Mitsubishi Grandis. Manual - part 60

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-237

Prior to the wiring harness inspection, check 
intermediate connector G-14and junction block 
connectors C-202, C-210, and repair if necessary.

• Check the power supply line for open or short 

circuit.

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 : 

Repair the wiring harness.

Step 5. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector.

AC310624

Connectors: C-202, C-210 <LHD>

AT

Junction block (Front view)

C-210

C-202

C-210

Harness side

C-202

Harness side

AC310619

Connectors: C-202, C-210 <RHD>

AT

Junction block (Front view)

C-210

C-202

C-210

Harness side

C-202

Harness side

AC310222

Connector: G-14

AF

2

1

4

3

13

8

11

10

5

7

12

6

14

9

AC310626AD

Connector: C-219 <LHD>
Junction block (Rear view)

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-238

Step 6. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.17 and G-05 
rear wiper motor connector terminal No.2.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector G-14, junction block 
connectors C-210, and repair if necessary.

• Check the power supply line for open or short 

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 rear wiper auto stop 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.

AC310626AD

Connector: C-219 <LHD>
Junction block (Rear view)

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

AC310222

Connector: G-05 

AH

Harness side

AC310623

Connector: C-210

AN

<LHD>

Junction block (Front view)

Harness side

AC310618

Connector: C-210 <RHD>

AO

Junction block (Front view)

Harness side

AC310222

Connector: G-14

AF

2

1

4

3

13

8

11

10

5

7

12

6

14

9

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-239

INSPECTION PROCEDURE H-3: When the selector lever is moved to "R" position during the rear 
wiper operation, the rear wiper does not operate at the continuous mode. <A/T>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the rear wiper does not operate consecutively 
when the selector lever is moved to the R position 
during the rear wiper operation, the shift position 
input signal circuit or the ETACS-ECU may be 
defective.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the operation of the rear wiper.
Check that the rear wiper system should work 
normally by operating the rear wiper switch.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure H-1 "Rear 
wiper does not work at all 

P.54B-230

."

Step 2. Pulse check
Check the input signal, which are related to the R 
(reverse) gear-linked rear wiper operation.

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

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to diagnosis code No.11 inspection 
procedure  "Engine-A/T-ECU time-out 
(related to engine) 

P.54B-68

 ."

Step 3. Retest the system.
Check that the rear wiper operates consecutively 
when the selector lever is moved to the R position 
during the rear wiper operation.

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.

"R" Position During Wiper Operation Circuit <A/T>

ETACS-ECU

· IGNITION SWITCH (IG1)
· REAR WIPER SWITCH

ENGINE-A/T-
ECU

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

INPUT SIGNAL

INPUT SIGNAL

INHIBITOR SWITCH ("R" POSITION)

System switch

Check condition

Inhibitor switch (reverse 
position)

When the ignition switch 
is turned ON and the 
selector lever is moved 
to the R position.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-240

INSPECTION PROCEDURE H-3: When the shift lever is moved to "R" position during the rear wiper 
operation, the rear wiper does not operate at the continuous mode. <M/T>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the rear wiper does not operate consecutively 
when the selector lever is moved to the R position 
during the rear wiper operation, the input signal 
circuit to the back-up lamp switch ("R" position) or 
the ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the back-up lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Step 1. Confirm the operation of the rear wiper.
Check that the rear wiper work normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure H-1 "The rear 
wiper does not work at all 

P.54B-230

."

Step 2. Pulse check
Check the input signal, which are related to the R 
(reverse) gear-linked rear wiper operation.

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

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to inspection procedure Q-3 "The 
back-up lamp switch signal is not received 

P.54B-423

."

Step 3. Retest the system.
Check that the rear wiper operates consecutively 
when the shift lever is moved to the R position during 
the rear wiper operation.

Q: Is the check result normal?

IGNITION
SWITCH (ACC)

ETACS-ECU

J/B SIDE

REAR
WIPER
RELAY

INPUT SIGNAL

· BACK-UP LAMP SWITCH
· REAR WIPER SWITCH

REAR WIPER
MOTOR

"R" Position During Rear Wiper Operation Circuit <M/T>

System switch

Check condition

Back-up lamp 
switch

When the ignition switch is 
turned ON and the shift lever is 
moved to the R position.