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