Mitsubishi Grandis. Manual - part 111

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-441

DIAGNOSTIC PROCEDURE

Step 1. Connector check: C-301 column switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Step 2. Resistance measurement at the C-301 
column switch connector.

(1) Disconnect the connector, and measure at the 

column switch side.

(2) Resistance between C-301 column switch 

connector terminal No.6 and body earth

OK: The resistance should rise from 0 to 
1 k

Ω when the windshield intermittent 

wiper volume is rotated from "Fast" to 
"Slow".

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the column switch.

AC310153

Connector: C-301 <LHD>

AI

Column switch side

AC310183

Connector: C-301 <RHD>

AI

Column switch side

AC310153

Connector: C-301 <LHD>

AI

Column switch side

AC310183

Connector: C-301 <RHD>

AI

Column switch side

AC301541

   Connector C-301
(Column switch side)

ID

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-442

Step 3. Connector check: C-221 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

Step 4. Check the wiring harness between C-301 
column switch connector terminal No.6 and 
C-221 ETACS-ECU connector terminal No.66.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

AC312037

Connector: C-221  <LHD>

Junction block (Rear view)

AD

Harness side

AC312047

Connector: C-221  <RHD>

Junction block (Rear view)

AD

Harness side

AC312039

Connector: C-301

AC

Harness side

<LHD>

AC312049

Connector: C-301 <RHD>

AC

Harness side

AC312037

Connector: C-221  <LHD>

Junction block (Rear view)

AD

Harness side

AC312047

Connector: C-221  <RHD>

Junction block (Rear view)

AD

Harness side

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-443

Step 5. Retest the system.
Check that the windshield intermittent wiper volume 
is sending a correct signal.

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.

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-444

Inspection Procedure Q-9: When the power window main switch is operated, the switch signals are 
not received.

CAUTION

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

POWER
WINDOW RELAY

ETACS-ECU

DIAGNOSIS
CONNECTOR

POWER WINDOW
MAIN SWITCH

FUSIBLE
LINK

5

FRONT SIDE

J/B SIDE

CPU

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

Power Window Main Switch Input Circuit <LHD>