Mitsubishi Grandis. Manual — part 46
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-181
Step 3. Pulse check
Check the input signals below which are related to
the keyless entry system.
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 key reminder switch signal is not received. :
Refer to inspection procedure Q-11 "The
key reminder switch signal is not received
All the door switch signals are not received. :
Refer to inspection procedure Q-14 "All the
door switch signals are not received
The keyless entry transmitter switch signal is not
received. :
Refer to inspection procedure Q-23
"Each switch signal of the keyless entry
transmitter is not received
Step 4. 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.
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 adjustment 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?
System switch
Check condition
Key reminder switch
When the inserted
ignition key is pulled out
Driver's door switch
Driver's door is opened
while all the other doors
are closed.
Passenger’s door switch Passenger's door is
opened while all the
other doors are closed.
Rear door (RH) switch
Rear door (RH) is
opened while all the
other doors are closed
Rear door (LH) switch
Rear door (LH) door is
opened while all the
other doors are closed
Tailgate switch
TAilgate is opened while
all the other doors are
closed
Keyless entry transmitter
switch
When the switch is
turned from off to on
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-182
YES :
Go to Step 3.
NO :
Refer to inspection procedure P-2 "The
room lamp does not illuminate normally.
<Vehicles with keyless entry
system>
."
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 P-1 "The front
or rear room lamp does not illuminate or
extinguish
."
Step 4. Check the power supply circuit.
When the ignition switch is turned to the LOCK
(OFF) position, check if the hazard warning lamps
illuminate.
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Refer to inspection procedure A-2 "Check
the ETACS-ECU battery power supply
circuit
Step 5. Customize function by using the SWS
monitor.
Check that the keyless entry hazard lamp
answerback function has been enabled by using the
customize function.
CAUTION
The SWS monitor must be used in order to
confirm and change that setting. Use the SWS
monitor to confirm and/or change the
customized function.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Enable the keyless entry hazard lamp
answerback function by using the
adjustment function. (Refer to GROUP 54C
customize function
).
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) NOT USING SWS MONITOR
54B-183
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. Pulse check
Check the input signals below which are related to
the encrypted code of the keyless entry transmitter.
OK: The MUT-III sounds or the voltmeter
needle fluctuates.
Q: Are the check result normal?
INPUT SIGNAL
ETACS-ECU
· HAZARD WARNING LAMP SWITCH
· KEYLESS ENTRY TRANSMITTER SWITCH
· KEY REMINDER SWITCH
Encrypted Transmitter Code Register Mode
System switch
Check condition
Key reminder switch
When the inserted
ignition key is pulled out
Hazard warning lamp
switch
When the switch is
turned from off to on
Keyless entry transmitter
switch
When the switch is
turned from off to on
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-184
All the signals are received normally. :
Go to Step
The key reminder switch signal is not received. :
Refer to inspection procedure Q-11 "The
key reminder switch signal is not received
The hazard warning lamp switch signal is not
received. :
Refer to inspection procedure Q-12
"The hazard warning lamp switch signal is
not received
The keyless entry transmitter switch signal is not
received. :
Refer to inspection procedure Q-23
"Each switch signal of the keyless entry
transmitter is not received
Step 3. Pulse check
Check the input signals below which are related to
the encrypted code of the keyless entry transmitter.
OK: The MUT-III sounds or the voltmeter
needle fluctuates.
Q: Is the check result normal?
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. Retest the system.
Check that the encrypted code can be registered.
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.
Inspection Procedure E-4: The Timer Lock Function does not Work after the Doors have been
Unlocked by the Keyless Entry System.
CAUTION
Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENT ON TROUBLE SYMPTOM
If the keyless entry timer lock does not work
normally, the input signal circuit(s) to the keyless
entry transmitter or the ETACS-ECU may be
defective.
POSSIBLE CAUSES
• Malfunction of the keyless entry transmitter
• Function diagnosis by using the SWS monitor
Malfunction of the ETACS-ECU
• Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Check the operation of the keyless entry
system.
Check that the keyless entry system works normally.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Refer to inspection procedure E-1 "Keyless
entry system does not work
Step 2. Customize function by using the SWS
monitor.
Check that the keyless entry timer lock function has
been enabled by using the customize function.
CAUTION
The SWS monitor must be used in order to
confirm and change that setting. Use the SWS
monitor to confirm and/or change the
customized function.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Enable the keyless entry timer lock function
by using the SWS monitor customize
function. (Refer to GROUP 54C customize
function
Step 3. Retest the system.
Check that the timer 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.
System switch
Check condition
Keyless entry transmitter
switch
When the switch is
turned from off to on
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