Mitsubishi Grandis. Manual — part 181
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-186
YES :
Go to Step 4.
NO :
Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<RH drive vehicles>."
Step 4. Retest the system.
Check that the power window timer function 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 power window main switch.
KEYLESS ENTRY SYSTEM
Inspection Procedure E-1: Keyless entry system does not work.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the keyless entry system does not work normally,
the input signal circuits to the components below or
the ETACS-ECU may be defective.
• Key reminder switch
• All of the door switches
• Keyless entry transmitter
• Driver's door lock actuator
POSSIBLE CAUSES
• Malfunction of the key reminder switch
• Malfunction of the door switches
• Malfunction of the keyless entry transmitter
• Malfunction of the driver's door lock actuator
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the operation of the central door
locking system.
Check that the central door locking system works
normally.
Q: Is the check result normal?
YES :
Go to Step 2
NO :
Refer to Inspection Procedure C-1 "central
door locking system does not work
."
Keyless Entry System Function Circuit
ETACS-ECU
INPUT SIGNAL
· ALL OF THE DOOR SWITCHES
· DRIVER'S DOOR LOCK ACTUATOR SWITCH
· KEYLESS ENTRY TRANSMITTER SWITCH
· KEY REMINDER SWITCH
KEYLESS ENTRY
RECEIVER
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-187
Step 2. 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 3.
NO :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 3. Use the SWS monitor to examine the
keyless entry system for signal reception.
Check the condition of the keyless entry transmitter.
OK: By operating the switch as shown in the
table above, relevant normal conditions are
displayed.
Q: Are normal condition displayed?
YES :
Go to Step 4.
NO :
Refer to Inspection Procedure Q-23 "Each
switch signal of the keyless entry transmitter
is not received
."
Step 4. SWS monitor data list.
Check the SWS communication input signal, which
are related to the keyless entry system.
<Selected item> ETACS
• Driver’s door: Lock → Unlock
OK: Normal condition is displayed.
Q: Is normal condition displayed?
YES :
Go to Step 5.
NO :
Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<LH drive vehicles>
vehicles>
."
Step 5. ETACS switch data by using the SWS
monitor.
Check the ETACS-ECU signal related to the keyless
entry system.
• Ignition switch: OFF (key inserted)
• Open the doors other than the driver's door
(including the tailgate).
OK: Normal conditions are displayed for all
the items.
Q: Are the check result normal?
Normal conditions displayed for all the items :
Go
to Step 6.
Normal condition is not displayed for item No.03. :
Refer to inspection procedure Q-11 "The
key reminder switch signal is not received
."
Normal condition is not displayed for item 05, 07,
41 or 42. :
Refer to inspection procedure Q-14 "All
the door switch signals are not received
."
Step 6. Retest the system.
Check the keyless entry system 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.
Operation switch
Normal conditions
(received signal)
LOCK
LOCK
UNLOCK
UNLOCK
Item No.
Item name
Normal condition
Item 32
DR DOR SW
from OFF to ON
Item No. Item name
Normal condition
Item 03
KEY REMINSW
OFF
Item 05
PASS DOORSW
from OFF to ON
Item 07
TRK LID LASW
from OFF to ON
Item 41
R.DOOR (RH) SW from OFF to ON
Item 42
R.DOOR (LH) SW from OFF to ON
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-188
INSPECTION PROCEDURE E-2: Keyless Entry hazard lamp answerback function or the Room Lamp
Answerback Function does not Work Normally.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the hazard warning lamp and the room lamp work
normally, the ETACS-ECU may be defective.
Alternatively, it is possible that the keyless entry
hazard lamp answerback function was disabled by
the customize function.
POSSIBLE CAUSES
• Defective turn-signal lamp
• Malfunction of the room lamp
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the operation of the hazard
warning lamp.
Check that the hazard warning lamps illuminate
normally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to inspection procedure N-2 "The
hazard warning lamps do not illuminate
Step 2. Check the operation of the room lamps.
Check that the room lamps illuminate normally.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Refer to inspection procedure P-2 "The
room lamp does not illuminate normally
<Vehicles with keyless entry>
Step 3. Check the operation of the keyless entry
system.
If the keyless entry system is operated, check that
the doors can be locked and unlocked normally.
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Refer to inspection procedure E-1 "Keyless
entry system does not work
."
Step 4. Customize function by using the SWS
monitor.
Check that "KEYLESS HAZARD" is set to other than
"NO BLINK" by using the SWS monitor
customisation function.
• LOCK1, UNLOCK2
• LOCK1, UNLOCK0
• LOCK0, UNLOCK2
• LOCK2, UNLOCK1
• LOCK2, UNLOCK0
• LOCK0, UNLOCK1
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Set "KEYLESS HAZARD" to other than "NO
BLINK" by using the SWS monitor
customisation function (Refer to
).
Step 5. 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
ECU TO BE CHECKED
• ETACS ECU
OK: "OK" is displayed on the "ETACS ECU"
menu.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible
Step 6. Retest the system.
Check that the keyless entry hazard lamp
answerback function or the room lamp answerback
function work 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.
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) USING SWS MONITOR
54C-189
INSPECTION PROCEDURE E-3: Encrypted Code cannot be Registered.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the encrypted code registration mode is not
entered, the key reminder switch, the hazard warning
lamp switch or the ETACS-ECU may be defective.
If the registration is not possible although the
registration mode is entered, the keyless entry
transmitter or the ETACS-ECU may be defective.
POSSIBLE CAUSES
• Malfunction of the keyless entry transmitter
• Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the encrypted code registration
mode.
Check that the encrypted code registration mode is
entered.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Go to Step 2.
Step 2. ETACS switch data by using the SWS
monitor.
Check the relevant ETACS-ECU signal before
entering the encrypted code registration mode.
• Ignition switch: OFF (key inserted)
• Hazard lamp switch: ON
OK: Normal conditions are displayed for all
the items.
Q: Are the check result normal?
Normal conditions displayed for all the items :
Go
to Step 3.
Normal condition is not displayed for item No.03. :
Refer to inspection procedure Q-11 "The
key reminder switch signal is not received
."
Normal condition is not displayed for item No.04. :
Refer to inspection procedure Q-12 "The
hazard warning lamp switch signal is not
received
INPUT SIGNAL
ETACS-ECU
· HAZARD WARNING LAMP SWITCH
· KEYLESS ENTRY TRANSMITTER SWITCH
· KEY REMINDER SWITCH
Encrypted Transmitter Code Register Mode
Item No. Item name
Normal condition
Item 03
KEY REMIN SW
OFF
Item 04
HAZARD LMP SW ON (only when
switch is operated)
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