Mitsubishi Outlander (2013+). Manual - part 673

REVERSING SENSOR (CORNER SENSOR AND BACK SENSOR)

CHASSIS ELECTRICAL

54A-177

REVERSING SENSOR (CORNER SENSOR AND BACK 

SENSOR)

SPECIAL TOOLS

M1540701900169

Tool

Number

Name

Use

ACB05421

MB992745

MB992746

MB992744

MB992747

MB992748

a

b

c

d

e

DO NOT USE

AB

a. MB992744
b. MB992745
c. MB992746
d. MB992747
e. MB992748

a. Vehicle 

communication 
interface-Lite 
(V.C.I.-Lite)

b. V.C.I.-Lite 

main harness 
A (for vehicles 
with CAN 
communication
)

c. V.C.I.-Lite 

main harness 
B (for vehicles 
without CAN 
communication
)

d. V.C.I.-Lite USB 

cable short

e. V.C.I.-Lite USB 

cable long

M.U.T.-III diagnosis code display, 
service data display

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

a

b

c

d

e

f

DO NOT USE

REVERSING SENSOR (CORNER SENSOR AND BACK SENSOR)

CHASSIS ELECTRICAL

54A-178

MB991955

a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826

M.U.T.-III 
sub-assembly

a. Vehicle 

communication 
interface 
(V.C.I.)

b. M.U.T.-III USB 

cable

c. M.U.T.-III main 

harness A (for 
vehicles with 
CAN 
communication
)

d. M.U.T.-III main 

harness B (for 
vehicles 
without CAN 
communication
)

e. Measuring 

adapter 
harness

f. M.U.T.-III 

trigger harness

CAUTION

For vehicles with CAN 
communication, use M.U.T.-III 
main harness A to send the 
simulated vehicle speed. If you 
connect M.U.T.-III main harness B 
instead, CAN communication 
does not function correctly.
M.U.T.-III diagnosis code display, 
service data display

MB991223

a

d

c

b

DO NOT USE

BA

MB991223

a. MB991219
b. MB991220
c. MB991221
d. MB991222

Harness set

a. Check harness
b. LED harness
c. LED harness 

adapter

d. Probe

Continuity check and voltage 
measurement at harness wire or 
connector

a. For checking connector pin 

contact pressure

b. For checking power supply circuit
c. For checking power supply circuit
d. For connecting a locally sourced 

tester

Tool

Number

Name

Use

MB992006

REVERSING SENSOR (CORNER SENSOR AND BACK SENSOR)

CHASSIS ELECTRICAL

54A-179

TROUBLESHOOTING

STANDARD FLOW OF DIAGNOSTIC 
TROUBLESHOOTING

M1540700600154

Refer to GROUP 00 

− How to use Troubleshoot-

ing/Inspection Service Points 

− Contents of Trouble-

shooting.

DIAGNOSIS FUNCTION

M1540700500038

FAIL-SAFE FUNCTION

1. When the ultrasonic noise is received, the bass 

toned buzzer sound continuously. When the ultra-
sonic noise stops, the normal operation will be 
resumed immediately.

2. When the abnormality such as the open circuit of 

a sensor occurs, the sensor turns OFF and the 
high toned buzzer sounds for 5 seconds. When 
the normal signal is received, the normal state 
will be resumed.

3. When an abnormality occurs in the sensor, the 

reversing sensor indicator keeps flashing with 
0.8-second interval until the system returns to the 
normal condition. However, if the system is 
turned OFF by using the switch, the indicator 
stops its flashing.

DIAGNOSIS CODE CHART

M1544300700070

CAUTION

During diagnosis, a diagnosis code associated 
with other system may be set when the ignition 
switch is turned on with connector(s) discon-
nected. On completion, confirm all systems for 
diagnosis code(s). If diagnosis code(s) are set, 
erase them all.

Diagnosis code No.

Diagnosis item

Reference page

B253A

RR Corner sensor open and short

P.54A-180

B253B

RL Corner sensor open and short

B253C

RH Back sensor open and short

B253D

LH Back sensor open and short

U0141

*

ETACS CAN timeout

P.54A-181

U0155

*

Meter CAN timeout

P.54A-182

U1190

No receive fault detect signal

P.54A-183

NOTE: With the troubleshooting indicated with "

*

", 

the ON/OFF switch indicator or buzzer sound will not 
be activated.

MB992006

Extra fine probe

Continuity check and voltage 
measurement at harness wire or 
connector

Tool

Number

Name

Use

REVERSING SENSOR (CORNER SENSOR AND BACK SENSOR)

CHASSIS ELECTRICAL

54A-180

DIAGNOSIS CODE PROCEDURES

Code No. B253A RR Corner sensor open and short

 

Code No. B253B RL Corner sensor open and short

 

Code No. B253C RR Back sensor open and short

 

Code No. B253D RL Back sensor open and short

CAUTION

• Before replacing the ECU or sensor, ensure 

that the power supply circuit, the earth circuit 
and the communication circuit are normal.

• When the illuminated licence plate is 

installed, the sensors may not operate 
because of noise from the plate. (When the 
ultrasonic noise is received, the bass toned 
buzzer sound continuously. When the ultra-
sonic noise stops, the normal operation will 
be resumed immediately.)

DIAGNOSTIC FUNCTION

• During the transmission/reception operation of 

each sensor, when the corner sensor/back sen-
sor-ECU detects an open circuit abnormality or 
short circuit between the sensor and corner sen-
sor/back sensor-ECU, or when there is an error 
with the corner sensor/back sensor-ECU internal 
monitor, the ECU sets one of the diagnosis codes 
No. B253A, No. B253B, No. B253C, and No. 
B253D.

TROUBLESHOOTING HINT

• Damaged harness wires and connectors

• Sensor malfunction

• Malfunction of corner sensor/back sensor-ECU

• Internal monitor error of corner sensor/back sen-

sor-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the following wiring harness.

• Check of open circuit, short to power supply, 

short to earth circuit in SRR, SGN4 line between 
rear corner sensor (RH) connector and corner 
sensor/back sensor-ECU.

• Check of open circuit, short to power supply, 

short to earth circuit in SRL, SGN3 line between 
rear corner sensor (LH) connector and corner 
sensor/back sensor-ECU.

• Check of open circuit, short to power supply, 

short to earth circuit in SBRH, SGN1 line 
between back sensor (RH) connector and corner 
sensor/back sensor-ECU.

• Check of open circuit, short to power supply, 

short to earth circuit in SBLH, SGN2 line between 
back sensor (LH) connector and corner sen-
sor/back sensor-ECU.

Q: Are all the wiring harness wires in good condition?

YES : 

Go to Step 2.

NO : 

Repair the connector(s) or wiring harness.

STEP 2. Confirm which reversing sensor (corner 
sensor/back sensor) does not detect the 
obstacle.

Q: Which reversing sensor (corner sensor/back 

sensor) does not detect the obstacle?
Rear corner sensor (RH) : 

Go to Step 3.

Rear corner sensor (LH) : 

Go to Step 4.

Back sensor (RH) : 

Go to Step 5.

Back sensor (LH) : 

Go to Step 6.

STEP 3. Diagnosis code recheck
Temporarily replace the rear corner sensor (RH), and 
then check if the diagnosis code No. B253A is set.

Q: Is the diagnosis code set?

YES : 

Replace the corner sensor/back 

sensor-ECU.

NO : 

Replace the rear corner sensor (RH).