Mitsubishi Grandis. Manual — part 612
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-546
YES :
<MUT-III indications correspond to the
illustration> Go to Step 32 .
NO :
<MUT-III indications do not correspond to
the illustration> Go to Step 33 .
STEP 32. Resistance measurement at A-07 joint
connector (CAN1) and A-04 ASC-ECU connector.
NOTE: When checking A-07 joint connector (CAN1),
disassemble and check the engine compartment
relay box by referring to
.
CAUTION
A digital multimeter should be used. For details
refer to
CAUTION
The test wiring harness should be used. For
details refer to
(1) Disconnect the joint connector (CAN1) and the
ASC-ECU connector, and measure at the wiring
harness side.
(2) Ignition switch: OFF (LOCK)
CAUTION
When measuring the resistance, disconnect the
negative battery terminal. For details refer to
(3) Ensure that the negative battery terminal is
disconnected.
(4) Continuity between A-07 joint connector (CAN1)
terminal No.2 and A-04 ASC-ECU connector
terminal No.15
OK: 2
Ω or less
(5) Continuity between A-07 joint connector (CAN1)
terminal No.5 and A-04 ASC-ECU connector
AC310398
AJ
Connector: A-04 <RHD>
A-04
Harness side
AC302572AD
Connector: A-07
Harness side
AC312553
Harness side: A-07
Test
harness
Test
harness
Harness side: A-04
BU
AC312553
Harness side: A-07
Test
harness
Harness side: A-04
BV
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-547
terminal No.11
OK: 2
Ω or less
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Are the check results normal?
YES :
<All the resistances measure 2
Ω or less>
Power supply to the ASC-ECU may be
suspected. Diagnose the ASC system.
Refer to
NO :
<Either or all of the resistances measure
more than 2
Ω> Repair the wiring harness
between the joint connector (CAN1) and the
ASC-ECU connector.
STEP 33. Connector check: C-09 joint connector
(CAN2)
CAUTION
The strand end of the twist wire should be within
10 cm from the connector. For details refer to
When checking the joint connector, ensure that its
wiring harness side is not damaged.
Q: Is the check result normal?
YES :
Go to Step 34 .
NO :
Repair a defective connector or replace the
joint connector.
STEP 34. Connector check: C-125 intermediate
connector
CAUTION
The strand end of the twist wire should be within
10 cm from the connector. For details refer to
Q: Is the check result normal?
YES :
Go to Step 35 .
NO :
Repair the defective connector.
AC310628AY
Connector: C-09 <RHD>
C-09 (GR)
Harness side
AC209350
1
12
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20
10
21
11
22
AC
Short pin
AC310628AB
Connector: C-125 <RHD>
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-548
STEP 35. Resistance measurement at C-125
intermediate connector and A-07 joint connector
(CAN1).
NOTE: When checking A-07 joint connector (CAN1),
disassemble and check the engine compartment
relay box by referring to
.
CAUTION
A digital multimeter should be used. For details
refer to
CAUTION
The test wiring harness should be used. For
details refer to
(1) Disconnect the joint connector (CAN1) and the
intermediate connector, and measure at the
wiring harness side.
(2) Ignition switch: OFF (LOCK)
CAUTION
When measuring the resistance, disconnect the
negative battery terminal. For details refer to
(3) Ensure that the negative battery terminal is
disconnected.
(4) Continuity between C-125 intermediate
connector terminal No.26 and A-07 joint
connector (CAN1) terminal No.4
OK: 2
Ω or less
(5) Continuity between C-125 intermediate
connector terminal No.27 and A-07 joint
AC302572AD
Connector: A-07
Harness side
AC310628AB
Connector: C-125 <RHD>
AC312553 AU
Male side: C-125
Test harness
Harness side: A-07
Test
harness
AC312553
Male side: C-125
Test harness
AV
Harness side: A-07
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-549
connector (CAN1) terminal No.1
OK: 2
Ω or less
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Are the check results normal?
YES :
<All the voltages measure 2
Ω or less> Go
to Step 36 .
NO :
<Either or all of the resistances measure
more than 2
Ω> Repair the wiring harness
between joint connector (CAN1) and the
intermediate connector.
STEP 36. Resistance measurement at C-125
intermediate connector and C-09 joint connector
(CAN2).
CAUTION
A digital multimeter should be used. For details
refer to
CAUTION
The test wiring harness should be used. For
details refer to
(1) Disconnect the joint connector (CAN2) and the
intermediate connector, and measure at the
wiring harness side.
(2) Ignition switch: OFF (LOCK)
CAUTION
When measuring the resistance, disconnect the
negative battery terminal. For details refer to
(3) Ensure that the negative battery terminal is
disconnected.
(4) Continuity between C-125 intermediate
connector terminal No.26 and C-09 joint
AC310628AY
Connector: C-09 <RHD>
C-09 (GR)
Harness side
AC310628AB
Connector: C-125 <RHD>
AC312553
AC312553 AN
Harness side: C-09
Test
harness
Female side: C-125
Test harness
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