Mitsubishi Grandis. Manual — part 562
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-346
STEP 30. Resistance 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) 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) Resistance between A-07 joint connector (CAN1)
terminal Nos. 3 and 6
OK: 120
± 20 Ω
(5) Resistance between A-07 joint connector (CAN1)
terminal Nos. 2 and 5
OK: 1 k
Ω or more
Q: Are the check result normal?
AC302572AD
Connector: A-07
Harness side
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740DK
Harness side: A-07
Test
harness
Test
harness
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740DL
Harness side: A-07
Test
harness
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-347
YES <all of the measurement results are within the
normal value> :
Go to Step 40.
NO <The resistance between terminal Nos. 3 and 6
is less than 120
±20 Ω> :
Go to Step 32.
NO <The resistance between terminal Nos. 2 and 5
is less than 1 k
Ω> :
Go to Step 37.
STEP 31. 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 32.
NO :
Repair the defective connector.
STEP 32. Resistance 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 connector, and measure at its
male-side intermediate connector (at the control
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) Resistance between A-16 intermediate connector
terminal Nos. 6 and 12
OK: 120
± 20 Ω
Q: Is the check result normal?
YES :
<Within 120
± 20 Ω> Go to Step 36 .
NO :
<Not within 120
± 20 Ω> Go to Step 33 .
AC310403
AC
Connector: A-16 <LHD>
A-16 (B)
AC310403
AC
Connector: A-16 <LHD>
A-16 (B)
AC204740
AC204740
AC204740
AC204740DM
Male side: A-16
Test
harness
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-348
STEP 33. Connector check: C-112 engine-ECU
<M/T> or engine-A/T-ECU <A/T> 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 34.
NO :
Repair the defective connector.
STEP 34. Resistance 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) 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) Resistance between A-16 intermediate connector
terminal Nos. 6 and 12
OK: More than 2
Ω
CAUTION
Strictly observe the specified wiring harness
repair procedure. For details refer to
Q: Is the check result normal?
YES :
<More than 2
Ω> Go to Step 35.
NO :
<2
Ω or less> Repair the wiring harness
between the intermediate connector and the
engine-ECU <M/T> or engine-A/T-ECU
<A/T> connector.
AC310615
AS
Harness side
Connector: C-112 <LHD>
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
AC310403
AC
Connector: A-16 <LHD>
A-16 (B)
AC310615
AS
Harness side
Connector: C-112 <LHD>
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
AC204740
AC204740
AC204740
AC204740DM
Male side: A-16
Test
harness
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-349
STEP 35. Resistance measurement at C-112
engine-ECU <M/T> or engine-A/T-ECU <A/T>
connector.
CAUTION
A digital multimeter should be used. For details
refer to
(1) Remove the engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and measure at the
equipment side.
(2) Resistance at C-112 engine-ECU <M/T> or
engine-A/T-ECU <A/T> connector terminal Nos.
61 and 62
OK: 120
± 20 Ω
Q: Is the check result normal?
YES :
<Within 120
± 20 Ω> Follow diagnostic item
18, Diagnose CAN bus lines thoroughly.
Refer to
.
NO :
<Not within 120
± 20 Ω> Replace the
engine-ECU <M/T> or engine-A/T-ECU
<A/T>.
STEP 36. Resistance 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) 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
AC310615
AS
Harness side
Connector: C-112 <LHD>
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
AC312553
Equipment side: C-112
Test
harness
AC
Test
harness
AC302572AD
Connector: A-07
Harness side
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