Mitsubishi L200. Manual — part 834

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-95

STEP 2. Resistance measurement at C-119 joint
connector (CAN1) and C-171 RV meter
connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54C-7

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54C-7

.

AC903853

BM

Connector: C-119 <LHD>

C-119 (GR)

AC903868

CM

Connector: C-119 <RHD>

C-119 (GR)

AC903856

Connector: C-171 <LHD>

AY

Harness side

C-171 (GR)

AC903868

Connector: C-171 <RHD>

BQ

Harness side

C-171 (GR)

(1) Disconnect joint connector (CAN1) and the RV

meter connector, and measure at the wiring
harness side.

(2) Turn the ignition switch to the LOCK (OFF)

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54C-7

.

(3) Ensure that the negative battery terminal is

disconnected.

AC204740

AC204740

AC204740

Harness side: C-171

Harness side: C-119

LU

Test
harness

Test
harness

(4) Continuity between C-119 joint connector (CAN1)

terminal No.7 and C-171 RV meter connector

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-96

terminal No.7

OK: Continuity (2

Ω or less)

AC204740

AC204740

AC204740

Harness side: C-171

AC204740

AC204740

Harness side: C-119

LV

Test
harness

(5) Continuity between C-119 joint connector (CAN1)

terminal No.18 and C-171 RV meter connector
terminal No.21

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54C-7

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the RV meter may be
suspected. Diagnose the RV meter. Refer to
.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between joint connector (CAN1) and the RV
meter connector.

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-97

Diagnosis Item 7: Diagnose when the M.U.T.-III cannot receive the data sent by ABS-ECU <vehicles
with ABS> or ASTC-ECU <vehicles with ASTC>

CAUTION

When servicing a CAN bus line, earth yourself by touching a metal object such as an unpainted water
pipe. If you fail to do, a component connected to the CAN bus line may be broken.

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

A/T-ECU

DIAGNOSIS
CONNECTOR

ENGINE-ECU

STEERING
WHEEL
SENSOR

G AND
YAW RATE
SENSOR

A/C-ECU

ABS-ECU

ASTC-ECU

ETACS-ECU

RV METER

NOTE

:VEHICLES WITH ABS
:VEHICLES WITH ASTC
:VEHICLES WITH RV METER
:VEHICLES WITH AUTOMATIC-A/C
:LHD
:RHD
:A/T

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-98

FUNCTION
The diagnostic result demonstrates that "the M.U.T.-
III cannot receive the sent data from the ABS-ECU
<vehicles with ABS> or ASTC-ECU <vehicles with
ASTC>" when the M.U.T.-III checks the periodically

sent data from each ECU.