Mitsubishi Grandis. Manual — part 45

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-177

Step 25. Connector check: F-18 power window
sub switch (rear: RH) connector

Q: Is the check result normal?

YES :

Go to Step 26.

NO :

Repair the defective connector.

Step 26. Check the wiring harness from F-18
power window sub switch (rear: RH) connector
terminal Nos.2, 8 and 3 to F-19 power window
motor (rear: RH) connector terminal Nos.2, 4 and
5.

• Check the input and output lines to the revolution

detection sensor for open or short circuit.

Q: Is the check result normal?

YES :

Go to Step 27.

NO :

Repair the wiring harness.

Step 27. Retest the system.

After the power window sub switch (rear: RH) is
replaced, check that the rear right door anti-trap
function can be operated by the power window sub
switch.
(1) Replace the power window sub switch (rear: RH).
(2) Check that the rear right power window anti-trap

function works.

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 power window motor (rear:
RH).

Step 28. Connector check: F-01 power window
motor (rear: LH) connector

Q: Is the check result normal?

YES :

Go to Step 29.

NO :

Repair the defective connector.

Step 29. Resistance measurement at F-01 power
window motor (rear: LH) connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Resistance between F-01 power window motor

(rear: LH) connector terminal No.6 and body
earth.

OK: 2

Ω or less

Q: Is the check result normal?

YES :

Go to Step 31.

NO :

Go to Step 30.

AC310216

Connector: F-18

F-18(B)

AB

Harness side

AC310216

AC310216

Connectors: F-18, F-19

F-18(B)

AD

Harness side

F-18

F-19(B)

Harness side

F-19

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC311338

Connector F-01
(Harness Side)

AD

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-178

Step 30. Check the wiring harness from F-01
power window motor (rear: LH) connector
terminal No.6 to body earth.

NOTE:

Prior to the wiring harness inspection, check
intermediate connector D-16, and repair if necessary.

• Check the input and output lines to the revolution

detection sensor for open or short circuit.

Q: Is the check result normal?

YES :

Go to Step 31.

NO :

Repair the wiring harness.

Step 31. Connector check: F-02 power window
sub switch (rear: LH) connector

Q: Is the check result normal?

YES :

Go to Step 32.

NO :

Repair the defective connector.

Step 32. Check the wiring harness from F-02
power window sub switch (rear: LH) connector
terminal Nos.8, 2 and 3 to F-01 power window
motor (rear: LH) connector terminal Nos.4, 2 and
5.

• Check the input and output lines to the revolution

detection sensor for open or short circuit.

Q: Is the check result normal?

YES :

Go to Step 33.

NO :

Repair the wiring harness.

Step 33. Retest the system.
After the power window sub switch (rear: LH) is
replaced, check that the rear left door anti-trap
function can be operated by the power window sub
switch.
(1) Replace the power window sub switch (rear: LH).
(2) Check that the rear left power window anti-trap

function works.

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 power window motor (rear: LH).

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC310207

AB

Connector: D-16

AC310209

Connector: F-02

F-02(B)

AB

Harness side

AC310210

AC310210

Connectors: F-01, F-02

F-02(B)

AB

Harness side

F-01(B)

F-02

F-01

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-179

Inspection Procedure D-7: The power window timer 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 power window timer function does not work
normally, these input signal circuit(s), the power
window main switch or the ETACS-ECU may be
defective.

POSSIBLE CAUSES

• Malfunction of the driver's door switch

• Malfunction of the power window main switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. 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 2.

NO :

Refer to inspection procedure A-2 "Check
the ETACS-ECU battery power supply
circuit"

P.54B-87

.

Step 2. Pulse check
Check the input signals below, which are related to
the power window timer function.

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

3.

The ignition switch (IG1) signal is not received. :

Refer to inspection procedure Q-2 "The
ignition switch (IG1) signal is not received

P.54B-420

."

The driver’s door switch signals is not received. :

Refer to inspection procedure Q-5 "The
driver's door switch signal is not received

P.54B-434

<LH drive vehicles> or

P.54B-436

<RH drive vehicles>."

The power window main switch signal is not
received. :

Refer to inspection procedure Q-9

"When the power window main switch is
operated, the switch signals are not
received

P.54B-444

."

Step 3. Retest the system.
After the power window main switch is replaced,
check that the power window timer function works
normally.
(1) Replace the power window main switch.
(2) 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

P.00-5

).

NO :

Replace the ETACS-ECU.

System switch

Check conditions

Ignition switch (IG1)

When turned from ACC
to ON

Driver's door switch

When the driver's door is
opened

Power window main
switch

When turned from off to
on

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-180

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

P.54B-99

."

Step 2. 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 3.

NO :

Refer to inspection procedure A-2 "Check
the ETACS-ECU battery power supply
circuit

P.54B-87

."

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