Mitsubishi Lancer (4A9 engine). Manual - part 94

COMBINATION METER

CHASSIS ELECTRICAL

54A-38

Code No.B2463 Rheostat switch seizure

TROUBLE JUDGMENT
If the combination meter detects the rheostat switch 
pressed state for 60 seconds or more continuously, 
the diagnosis code No. B2463 is stored.

PROBABLE CAUSES

• Malfunction of combination meter

• Malfunction of meter hood assembly (rheostat 

switch knob)

DIAGNOSIS PROCEDURE

STEP 1. Rheostat switch check
Check whether an abnormality is present to the com-
bination meter and the rheostat switch knob attached 
to the meter hood assembly.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the combination meter or meter 
hood assembly, and then go to Step 2.

STEP 2. M.U.T.-III diagnosis code
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Replace the combination meter, and then 

go to Step 3.

NO : 

The diagnosis is complete.

STEP 3. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Go to Step 1.

NO : 

The diagnosis is complete.

COMBINATION METER

CHASSIS ELECTRICAL

54A-39

Code No.B2464 Meter information switch seizure

CAUTION

Whenever the ECU is replaced, ensure that the communication circuit is normal.

TROUBLE JUDGEMENT
If the combination meter detects the meter informa-
tion switch pressed state for 60 seconds or more 
continuously, the diagnosis code No. B2464 is 
stored.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Malfunction of meter information switch

• Malfunction of combination meter

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-37 meter 
information switch connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the connector.

STEP 2. Meter information switch check
Check the meter information switch. Refer to .

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the meter information switch.

STEP 3. Resistance measurement at the C-37 
meter information switch connector
(1) Disconnect the meter information switch 

connector, and then measure at the wiring 
harness side.

(2) Measure the resistance from C-37 meter 

Meter Information Switch Circuit

INTERFACE
CIRCUIT

COMBINATION
METER

CPU

METER
INFORMATION
SWITCH

Wire colour code 
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue 
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

AC701093 BB

Connectors: C-01, C-37 <LHD>

C-01

C-37

AC701122 BQ

Connectors: C-01, C-37 <RHD>

C-01

C-37

COMBINATION METER

CHASSIS ELECTRICAL

54A-40

information switch connector terminal No. 4 to 
body earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check the wiring harness between the C-
37 meter information switch connector terminal 
No. 4 and the body earth.
Check the earth wires for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 5. Connector check: C-01 combination 
meter connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector.

STEP 6. Check the wiring harness between the C-
01 combination meter connector terminal No. 3 
and the C-37 meter information switch terminal 
No. 1.
Check the output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

STEP 7. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Go to Step 1.

NO : 

The diagnosis is complete.

Code No.B2465 Ignition switch signal error

TROUBLE JUDGMENT
If 5 seconds or more elapses with the ignition switch 
state and the data from the CAN communication con-
tradicted, the combination meter stores the diagnosis 
code No. B2465.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the ETACS-ECU

• Malfunction of combination meter

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code
Check again if the diagnosis code is set to the 
ETACS-ECU.

Q: Is the diagnosis code set?

YES : 

Troubleshoot the ETACS-ECU. Refer to 

ETACS-ECU 

− Diagnosis code chart .

NO : 

Go to Step 2.

STEP 2. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ).

STEP 3. Combination meter operation check
Check that the combination meter works normally.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Check the power supply circuit of 
combination meter. Refer to .

STEP 4. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the combi-
nation meter.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check again if the diagnosis code is set to the 

combination meter.

Q: Is the diagnosis code set?

COMBINATION METER

CHASSIS ELECTRICAL

54A-41

YES : 

Replace the combination meter.

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 ).

Code No.U0019 Bus off (CAN-B)

CAUTION

• If diagnosis code No. U0019 is set, be sure to 

diagnose the CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal.

DIAGNOSTIC FUNCTION
If the CAN-B circuit malfunction occurs, the combina-
tion meter sets the diagnosis code No. U0019.

JUDGMENT CRITERIA
With the ignition switch at the ON position and the 
system voltage at 10 

− 16 V (data from ETACS-

ECU), if the combination meter becomes unable to 
transmit data normally due to the CAN-B bus circuit 
malfunction, the combination meter determines that 
a problem has occurred.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the combination meter

• Malfunction of wiring harness or connector

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use the 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 ).

STEP 2. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the KOS-
ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Replace combination meter.

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 ).

Code No.U0100 Engine CAN timeout

CAUTION

• If the diagnosis code No. U0100 is set, be sure 

to diagnose the CAN bus line.

• When replacing the ECU, always check that 

the communication circuit is normal.

DIAGNOSTIC FUNCTION
The combination meter sets diagnosis code 
No.U0100 when it cannot receive signals from the 
engine ECU.

JUDGEMENT CRITERIA
With the statuses that the ignition switch is at ON 
position, system voltage is 10

−16 V (data from 

ETACS-ECU), and there is no malfunction to the 
power supply fuse (IOD fuse), or odometer value is 
80.5 km or more, if the communication with engine 
ECU cannot be established for 600 ms or more, the 
combination meter determines that a problem has 
occurred.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of engine ECU

• Malfunction of combination meter