Mitsubishi L200. Manual - part 823

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-51

STEP 7. Check CAN line between joint connector 
(CAN1) and the ETACS-ECU. Resistance 
measurement at C-119 joint connector (CAN1).

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)

(1) Disconnect joint connector (CAN1), and measure 

at the wiring harness side.

CAUTION

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

P.54C-7

.

(2) Ensure that the negative battery terminal is 

disconnected.

AC209364

AC209364TY

Harness side: C-119

Test harness

(3) Resistance between C-119 joint connector 

(CAN1) terminal No.9 (CAN_H) and body earth

OK: 1 k

Ω or more

AC209364

AC209364TZ

Test harness

Harness side: C-119

(4) Resistance between C-119 joint connector 

(CAN1) terminal No.20 (CAN_L) and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54C-7

.

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Go to Step 8.

NO : 

<Less than 1 k

Ω > Repair the wiring 

harness between joint connector (CAN1) 
and the ETACS-ECU connector.

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-52

STEP 8. Check the CAN line between joint 
connector (CAN1) and the RV meter. Resistance 
measurement at C-119 joint connector (CAN1).

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)

(1) Disconnect joint connector (CAN1), and measure 

at the wiring harness side.

CAUTION

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

P.54C-7

.

(2) Ensure that the negative battery terminal is 

disconnected.

AC209364

AC209364UC

Harness side: C-119

Test harness

(3) Resistance between C-119 joint connector 

(CAN1) terminal No.7 (CAN_H) and body earth

OK: 1 k

Ω or more

AC209364

AC209364UD

Test harness

Harness side: C-119

(4) Resistance between C-119 joint connector 

(CAN1) terminal No.18 (CAN_L) and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54C-7

.

Q: Is the check result normal?

YES <vehicles without ABS, ASTC and A/C> : 

<1 

k

Ω or more> Go to Step 22.

YES <vehicles with ABS> : 

<1 k

Ω or more> Go to 

Step 10.

YES <vehicles with ABS> : 

<1 k

Ω or more> Go to 

Step 13.

YES <vehicles without ABS and ASTC, and with A/
C> : 

<1 k

Ω or more> Go to Step 20.

NO  : 

<Less than 1 k

Ω > Go to Step 9.

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-53

STEP 9. M.U.T.-III CAN bus diagnostics [RV meter 
connector disconnected]

AC903856

Connector: C-171 <LHD>

AY

Harness side

C-171 (GR)

AC903868

Connector: C-171 <RHD>

BQ

Harness side

C-171 (GR)

(1) Disconnect RV meter connector C-171, and 

diagnose by using the M.U.T.-III.

AC507661

: Red section on screen

AB

ETACS

DISPLAY

ABS/ASC

SAS

YR/G

A/C

IMMOBI

AT

ENGINE

J/C (2)

J/C (1)

M.U.T.

(2) Diagnose CAN bus lines, and check if M.U.T.-III 

screen is as shown in the illustration.

Q: Does M.U.T.-III screen correspond to the 

illustration?
YES : 

Repair the wiring harness between joint 

connector (CAN1) and the RV meter 
connector.

NO : 

Check the RV meter connector, and repair if 
necessary. If the RV meter connector is in 
good condition, repair the RV meter power 
supply circuit. (Refer to GROUP 54A 

− RV 

meter .)

STEP 10. Check the CAN line between joint 
connector (CAN1) and the ABS-ECU. Resistance 
measurement at C-119 joint connector (CAN1).

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)

(1) Disconnect joint connector (CAN1), and measure 

at the wiring harness side.

CAUTION

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

P.54C-7

.

(2) Ensure that the negative battery terminal is 

disconnected.

AC209364

AC209364UE

Harness side: C-119

Test 
harness

(3) Resistance between C-119 joint connector 

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54C-54

(CAN1) terminal No.5 (CAN_H) and body earth

OK: 1 k

Ω or more

AC209364

AC209364UF

Test 
harness

Harness side: C-119

(4) Resistance between C-119 joint connector 

(CAN1) terminal No.16 (CAN_L) and body earth

OK: 1 k

Ω or more

CAUTION

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

P.54C-7

.

Q: Is the check result normal?

YES <vehicles without A/C> : 

<1 k

Ω or more> Go 

to Step 22.

YES <vehicles with A/C> : 

<1 k

Ω or more> Go to 

Step 20.

NO  : 

<Less than 1 k

Ω > Go to Step 11.

STEP 11. M.U.T.-III CAN bus diagnostics [ABS-
ECU connector disconnected]

AC903897

Connector: A-01

AN

A-01 (GR)

Harness side

(1) Disconnect ABS-ECU connector A-01, and 

diagnose by using the M.U.T.-III.

ACA01247

: Red section on screen

AB

ETACS

DISPLAY

ABS/ASC

SAS

YR/G

A/C

AT

ENGINE

JC

JC

M.U.T.

(2) Diagnose CAN bus lines, and check if M.U.T.-III 

screen is as shown in the illustration.

Q: Does M.U.T.-III screen correspond to the 

illustration?
YES : 

Check intermediate connector (C-13), and 

repair if necessary. If the intermediate 
connector is in good condition, repair the 
wiring harness between joint connector 
(CAN1) and the ABS-ECU connector.

NO : 

Check the ABS-ECU connector, and repair 
if necessary. If the ABS-ECU connector is in 
good condition, go to Step 12.

STEP 12. M.U.T.-III CAN bus diagnostics (retest 
the system)
Diagnose CAN bus lines, and check if M.U.T.-III 
screen shows normal state.

Q: Is the check result normal?

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 ).

NO : 

Check the ABS-ECU connector, and repair 
if necessary. If the ABS-ECU connector is in 
good condition, replace the hydraulic unit 
assembly.