Infiniti G37. LAN System (2013 year). Manual — part 12
LAN
MAIN LINE BETWEEN AV AND DLC CIRCUIT
LAN-177
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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YES (Past error)>>Error was detected in the main line between the AV control unit and the data link connec-
tor.
NO
>> Repair the main line between the harness connector M17 and the data link connector.
2013 G Sedan
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LAN-178
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INFOID:0000000008832394
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
-
Harness connector M7
-
Harness connector B1
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M7 and B1.
2.
Check the continuity between the data link connector and the harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the data link connector and the harness connector M7.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the harness connector terminals.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the data link connector and the driver seat
control unit.
NO
>> Repair the main line between the harness connector B1 and the driver seat control unit.
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M24
6
M7
20
Existed
14
21
Existed
Connector No.
Terminal No.
Continuity
B1
20
22
Existed
21
23
Existed
2013 G Sedan
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LAN
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
LAN-179
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure
INFOID:0000000008832395
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
-
Harness connector B1
-
Harness connector M7
-
Harness connector M6
-
Harness connector E106
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors B1 and M7.
2.
Check the continuity between the harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the driver seat control unit and the harness connector B1.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M6 and E106.
2.
Check the continuity between the harness connectors.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair the main line between the harness connector M7 and M6.
4.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of ABS actuator and electric unit (control unit).
2.
Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the driver seat control unit and the ABS actu-
ator and electric unit (control unit).
Connector No.
Terminal No.
Continuity
B1
20
22
Existed
21
23
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M7
22
M6
49
Existed
23
48
Existed
Harness connector
ABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E106
49
E41
35
Existed
48
14
Existed
2013 G Sedan
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LAN-180
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
NO
>> Repair the main line between the harness connector E106 and the ABS actuator and electric unit
(control unit).
2013 G Sedan
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LAN
ECM BRANCH LINE CIRCUIT
LAN-181
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832396
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and
connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ECM.
2.
Check the resistance between the ECM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to the following.
• VQ37VHR:
• VQ25HR:
Is the inspection result normal?
YES (Present error)>>Replace the ECM. Refer to the following.
• VQ37VHR:
EC-25, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM) :
• VQ25HR:
EC-631, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special
YES (Past error)>>Error was detected in the ECM branch line.
NO
>> Repair the power supply and the ground circuit.
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M107
114
113
Approx. 108 – 132
2013 G Sedan
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LAN-182
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
4WD BRANCH LINE CIRCUIT
4WD BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832397
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
AWD control unit connector
-
Harness connector F103
-
Harness connector M116
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AWD control unit.
2.
Check the resistance between the AWD control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AWD control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AWD control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the AWD control unit. Refer to
YES (Past error)>>Error was detected in the AWD control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AWD control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F108
8
16
Approx. 54 – 66
2013 G Sedan
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LAN
AV BRANCH LINE CIRCUIT
LAN-183
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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AV BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832398
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AV control unit.
2.
Check the resistance between the AV control unit harness connector terminals.
-
Models with navigation system
-
Models without navigation system (With rear view monitor)
-
Models without navigation system (Without rear view monitor)
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AV control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AV control unit. Refer to the following.
• Base audio without rear view monitor:
AV-36, "AV CONTROL UNIT : Diagnosis Procedure"
• Base audio with rear view monitor:
AV-145, "AV CONTROL UNIT : Diagnosis Procedure"
• BOSE audio without navigation:
AV-258, "AV CONTROL UNIT : Diagnosis Procedure"
• BOSE audio with navigation:
AV-399, "AV CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the AV control unit. Refer to the following.
• Base audio without rear view monitor:
• Base audio with rear view monitor:
• BOSE audio without navigation:
• BOSE audio with navigation:
YES (Past error)>>Error was detected in the AV control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M210
90
74
Approx. 54 – 66
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M204
81
80
Approx. 54 – 66
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M85
86
87
Approx. 54 – 66
2013 G Sedan
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LAN-184
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
PSB BRANCH LINE CIRCUIT
PSB BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832399
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the pre-crash seat belt control unit for damage, bend and loose
connection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of pre-crash seat belt control unit.
2.
Check the resistance between the pre-crash seat belt control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the pre-crash seat belt control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the pre-crash seat belt control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the pre-crash seat belt control unit. Refer to
YES (Past error)>>Error was detected in the pre-crash seat belt control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Pre-crash seat belt control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M110
24
22
Approx. 54 – 66
2013 G Sedan
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LAN
TCM BRANCH LINE CIRCUIT
LAN-185
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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TCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832400
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
A/T assembly
-
Harness connector F103
-
Harness connector M116
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of A/T assembly.
2.
Check the resistance between the A/T assembly harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the TCM branch line.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Remove the joint connector. Refer to
TM-277, "Removal and Installation"
2.
Check the continuity between the A/T assembly harness connector side and the TCM harness connector
side of the joint connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace the joint connector.
4.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the control valve & TCM. Refer to
TM-277, "Removal and Installation"
YES (Past error)>>Error was detected in the TCM branch line.
NO
>> Repair the power supply and the ground circuit.
A/T assembly harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F51
3
8
Approx. 54 – 66
A/T assembly harness connector side
TCM harness connector side
Continuity
Terminal No.
Terminal No.
3
3
Existed
8
8
Existed
2013 G Sedan
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LAN-186
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
A-BAG BRANCH LINE CIRCUIT
A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832401
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con-
nection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the main harness.
2.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Check the air bag diagnosis sensor unit. Refer to
Is the inspection result normal?
YES
>> Replace the main harness.
NO
>> Replace parts whose air bag system has a malfunction.
2013 G Sedan
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LAN
BCM BRANCH LINE CIRCUIT
LAN-187
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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BCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832402
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and
connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of BCM.
2.
Check the resistance between the BCM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the BCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the BCM. Refer to
.
YES (Past error)>>Error was detected in the BCM branch line.
NO
>> Repair the power supply and the ground circuit.
BCM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M122
91
90
Approx. 54 – 66
2013 G Sedan
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LAN-188
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
DLC BRANCH LINE CIRCUIT
DLC BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832403
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the data link connector for damage, bend and loose connection
(connector side and harness side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.
Is the measurement value within the specification?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the data link connector branch line circuit.
NO
>> Repair the data link connector branch line.
Data link connector
Resistance (
Ω
)
Connector No.
Terminal No.
M24
6
14
Approx. 54 – 66
2013 G Sedan
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LAN
M&A BRANCH LINE CIRCUIT
LAN-189
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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M&A BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832404
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the unified meter and A/C amp. for damage, bend and loose con-
nection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of unified meter and A/C amp.
2.
Check the resistance between the unified meter and A/C amp. harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the unified meter and A/C amp. branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to
METER AND A/C AMP. : Diagnosis Procedure"
.
Is the inspection result normal?
YES (Present error)>>Replace the unified meter and A/C amp. Refer to
YES (Past error)>>Error was detected in the unified meter and A/C amp. branch line.
NO
>> Repair the power supply and the ground circuit.
Unified meter and A/C amp. harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M67
56
72
Approx. 54 – 66
2013 G Sedan
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LAN-190
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
STRG BRANCH LINE CIRCUIT
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832405
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
(unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of steering angle sensor.
2.
Check the resistance between the steering angle sensor harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the steering angle sensor branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the steering angle sensor. Refer to
gram - BRAKE CONTROL SYSTEM -"
.
Is the inspection result normal?
YES (Present error)>>Replace the steering angle sensor. Refer to
.
YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO
>> Repair the power supply and the ground circuit.
Steering angle sensor harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M37
1
2
Approx. 54 – 66
2013 G Sedan
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LAN
ADP BRANCH LINE CIRCUIT
LAN-191
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
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ADP BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832406
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
Driver seat control unit
-
Harness connector B462
-
Harness connector B59
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of driver seat control unit.
2.
Check the resistance between the driver seat control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the driver seat control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B451
3
19
Approx. 54 – 66
2013 G Sedan
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LAN-192
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 8)]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000008832407
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend
and loose connection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ABS actuator and electric unit (control unit).
2.
Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ABS actuator and electric unit (control unit) branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to
YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.
NO
>> Repair the power supply and the ground circuit.
ABS actuator and electric unit (control unit) harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E41
35
14
Approx. 54 – 66
2013 G Sedan
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