Mitsubishi Outlander GS45X. Manual — part 1136

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-123

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC U1412 reset?

YES : Start over at Step 1.
NO : The procedure is complete.

DTC U1415: Coding not completed/Data fail

CAUTION

• If the DTC U1415 is set, diagnose the CAN bus

lines.

• When replacing the ECU, always check that

the communication circuit is normal.

.

DIAGNOSTIC FUNCTION

If the vehicle information data is not registered to the
combination meter, the KOS-ECU sets the DTC
U1415.

.

JUDGMENT CRITERIA

With the global coding counter value "0," if all the glo-
bal coding data (vehicle information) are not stored,
the KOS-ECU determines that a problem has
occurred.

.

TROUBLESHOOTING HINTS

• The CAN bus line may be defective.

• The KOS-ECU may be defective.

• The ETACS-ECU may be defective.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-124

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.42B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Using scan tool MB991958, read the ETACS-ECU
diagnostic trouble code.
Check if a coding-related DTC is set to the ETACS-ECU.
Q: Is the DTC set?

YES : Troubleshoot the ETACS-ECU. Refer to

P.54A-733

.

NO : Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace KOS-ECU and register the ID codes. (Refer

to

P.42B-15

.)

NO : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to use

Troubleshooting/inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-15

).

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-125

Code No.U1417 Implausible coding data

CAUTION

• If diagnostic trouble code U1417 is set in KOS-ECU,

always diagnose the CAN bus lines. If there is any fault
in the CAN bus lines, an incorrect diagnostic trouble
code may be set. In this case, the set diagnostic trouble
code is not highly reliable.

• Before replacing the ECU, ensure that the communica-

tion circuit is normal.

• When the diagnostic trouble code U1417 is set in

KOS-ECU, the diagnostic trouble code may also be set
in ETACS-ECU. When the diagnostic trouble code is set
in ETACS-ECU, carry out the diagnosis of the diagnos-
tic trouble code for ETACS-ECU first.

.

CIRCUIT OPERATION

KOS-ECU receives the vehicle information stored in the
ETACS-ECU via CAN bus lines.

.

DTC SET CONDITIONS

KOS-ECU communicates with ETACS-ECU via CAN bus lines.
This diagnostic trouble code is set when the vehicle information
received from the ETACS-ECU is invalid.

.

PROBABLE CAUSES

• Malfunction of ETACS-ECU

• Engine control module malfunction

• ETACS-ECUs have been interchanged between two vehi-

cles.

• KOS-ECU malfunction

• External noise interference

• WCMs have been interchanged between two vehicles.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-126

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the

Scan Tool (M.U.T.-III)

P.42B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Using scan tool MB991958, read the other system
diagnostic trouble code.
Check if DTC is set to the ETACS-ECU or engine control mod-
ule.
Q: Is the DTC set?

YES (DTC is set to ETACS-ECU.) : Troubleshoot the

ETACS. (Refer to GROUP 54A, Diagnosis

P.54A-733

.)

YES (DTC is set to the engine control module.) :

Troubleshoot the MFI system. (Refer to GROUP 13A,
Diagnosis

P.13A-49

<2.4L Engine> or GROUP 13B,

Diagnosis

P.13B-50

<3.0L Engine>.)

NO : Go to Step 3.

STEP 3. Check part number of ETACS-ECU.
Check the part number of ETACS-ECU.

OK: 8637A213

Q: Is the check result normal?

YES : Go to Step 4.
NO : Replace ETACS-ECU.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector