Mitsubishi Grandis. Manual — part 553
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-310
STEP 7. Resistance measurement at C-02
combination meter connector.
CAUTION
A digital multimeter should be used. For details
refer to
(1) Remove the combination meter, and measure at
the equipment side.
(2) Resistance between C-02 combination meter
connector terminal Nos. 23 and 24
OK: 120
± 20 Ω
Q: Is the check result normal?
YES :
<Within 120
± 20 Ω> Follow diagnostic item
17, Diagnose CAN bus lines thoroughly.
Refer to
NO :
<Not within 120
± 20 Ω> Replace the
combination meter.
STEP 8. Connector check: C-106 A/C-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 9.
NO :
Repair the defective connector.
STEP 9. Resistance measurement at 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
A/C-ECU connector, and measure at the wiring
AC310613
BB
Connector: C-02 <LHD>
Harness side
AC204740
AC204740
AC204740
AC204740DS
Equipment side: C-02
Test
harness
AC310613
AB
Connector: C-106 <LHD>
Harness side
AC310615
AU
Harness side
Connector: C-09 <LHD>
C-09 (GR)
AC310613
AB
Connector: C-106 <LHD>
Harness side
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-311
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-09 joint connector (CAN2)
terminal Nos. 2 and 13
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 10.
NO :
<2
Ω or less> Repair the wiring harness
between joint connector (CAN2) and the
A/C-ECU connector.
STEP 10. Resistance measurement at C-106
A/C-ECU connector.
CAUTION
A digital multimeter should be used. For details
refer to
.
(1) Remove the A/C-ECU, and measure at the
equipment side.
(2) Resistance between C-106 A/C-ECU connector
terminal Nos. 8 and 9
OK: 1 k
Ω or more
Q: Is the check result normal?
YES :
<1 k
Ω or more> Follow diagnostic item 17,
Diagnose CAN bus lines thoroughly. Refer
to
.
NO :
<Less than 1 k
Ω> Replace the A/C-ECU.
AC204740DE
Harness side: C-09
Test
harness
Test
harness
AC310613
AB
Connector: C-106 <LHD>
Harness side
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740
AC204740DT
Equipment side: C-106
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-312
STEP 11. Connector check: C-221 ETACS-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 12.
NO :
Repair the defective connector.
STEP 12. Resistance measurement at 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
ETACS-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 C-09 joint connector (CAN2)
terminal Nos. 3 and 14
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 13.
NO :
<2
Ω or less> Repair the wiring harness
between joint connector (CAN2) and the
ETACS-ECU connector.
AC310626
Connector: C-221
Junction block (Rear view)
<LHD>
AC
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Harness side
C-221(GR)
AC310615
AU
Harness side
Connector: C-09 <LHD>
C-09 (GR)
AC310626
Connector: C-221
Junction block (Rear view)
<LHD>
AC
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Harness side
C-221(GR)
AC204740DF
Harness side: C-09
Test
harness
Test
harness
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54D-313
STEP 13. Resistance measurement at C-221
ETACS-ECU connector.
CAUTION
A digital multimeter should be used. For details
refer to
(1) Remove the ETACS-ECU, and measure at the
equipment side.
(2) Resistance between C-221 ETACS-ECU
connector terminal Nos. 72 and 73
OK: 1 k
Ω or more
Q: Is the check result normal?
YES :
<1 k
Ω or more> Follow diagnostic item 17,
Diagnose CAN bus lines thoroughly. Refer
to
NO :
<Less than 1 k
Ω> Replace the
ETACS-ECU.
STEP 14. Connector check: C-37 jumper
connector
CAUTION
The strand end of the twist wire should be within
10 cm from the connector. For details refer to
Check that the wiring harness of the jumper
connector is not damaged.
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the defective connector.
STEP 15. Resistance measurement at the C-37
jumper 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
jumper connector (at the centre display 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
AC310626
Connector: C-221
Junction block (Rear view)
<LHD>
AC
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
Harness side
C-221(GR)
AC204740
69
60
51
55
64
71
62
53
61
70
52
63
54
73
67
66
65
72
56 57
68
74
59
58
AC204740
AC204740
AC204740
AC204740
AC204740DU
Equipment side: C-221
Test
harness
AC310615
AV
Connector: C-37 <LHD>
AC310615
AV
Connector: C-37 <LHD>
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