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