Mitsubishi Grandis. Manual - part 46

 

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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 

4.

The key reminder switch signal is not received. : 

Refer to inspection procedure Q-11 "The 
key reminder switch signal is not received 

P.54B-457

."

All the door switch signals are not received. : 

Refer to inspection procedure Q-14 "All the 
door switch signals are not received 

P.54B-469

."

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 

P.54B-523

."

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 

P.00-5

).

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 

P.54B-314

".

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>

P.54B-372

 ."

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 

P.54C-374

."

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 

P.54B-87

."

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 

P.54C-574

).

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 

P.00-5

).

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 

3.

The key reminder switch signal is not received. : 

Refer to inspection procedure Q-11 "The 
key reminder switch signal is not received 

P.54B-457

."

The hazard warning lamp switch signal is not 
received. : 

Refer to inspection procedure Q-12 

"The hazard warning lamp switch signal is 
not received 

P.54B-461

."

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 

P.54B-523

."

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 

P.54B-523

."

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 

P.00-5

).

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 

P.54B-180

."

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 

P.54C-574

).

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 

P.00-5

).

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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