Mitsubishi Grandis. Manual — part 129

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-513

Step 6. Check the wiring harness between C-129
remote controlled mirror switch connector
terminal No.4 and C-220 ETACS-ECU connector
terminal No.24.

• Check the input line for open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

Step 7. Retest the system.
Check that the remote controlled mirror switch signal
is received 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.

AC312031

AB

Connector: C-129

Harness side

<LHD>

AC312043AB

Connector: C-129 <RHD>

Harness side

AC312037

Connector: C-220

Junction block (Rear view)

AC

<LHD>

Harness side

AC312047

Connector: C-220

Junction block (Rear view)

AC

<RHD>

Harness side

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-514

Inspection procedure Q-22: The interior lamp "all on" or "all off" switch signal is not sent to the
ETACS-ECU.

CAUTION

Whenever the ECU is replaced, ensure that the
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

Input signals from the interior lamp "ON" and "OFF"
switch are used to operate the interior lamps (interior
lamp, rear personal lamp, luggage compartment
lamp, door lamps and key illumination lamp). If the
signals are abnormal, the interior lamps will not
illuminate and extinguish normally.

POSSIBLE CAUSES

• Malfunction of the interior lamp (interior lamp

switch)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-ECU

ROOM LAMP

NOTE

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

RHD
LHD

Interior Lamp Input Circuit

INTERIOR
LAMP
SWITCH

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-515

DIAGNOSTIC PROCEDURE

Step 1. Connector check: E-02 interior lamp
connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the connector.

Step 2. Check the interior lamp.
Refer to GROUP 54A

− Interior lamp

P.54A-95

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the interior lamp.

Step 3. Resistance measurement at the E-02
interior lamp connector.

(1) Disconnect the connector, and measure at the

AC312060

AB

Harness side

Connector: E-02
<Vehicles without sunroof-LHD>

AC312065

AB

Harness side

Connector: E-02
<Vehicles without sunroof-RHD>

AC312062

AD

Harness side

Connector: E-02
<Vehicles with sunroof-LHD>

AC312067

AD

Harness side

Connector: E-02
<Vehicles with sunroof-RHD>

AC312060

AB

Harness side

Connector: E-02
<Vehicles without sunroof-LHD>

AC312065

AB

Harness side

Connector: E-02
<Vehicles without sunroof-RHD>

AC312062

AD

Harness side

Connector: E-02
<Vehicles with sunroof-LHD>

AC312067

AD

Harness side

Connector: E-02
<Vehicles with sunroof-RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-516

wiring harness side.

(2) Resistance between E-02 interior lamp connector

terminal No.5 and body earth

OK: 2

Ω or less

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

AC312730AQ

Connector E-02
(Harness side)