Mitsubishi Montero (2004+). Manual — part 814

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-513

INSPECTION PROCEDURE O-4: ETACS-ECU does not receive "R" position signal from the
transmission range switch.

Transmission Range Switch Input Circuit

AC204395

CONNECTOR : C-04

A-04(B)

AC

AC204170

CONNECTOR: D-01

AY

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-514

.

CIRCUIT OPERATION
The ETACS-ECU operates the rear wiper according
to signal from the transmission range switch.

.

TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the rear wiper does not
operate consecutively twice when the selector lever
is moved to the "R" position with the rear wiper on. If
the signal is not normal, the transmission range
switch or the ETACS-ECU may be defective.

NOTE: The transmission range switch is shared with
the automatic transmission control system. If this
problem is not solved, carry out the troubleshooting
regarding the automatic transmission control system.
Refer to GROUP 23A, A/T Diagnosis

P.23A-11

.

.

TROUBLESHOOTING HINTS

• The transmission range switch may be defective

• The ETACS-ECU may be defective

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals 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

AC204171

CONNECTOR : D-116

AI

AC204173

CONNECTORS: D-208, D-212

D-208

D-212

AX

AC204174

CONNECTOR : D-224

D-224(B)

AG

AC204176

CONNECTORS: E-11, E-111, E-114

E-111

AS

E-114

E-11

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-515

STEP 1. Check transmission range switch connector C-04
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is transmission range switch connector C-04 in good

condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the rear wiper operates normally, it

indicates that a correct "R" position signal is sent from
the transmission range switch.

STEP 2. Check the transmission range switch.
Disconnect transmission range switch connector C-04. Then
check continuity between the switch terminals.

Q: Is the transmission range switch in good condition?

YES : Go to Step 3.
NO : Replace the transmission range switch. If the rear

wiper operates normally, it indicates that a correct "R"
position signal is sent from the transmission range
switch.

AC204395

CONNECTOR : C-04

HARNESS
SIDE

C-04(B)

C-04(B)

AB

1
6

3
8

4
9

5

10

7

2

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

P, N, D

7

− 8

Open circuit

R

7

− 8

Less than 2 ohms

ACX01187

P

1

2

3

D

N

R

AC

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-516

STEP 3. Check the ignition switch (IG1) line of the power
supply circuit to the transmission range switch. Test at
transmission range switch connector C-04.
(1) Disconnect transmission range switch connector C-04 and

measure the voltage available at the wiring harness side of
the connector.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 7 and ground.

• The voltage should equal approximately 12 volts (bat-

tery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 5.
NO : Go to Step 4.

STEP 4. Check the wiring harness between transmission
range switch connector C-04 (terminal 7) and the ignition
switch (IG1).

AC204395

CONNECTOR : C-04

HARNESS
SIDE

C-04(B)

C-04(B)

AB

1
6

3
8

4
9

5

10

7

2

5 4 3 2 1

10 9 8 7 6

ACX01598AB

CONNECTOR C-04
(HARNESS SIDE)

AC204395

CONNECTOR : C-04

HARNESS
SIDE

C-04(B)

C-04(B)

AB

1
6

3
8

4
9

5

10

7

2