Mitsubishi Grandis. Manual — part 47

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-185

Inspection Procedure E-5: Multimode keyless entry system function does not work at all.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the electric-folding door mirrors work normally, the
ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the keyless entry transmitter

DIAGNOSTIC PROCEDURE

Step 1. Check the operation of the electric folding
outside rear-view mirrors.
Check that the electric folding outside rear-view
mirrors operate normally by using the remote
controlled mirror switch (folding/unfolding switch).

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to Inspection Procedure J-1 "Electric
retractable remote controlled door mirror
does not work at all.

P.54B-250

."

Step 2. Check the keyless entry transmitter.
Check that the keyless entry system works normally.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Refer to inspection procedure E-1 "Keyless
entry system does not work

P.54B-180

."

Step 3. 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 4.

NO :

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

P.54B-87

."

Step 4. Pulse check
Check the input signals which are related to the
multimode keyless entry system.

OK: The MUT-III sounds or the voltmeter
needle fluctuates.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Refer to inspection procedure Q-23 "Each
switch signal of the keyless entry transmitter
is not received

P.54B-523

."

Step 5. Retest the system.
Check that the multimode 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.

System switch

Check conditions

Keyless entry transmitter
switch

When the switch is
turned from off to on

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-186

SUNROOF

Inspection Procedure F-1: The sunroof does not work at all.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the sunroof does not work at all, these power
supply circuit(s), these earth circuit(s), sunroof switch
or the sunroof motor assembly (sunroof-ECU) may
be defective.

POSSIBLE CAUSES

• Malfunction of the sunroof switch

• Malfunction of the sunroof motor assembly

(sunroof-ECU)

• Malfunction of the power window main switch

• Damaged harness wires and connectors

Sunroof Motor Assembly Power Supply Circuit

CONTROL CIRCUIT

IGNITION
SWITCH (IG2)

FUSE
BOX

<LHD>

<RHD>

SUNROOF MOTOR
ASEEMBLY

5

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

FUSIBLE
LINK

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-187

DIAGNOSTIC PROCEDURE

Step 1. Check the power window main switch.
Check that the power window lock switch is turned
off.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Turn off the power window lock switch.

Step 2. Pulse check
Check the input signals from the ignition switch (IG1)
and the sunroof switch.

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 sunroof switch signal is not received. :

Refer

to inspection procedure Q-10 "When the
sunroof switch is operated, the switch
signals are not received

P.54B-451

."

Step 3. Check the power window main switch.
Check that all of the front passenger's and rear door
power windows can operate by means of the power
window main switch.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to Inspection Procedure D-1 "Power
windows do not work at all

P.54B-124

."

Step 4. Connector check: E-07 sunroof motor
assembly connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the connector.

Step 5. Voltage measurement at the E-07 sunroof
motor assembly connector.

(1) Disconnect the sunroof motor assembly

System switch

Check conditions

Ignition switch (IG1)

When turned from ACC
to ON

sunroof switch

When the sunroof switch
is opened or closed

AC310651

Connector: E-07 <LHD>

AE

Harness side

AC310655

Connector: E-07 <RHD>

AF

Harness side

AC310651

Connector: E-07 <LHD>

AE

Harness side

AC310655

Connector: E-07 <RHD>

AF

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-188

connector, and measure at the harness side.

(2) Check the voltage between the E-07 sunroof

motor assembly connector terminal No.1 and
body earth.

OK: Battery positive voltage

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Go to Step 6.

AC310507 CF

Connector E-07
(harness side)