Mitsubishi Outlander (2013+). Manual - part 550

 

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Mitsubishi Outlander (2013+). Manual - part 550

 

 

TROUBLESHOOTING <OSS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-61

STEP 3. Check of short to power supply, short to 
earth, and open circuit in +B2 line between 
OSS-ECU connector and fusible link

NOTE: Before the wiring harness check, check the 
joint connector, ETACS-ECU connector, and repair if 
necessary.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector(s) or wiring harness.

STEP 4. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code set?

YES : 

Replace the OSS-ECU and register the 

chassis number (Refer to 

P.42B-93

).

NO : 

Intermittent malfunction is suspected (Refer 
to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1135 Engine switch

CAUTION

When replacing the ECU, always check that the 
communication circuit is normal.

DIAGNOSTIC FUNCTION

When an abnormality is detected for 3 seconds or 
more with either of the SW1 or SW2 of engine 
switch, OSS-ECU sets the diagnosis code 
No.B1135, and displays the power supply system 
error warning screen to the multi information display 
of the combination meter.

JUDGEMENT CRITERIA

Check Conditions

• After OSS-ECU activation

Judgment Criterion

• 3 seconds or more have elapsed since the 

unmatch between the SW1 and SW2 of engine 
switch is detected

PROBABLE CAUSES

• Engine switch malfunction (ON/OFF seizure of 

SW1 or SW2)

• Damaged wiring harness or connector (short to 

power supply, short to earth, or open circuit in 
SW1 or SW2 line)

• Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Engine switch check
Refer to 

P.42B-101

.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the engine switch.

STEP 2. M.U.T.-III data list
Check the OSS-ECU data list.

Operation 
state

Item No.

Check item

Displ
ay

When the 
engine 
switch is 
pressed

1

Engine switch(1)

ON

2

Engine switch(2)

ON

When the 
engine 
switch is 
not 
pressed

1

Engine switch(1)

OFF

2

Engine switch(2)

OFF

Operate the engine switch.

OK: Operation state and data list display 
agree with each other.

Q: Is the check result normal?

Normal conditions are displayed for all the items. : 

Go to Step 5.

Normal condition is not displayed for item No.1 : 

Go to Step 3.

Normal condition is not displayed for item No. 2. : 

Go to Step 4.

STEP 3. Check of short to power supply, short to 
earth, and open circuit in SW1 line between 
OSS-ECU connector and engine switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

TROUBLESHOOTING <OSS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-62

STEP 4. Check of short to power supply, short to 
earth, and open circuit in SW2 line between 
OSS-ECU connector and engine switch 
connector

NOTE: Because the conformity cannot be deter-
mined even when the digital tester is used to meas-
ure the voltage of SW2 line between the OSS-ECU 
connector and engine switch connector, be sure to 
use the oscilloscope. (Outputs the sawtooth wave-
form of 0 to 5 V with intervals of 10 ms.)

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

STEP 5. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code set?

YES : 

Replace the OSS-ECU and register the 

chassis number (Refer to 

P.42B-93

).

NO : 

Intermittent malfunction is suspected (Refer 
to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1136 Stop lamp switch

CAUTION

When replacing the ECU, always check that the 
communication circuit is normal.

DIAGNOSTIC FUNCTION

When an open circuit or short to earth is detected in 
the stop lamp switch circuit system, or when the 
actual stop lamp switch status is different from the 
stop lamp switch status received from the 
ETACS-ECU via CAN, the OSS-ECU sets diagnosis 
code No.B1136, and displays the power supply sys-
tem error warning on the multi information display of 
the combination meter.

JUDGEMENT CRITERIA

Check Conditions

• After OSS-ECU activation

Judgment Criterion

• When the following conditions are met:

The time when the OSS-ECU obtained the stop lamp 

switch status deviates 1.5 seconds from the time 
when the ETACS-ECU obtained it.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Damaged wiring harness or connector (STP line, 

STP1 line)

• ETACS-ECU malfunction

• Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 2

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ). On completion, go 

to Step 2.

STEP 2. Check of short to power supply, short of 
earth and open circuit in STP1 line between stop 
lamp switch connector and OSS-ECU connector

NOTE: Before the wiring harness check, check the 
intermediate connector, and repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 3

NO : 

Repair the connector(s) or wiring harness.

STEP 3. Check of short to power supply, short of 
earth and open circuit in STP line between stop 
lamp switch connector and ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4

NO : 

Repair the connector(s) or wiring harness.

STEP 4. M.U.T.-III other system data list
Check the ETACS-ECU data list.

• Item No.290: Stop lamp switch (Refer to GROUP 

54A 

− ETACS, Service Data Reference Table .)

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Diagnose the ETACS-ECU. (Refer to 
GROUP 54A 

− ETACS, Trouble Symptom 

Chart for Input Signal .)

TROUBLESHOOTING <OSS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-63

STEP 5. M.U.T.-III data list
Check the OSS-ECU data list.

Operation 
state

Item No.

Check item

Displ
ay

Brake 
pedal is 
depressed

3

Stop lamp switch

ON

Brake 
pedal 
released

OFF

Operate the brake pedal.

OK: Operation state and data list display 
agree with each other.

Q: Is the check result normal?

YES : 

Go to Step 6

NO : 

Replace the OSS-ECU and register the 
chassis number (Refer to 

P.42B-93

).

STEP 6. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code set?

YES : 

Replace the OSS-ECU and register the 

chassis number (Refer to 

P.42B-93

).

NO : 

Intermittent malfunction is suspected (Refer 
to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1137 P range detect SW

CAUTION

When replacing the ECU, always check that the 
communication circuit is normal.

DIAGNOSTIC FUNCTION

If an error is detected in the P range detection switch 
circuit system when the vehicle speed is 10 km/h or 
more, OSS-ECU sets the diagnosis code No.B1137, 
and displays the immobiliser certification system 
inspection warning screen to the multi information 
display of the combination meter.

JUDGEMENT CRITERIA

Check Conditions

• Power supply mode: ON

Judgment Criterion

• When the vehicle speed is 10 km/h or more, 1 

second or more has elapsed since the P range 
detection switch is detected to be OFF (selector 
lever is in P position).

• When the P range detection switch is OFF, the 

signal other than selector lever P position is 
received for 2 seconds or more.

PROBABLE CAUSES

• Damaged wiring harness or connector (short to 

power supply or open circuit in PDSW line)

• Selector lever assembly malfunction (OFF sei-

zure of P range detection switch)

• Malfunction of the ABS-ECU or the ASC-ECU

• Malfunction of the CVT-ECU

• Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code
Check the diagnosis code of ABS-ECU or ASC-ECU 
and CVT-ECU.

Q: Is the diagnosis code set?

YES <Set in ABS-ECU or ASC-ECU> : 

Troubleshoot the ABS-ECU or ASC-ECU. 
(Refer to GROUP 35B 

− Troubleshooting  

<ABS> or GROUP 35C 

− Troubleshooting  

<ASC>.)

YES <Set in CVT-ECU> : 

Troubleshoot the 

CVT-ECU. (Refer to GROUP 23A 

− 

Troubleshooting .)

NO  : 

Go to Step 2

STEP 2. Check of short to power supply, short to 
earth and open circuit in PDSW line between 
selector lever assembly connector and OSS-ECU 
connector

NOTE: Because the conformity cannot be deter-
mined even when the digital tester is used to meas-
ure the voltage of PDSW line between the selector 
lever assembly connector and OSS-ECU connector, 
be sure to use the oscilloscope. (Outputs the saw 
tooth waveform of 0 to 5 V with intervals of 10 ms.)

Q: Is the check result normal?

YES : 

Go to Step 3

NO : 

Repair the connector(s) or wiring harness.

TROUBLESHOOTING <OSS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-64

STEP 3. Check of selector lever assembly (P 
range detection switch)
Disconnect the selector lever assembly connector, 
and check the continuity at the equipment side.

Item No.

Check item

Normal 
value

− 6

Selector lever: P 
position

No continuity

Selector lever: Other 
than P position

Continuity 
exists (2 

Ω or 

less)

Q: Is the check result normal?

YES : 

Go to Step 4

NO : 

Replace the selector lever assembly.

STEP 4. M.U.T.-III other system data list
Check the OSS-ECU data list.

Operation 
state

Item No.

Check item

Displ
ay

Selector 
lever: P 
position

8

P range detect SW Park 

positi
on

Selector 
lever: 
Other than 
P position

Other 
than 
Park 
positi
on

Operate the selector lever.

OK: Operation state and data list display 
agree with each other.

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Replace the OSS-ECU and register the 
chassis number (Refer to 

P.42B-93

).

STEP 5. Check whether the diagnosis code is 
reset.

Q: Is the diagnosis code set?

YES : 

Replace the OSS-ECU and register the 

chassis number (Refer to 

P.42B-93

).

NO : 

Intermittent malfunction is suspected (Refer 
to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

Code No.B1139 KOS authentification timeout

DIAGNOSTIC FUNCTION

If the necessary data cannot be received from 
KOS-ECU via CAN during the certification communi-
cation with KOS-ECU, OSS-ECU sets the diagnosis 
code No.B1139, and displays the immobilizer certifi-
cation system inspection warning screen to the multi 
information display of the combination meter.

JUDGEMENT CRITERIA

Check Conditions

• At KOS-ECU certification

Judgment Criterion

• During the certification communication with 

KOS-ECU, the necessary data cannot be 
received from KOS-ECU via CAN.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of KOS-ECU

• Malfunction of OSS-ECU

DIAGNOSIS PROCEDURE

1. M.U.T.-III CAN bus diagnosis (after turning the 

forced power supply output to "IG-ON" using the 
M.U.T.-III)

2. KOS diagnosis code check (after turning the 

forced power supply output to "IG-ON" using the 
M.U.T.-III)

3. OSS-ECU diagnosis code recheck

 

 

 

 

 

 

 

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