Mitsubishi Grandis. Manual — part 514
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-154
STEP 23. Voltage measurement at the 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 connector, and measure at the
wiring harness side.
(2) Connect the negative battery terminal, and turn
the ignition switch to the ON position.
(3) Voltage between A-07 joint connector (CAN1)
terminal No.3 and body earth
OK: 4.0 V or less
(4) Voltage between A-07 joint connector (CAN1)
terminal No.2 and body earth
OK: 4.0 V or less
(5) Disconnect the negative battery terminal.
Q: Are the check result normal?
YES <all of the measurement results show 4.0 V or
less> :
Go to Step 29 .
NO <The voltage between terminal No.3 and body
earth is more than 4.0 V> :
Go to Step 24 .
NO <The voltage between terminal No.2 and body
earth is more than 4.0 V> :
Go to Step 27 .
STEP 24. Connector check: A-16 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 25 .
NO :
Repair the defective connector.
AC302572AD
Connector: A-07
Harness side
AC209365JY
Harness side: A-07
Test
harness
AC209365JZ
Harness side: A-07
Test
harness
AC310398
AC
Connector: A-16 <RHD>
A-16 (B)
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-155
STEP 25. Voltage measurement at the 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) Connect the negative battery terminal, and turn
the ignition switch to the ON position.
(3) Voltage between A-07 joint connector (CAN1)
terminal No.3 and body earth
OK: 1.0 V or less
(4) Disconnect the negative battery terminal.
Q: Is the check result normal?
YES :
<1.0 V or less> Go to Step 26.
NO :
<more than 1.0 V> Repair the wiring
harness between the joint connector
(CAN1) and the intermediate connector.
STEP 26. Voltage measurement at the A-16
intermediate connector.
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 engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector and the
intermediate connector, and measure at the
wiring harness side.
(2) Connect the negative battery terminal, and turn
the ignition switch to the ON position.
(3) Voltage between A-16 intermediate connector
AC302572AD
Connector: A-07
Harness side
AC310398
AC
Connector: A-16 <RHD>
A-16 (B)
AC209365JY
Harness side: A-07
Test
harness
AC310398
AC
Connector: A-16 <RHD>
A-16 (B)
AC310628AW
Harness side
Connector: C-112 <RHD>
C-112 (GR)
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
AC209365KA
Male side: A-16
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-156
terminal No.12 and body earth
OK: Less than 1.0 V
(4) Disconnect the negative battery terminal.
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Is the check result normal?
YES :
<less than 1.0 V> Follow diagnostic item 20
"Diagnose CAN bus lines thoroughly." Refer
to
NO :
<1.0 V or more> Repair the wiring harness
between the intermediate connector and the
engine-ECU <M/T> or engine-A/T-ECU
<A/T> connector.
STEP 27. Connector check: A-04 ASC-ECU
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 28 .
NO :
Repair the defective connector.
STEP 28. Voltage measurement at the 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
ASC-ECU connector, and measure at the wiring
harness side.
(2) Connect the negative battery terminal, and turn
the ignition switch to the ON position.
(3) Voltage between A-07 joint connector (CAN1)
AC310398
AJ
Connector: A-04 <RHD>
A-04
Harness side
AC302572AD
Connector: A-07
Harness side
AC310398
AJ
Connector: A-04 <RHD>
A-04
Harness side
AC209365JZ
Harness side: A-07
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-157
terminal No.2 and body earth
OK: Less than 1.0 V
(4) Disconnect the negative battery terminal.
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Is the check result normal?
YES :
<less than 1.0 V> Follow diagnostic item 20
"Diagnose CAN bus lines thoroughly." Refer
to
NO :
<1.0 V or more> Repair the wiring harness
between the joint connector (CAN1) and the
ASC-ECU connector.
STEP 29. Voltage measurement at the 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) Connect the negative battery terminal, and turn
the ignition switch to the ON position.
(3) Voltage between A-07 joint connector (CAN1)
terminal No.1 and body earth
OK: Less than 1.0 V
(4) Disconnect the negative battery terminal.
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Is the check result normal?
YES :
<less than 1.0 V> Follow diagnostic item 20
"Diagnose CAN bus lines thoroughly." Refer
to
.
NO :
<1.0 V or more> Repair the wiring harness
between the joint connector (CAN1) and the
intermediate connector.
STEP 30. 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 31 .
NO :
Repair the defective connector.
AC302572AD
Connector: A-07
Harness side
AC310628AB
Connector: C-125 <RHD>
AC209365KB
Harness side: A-07
Test
harness
AC310628AB
Connector: C-125 <RHD>
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