Mitsubishi Evolution X. Manual - part 1006

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-385

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC B2226: AND error

CAUTION

• If DTC B2226 is set, be sure to diagnose the 

CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal. (Check 
that the voltage is 10 V or more.)

.

TROUBLE JUDGMENT

When the CAN box unit receives the signal to indi-
cate an abnormality (service data) occurred in the 
multivision display, the CAN box unit sets DTC 
B2226.

.

TROUBLESHOOTING HINT

• The CAN box unit may be defective

• The multivision display may be defective

DIAGNOSIS

Required Special Tools:

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

• MB991824: Vehicles 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.

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.54A-382

."

(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-14

).

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-386

STEP 2.Check that the of the MMCS service mode.
Check that the FACTOR CODE is set to the service data log in 
the MMCS service mode "Versions Log Information." (Refer to 

P.54A-369

.)

Q: Is the FACTOR CODE set?

YES : Carry out the diagnosis for the corresponding 

code.(Refer to Trouble symptom chart 

P.54A-408

)

NO :  Go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the CAN box unit.
(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 : Go to Step 4.
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

).

STEP 4. Recheck for diagnostic trouble code.
Temporarily replace the multivision display, and check if the 
DTC is set to the CAN box unit.
(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 the CAN box unit.
NO :  Replace the multivision display.

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-387

DTC B2240: Communication error with CAN Box

CAUTION

• If DTC B2240 is set, be sure to diagnose the CAN bus line.
• When replacing the ECU, always check that the communication circuit is normal. (Check that the 

voltage is 10 V or more.)

.

TROUBLE JUDGMENT

When the abnormality occurs in the transmis-
sion/reception data between the CAN box unit and 
multivision display, the CAN box unit sets DTC 
B2240.

.

PROBABLE CAUSES

• multivision display may be malfunction

• CAN box unit may be malfunction

• Damaged wiring harness and connectors

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• 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)

CAN Box Unit Communication Circuit

CAN BOX UNIT

MULTIVISION DISPLAY

AC708951BQ

Connectors: C-10, C-15

C-10 (GR)

C-15

MMCS

TSB Revision

CHASSIS ELECTRICAL

54A-388

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.54A-382

."

(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-14

).

STEP 2. Perform "Network/Connect Line Check" of the 
MMCS service mode.
Perform "Network/Connect Line Check" of the MMCS service 
mode, and check that the communication between the CAN 
box unit and the multivision display is normal. (Refer to 

P.54A-369

.)

NOTE: The communication is not possible, "CAN BOX" is not 
displayed.
Q: Is "CAN BOX OK" displayed?

YES : Go to Step 5.
NO :  Go to Step 3.

STEP 3. Check CAN box unit connector C-15 and 
multivision display connector C-10 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are CAN box unit connector C-15 and multivision 

display connector C-10 in good condition?
YES : Go to Step 4.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. The steering remote control switch should 

work normally.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB