignition switch to the ON position.
(3) Voltage between C-219 ETACS-ECU connector
terminal No.8 and body earth
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
AC312037
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC312047
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<RHD>
AC312037
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC312047
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<RHD>
AC312731AC
Connector C-219
(Junction block side)
2019
7
13
17
18
1615 14
10
11
12
9 8
2
6 5
3
4
1
INPUT SIGNAL PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-565
Step 4. Check the wiring harness between C-219
ETACS-ECU connector terminal No.8 and the
ignition switch (IG1).
NOTE:
Prior to the wiring harness inspection, check junction
block connector C-202, and repair if necessary.
• Check the power supply line to the ignition switch
(IG1) 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. Voltage measurement at the C-219
ETACS-ECU connector.
(1) Remove the ETACS-ECU, and measure at the
junction block side.
(2) Turn the ignition switch to the ACC position.
(3) Voltage between terminal 4 and body earth
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 6.
AC312037
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC310620
Connector: C-219
Junction block
(Rear view)
<RHD>
AB
Junction block side
AC312035AB
Connector: C-202
Harness side
<LHD>
Junction block (Front view)
AC312045
AB
Connector: C-202
Junction block (Front view)
Harness side
<RHD>
AC312037
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<LHD>
AC312047
Connector: C-219
Junction block (Rear view)
Junction block side
AB
3
1
2
14
4
5
7 6
8
1110 9
1312
17
15
16
18
19
20
<RHD>
AC312731AF
Connector C-219
(Junction block side)
2019
7
13
17
18
1615 14
10
11
12
9 8
2
6 5
3
4
1
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст