Mitsubishi Outlander XL. Manual - part 827

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)

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

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III) P.42C-7."

(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 54D,

Diagnosis P.54D-17).

STEP 2. Check the power supply circuit and the ground
circuit to WCM.
Refer  to  INSPECTION  PROCEDURE  4  "Check  WCM  Power
Supply/Ground Circuits" P.42C-71.

Q:Is the power supply circuit and the ground circuit to WCM

in good condition ?

YES:

 Go to Step 3.

NO:

 Repair the power supply circuit and the ground

circuit to WCM.

STEP 3. Retest the system
Check if scan tool can communicate with WCM.

Q:Does  the  scan  tool  cannot  communicate  with  WCM  in

good condition?

YES:

 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).

NO:

 Replace WCM and register the ID codes. (Refer to P.

42C-8.)

WIRELESS CONTROL MODULE (WCM)

42C-67

DIAGNOSIS

Inspection Procedure 2: The ignition key cannot be registered using scan tool.

M14209200036USA0000010000

TECHNICAL DESCRIPTION (COMMENT)
If only some ignition keys cannot be registered, the
ignition key itself may be faulty. If no ignition key can
be  registered,  the  key  assembly  may  have  already
been registered for another vehicle, or the WCM may
be faulty.

TROUBLESHOOTING HINTS

｠

Malfunction of the ignition key

｠

Damaged wiring harness and connectors

｠

Malfunction of WCM

｠

Ignition key registered for other vehicle

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)

STEP 1. Check the ignition key inserted in the key cylinder
for interference.

Q:Are there other ignition keys or anything that interferes

with  the  communication  (things  that  generate  radio

waves such as magnets and an air-cleaning device that

has a power plug) near the ignition key inserted in the key

cylinder?

YES:

 Move away or remove other ignition keys or things

that interfere with the communication (things that
generate radio waves such as magnets and a air-cleaning
device that has a power plug) near the ignition key. Then,
go to step 2.

NO:

 Go to Step 3.

STEP 2. Retest the system
Check that the ignition key can be registered.

Q:Is the ignition key that cannot be registered using scan

tool in good condition?

YES:

 The procedure is complete.

NO:

 Go to Step 3.

STEP 3. Check which ignition key cannot be registered.

Q:Can any one of the ignition keys be registered?

YES (Only some keys):

 Replace the key that cannot be

registered and register the ID codes. (Refer to P.42C-8.
After registering the ID codes, go to Step 5.

NO (All keys):

 Go to Step 4.

STEP 4. Retest the system
Check the scan tool screen when the key was not able to be
registered.

42C-68

WIRELESS CONTROL MODULE (WCM)

DIAGNOSIS

Q:Is the error message of scan tool screen "Abnormality in

key" ?

YES (Abnormality in key):

 Carry out DTC B1A25:

Transponder ID unmatched and DTC B1A35: Transponder read
error. Refer to P.42C-20B1A25, P.42C-23B1A35. Then, go to
Step 5.

NO (ECU internal error):

 Replace WCM and register the ID

codes. (Refer to P.42C-8. After registering the ID codes,
go to Step 5.

STEP 5. Retest the system
Check that the ignition key can be registered.

Q:Is the ignition key cannot be registered using scan tool

in good condition?

YES:

 The procedure is complete.

NO:

 Replace WCM and register the ID codes. (Refer to P.

42C-8.)

Inspection Procedure 3: Engine does not start.

M14209200037USA0000010000

TECHNICAL DESCRIPTION (COMMENT)
If the fuel injection does not work, WCM and the MFI
system  may  have  a  problem.  This  symptom  is  not
considered abnormal when the engine is started by an
ignition key that has not been registered.

TROUBLESHOOTING HINTS

｠

Malfunction of the MFI system

｠

Malfunction of WCM

｠

Malfunction of CAN bus line

｠

Malfunction of the transponder

｠

VIN not programmed

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)

STEP 1. Check the battery voltage.
Measure the battery voltage when cranking.

｠

The voltage should measure 8 volt or more.

Q:Is the measured voltage 8 volt or more?

YES:

 Go to Step 2.

NO:

 Check the battery. (Refer to GROUP 54Aa - Battery

test P.54Aa-3.)

WIRELESS CONTROL MODULE (WCM)

42C-69

DIAGNOSIS

STEP 2. Using scan tool MB991958, diagnose the CAN bus
line.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III) P.42C-7."

(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 3.

NO:

 Repair the CAN bus line. (Refer to GROUP 54D,

Diagnosis P.54D-17).

STEP 3. Using scan tool MB991958, read the MFI system
diagnostic trouble code.
Check if DTC is set to the engine control module.

Q:Is the DTC set?

YES:

 Troubleshoot the MFI system. (Refer to GROUP 13Ab,

Diagnosis P.13Ab-44.)

NO:

 Go to Step 4.

STEP 4. Using scan tool MB991958, read the WCM
diagnostic trouble code.
Check if DTC is set to the WCM.

Q:Is the DTC set?

YES:

 Troubleshoot the WCM. (Refer to P.42C-11.)

NO:

 Go to Step 5.

STEP 5. Check that the engine starts.

Q:Does the engine start?

YES:

 The procedure is complete.

NO:

 Refer to GROUP 13Ab, Diagnosis P.13Ab-44. When the

cause of the failure cannot be tracked down by the
troubleshooting in GROUP 13Ab, replace WCM and register
the ID codes. (Refer to P.42C-8.)

42C-70

WIRELESS CONTROL MODULE (WCM)

DIAGNOSIS