Mitsubishi Outlander (2013+). Manual - part 556
TROUBLESHOOTING <OSS-ECU>
KEYLESS OPERATION SYSTEM (KOS)
42B-85
Inspection Procedure 6: Vehicle power cannot be turned OFF when the shift position is in "P." (Power
supply mode ON to ACC is possible)
CAUTION
Before replacing the ECU, ensure that the power
supply circuit, the earth circuit and the communi-
cation circuit are normal.
COMMENTS ON TROUBLE SYMPTOM
When the shift position is judged to be in the P posi-
tion based on the input of P range detection switch,
OSS-ECU can turn OFF the vehicle power supply. If
the vehicle power cannot be turned OFF (power sup-
ply mode ON to ACC is possible) when the shift is in
P position, the P range detection switch or OSS-ECU
may have a problem.
PROBABLE CAUSES
• Damaged wiring harness or connector (short to
earth in PDSW line)
• Malfunction of selector lever assembly (ON sei-
zure of P range detection switch)
• Malfunction of OSS-ECU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III diagnosis code
Check if the diagnosis code is set to OSS-ECU.
Q: Is the diagnosis code set?
YES :
Diagnose the OSS-ECU. Refer to
NO :
Go to Step 2.
STEP 2. Check of short to earth 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.
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.
Terminal
No.
Operation state
Normal
conditions
4
− 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 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 Outsi
de
park
Selector
lever:
Other than
P position
Park
Operate the selector lever.
OK: Operation state and data list display
agree with each other.
Q: Is the check result normal?
YES :
Intermittent malfunction is suspected (Refer
to GROUP 00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunction ).
NO :
Replace the OSS-ECU and register the
chassis number (Refer to
).