Mitsubishi Montero (2004+). Manual — part 754

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-273

STEP 9. Check the wiring harness between rear wiper
motor connector I-07 (terminal 1) and ground.
Q: Is the wiring harness between rear wiper motor

connector I-07 (terminal 1) and ground in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the connector

may have loose, corroded or damaged terminals, or
terminals pushed back in the connector. Repair the
wiring harness as necessary. Verify that the
windshield wiper works normally.

INSPECTION PROCEDURE H-2: Rear Wiper and Washer: Rear wiper does not stop at the
predetermined park position.

.

ACX02293

CONNECTOR: I-07

AR

I-07(B)

I-07(B)

(HARNESS SIDE)

1

2

3

4

Rear Wiper Drive Circuit

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-274

TECHNICAL DESCRIPTION (COMMENT)
If the rear wiper does not stop at predetermined park
position, the rear wiper motor or the ETACS-ECU
may be defective.

.

TROUBLESHOOTING HINTS

• The rear wiper motor may be defective

• The ETACS-ECU may be defective

• The wiring harness may be damaged of the con-

nectors may have loose, corroded or damaged
terminals, or terminals pushed back in the con-
nector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

Check the input signal (by using the pulse check mode of
the monitor.)
Check the automatic stop signal, which the rear wiper motor
sends to the ETACS-ECU.
NOTE: When the rear wiper is operated, a signal is sent to the
ETACS-ECU.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Operate scan tool MB991958 according to the procedure

below to display "PULSE CHECK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."

(3) Check that scan tool MB991958 sounds.
Q: Does scan tool MB991958 sound when the rear wiper

switch is operated?
YES : Replace the ETACS-ECU. The rear wiper should stop

automatically at the predetermined park position.

NO : Refer to Inspection Procedure P-8 "ETACS-ECU does

not receive an automatic stop signal from the wiper
motor

P.54B-615

."

AC307591 AB

MB991911

DATA LINK

CONNECTOR

MB991824

MB991827

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-275

INSPECTION PROCEDURE H-3: Rear Wiper and Washer: When the selector lever is moved to "R"
position during the rear wiper operation, the rear wiper does not operate at the continuous mode.

NOTE: This troubleshooting procedure requires use
of scan tool MB991958 and SWS monitor kit
MB991862. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor

P.54B-10

."

.

CIRCUIT OPERATION
The ETACS-ECU operates the rear wiper consecu-
tively approximately twice when the selector lever is
moved to "R" position while the rear wiper is turned
on.

.

TECHNICAL DESCRIPTION (COMMENT)
If the rear wiper does not work consecutively approx-
imately twice, the transmission range switch ("R"
position) or the ETACS-ECU may be defective.

.

TROUBLESHOOTING HINTS

• The transmission range switch may be defective

• The ETACS-ECU may be defective

• The wiring harness may be damaged or the con-

nectors may have loose, corroded or damaged
terminals, pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

"R" Position during Rear Wiper Operation Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-276

STEP 1. Verify the rear wiper operation.
Q: Does the rear wiper operate normally?

YES : Go to Step 2.
NO : Refer to Inspection Procedure H-1 "Rear wiper does

not work at all

P.54B-265

."

STEP 2. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Set each switch to the following condition before checking input
signal from the transmission range switch ("R" position).

• Ignition switch: ON

• Rear wiper switch: ON

• Shift position: "R" position

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the special tool. Refer to "How to connect SWS

monitor

P.54B-7

(2) Connect SWS monitor kit MB991862 to the data link

connector (13-pin).

(3) Operate scan tool MB991958 according to the procedure

below to display "REV. INTERLOCK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "REAR WIPER."
6. Select "REV. INTERLOCK."

(4) Check that normal conditions are displayed on the item

described in the table below.

Q: Are normal conditions displayed?

YES : Replace the ETACS-ECU. When the selector lever is

moved to the "R" position, the rear wiper should
operate consecutively approximately twice.

NO : Refer to Inspection Procedure O-4 "ETACS-ECU

does not receive "R" position signal from the
transmission range switch

P.54B-513

."

ITEM NO.

ITEM NAME

NORMAL CONDITION

ITEM 41

PNP SW (R)

ON

AC309091

MB991911

MB991827

MB991824

AB

MB991806

MB991862

DATA LINK
CONNECTOR
(16-PIN)

DATA LINK
CONNECTOR
(13-PIN)