Infiniti G37 Coupe. Manual — part 924
MWI-42
< COMPONENT DIAGNOSIS >
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000001606651
Initial diagnosis of unified meter and A/C amp.
DTC Logic
INFOID:0000000001606652
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000001606653
1.
REPLACE UNIFIED METER AND A/C AMP.
When DTC “U1010” is detected, replace unified meter and A/C amp.
>> INSPECTION END
DTC
Display contents of CON-
SULT-III
Diagnostic item is detected when ...
Probable malfunction location
U1010
CONTROL UNIT (CAN)
If any malfunction is detected during initial di-
agnosis of unified meter and A/C amp. CAN
controller
Unified meter and A/C amp.
MWI
B2201 COMMUNICATION ERROR 1
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< COMPONENT DIAGNOSIS >
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B2201 COMMUNICATION ERROR 1
Description
INFOID:0000000001606654
The communication line (LCD <-> AMP.) is used to communicate signals between the combination meter and
the unified meter and A/C amp. in order to control the information display.
DTC Logic
INFOID:0000000001606655
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000001606656
1.
CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair terminal or connector.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and unified meter and A/C amp. connector.
3.
Check continuity between combination meter harness connector terminal and unified meter and A/C amp.
harness connector terminal.
4.
Check continuity between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK UNIFIED METER AND A/C AMP. OUTPUT VOLTAGE
1.
Connect unified meter and A/C amp. connector.
2.
Turn ignition switch ON.
3.
Check voltage between unified meter and A/C amp. harness connector terminal and ground.
DTC
Display contents of
CONSULT-III
Diagnostic item is detected when ...
Probable malfunction location
B2201
COMM ERROR 1
If a communication error is present in the
communication line (LCD <-> AMP.) for 2 sec-
onds or more
Communication line (LCD <-> AMP.) circuit
Combination meter
Unified meter and A/C amp.
Continuity
Connector
Terminals
Connector
Terminals
M53
24
M66
14
Existed
25
34
Combination meter
Ground
Continuity
Connector
Terminals
M53
24
Not existed
25
MWI-44
< COMPONENT DIAGNOSIS >
B2201 COMMUNICATION ERROR 1
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace unified meter and A/C amp.
4.
CHECK COMBINATION METER OUTPUT VOLTAGE
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Connect combination meter connector.
4.
Turn ignition switch ON.
5.
Check voltage between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace combination meter.
Terminal
Voltage
(Approx.)
(+)
(–)
Unified meter and A/C amp.
Connector
Terminal
M66
14
Ground
12 V
Terminal
Voltage
(Approx.)
(+)
(–)
Combination meter
Connector
Terminal
M53
25
Ground
5 V
MWI
B2202 COMMUNICATION ERROR 2
MWI-45
< COMPONENT DIAGNOSIS >
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B2202 COMMUNICATION ERROR 2
Description
INFOID:0000000001606657
The communication line (METER <-> AMP.) is used to communicate signals between the combination meter
and the unified meter and A/C amp. in order to control the information display.
DTC Logic
INFOID:0000000001606658
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000001606659
1.
CHECK CONNECTOR
Check combination meter, unified meter and A/C amp. and terminals (combination meter side, unified meter
and A/C amp. side, and harness side) for looseness or bent.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair terminal or connector.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and unified meter and A/C amp. connector.
3.
Check continuity between combination meter harness connector terminal and unified meter and A/C amp.
harness connector terminal.
4.
Check continuity between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK UNIFIED METER AND A/C AMP. OUTPUT VOLTAGE
1.
Connect unified meter and A/C amp. connector.
2.
Turn ignition switch ON.
3.
Check voltage between unified meter and A/C amp. harness connector terminal and ground.
DTC
Display contents of
CONSULT-III
Diagnostic item is detected when ...
Probable malfunction location
B2202
COMM ERROR 2
If a communication error is present in the
communication line (METER <-> AMP.) for 2
seconds or more
Communication line (METER <-> AMP.) circuit
Combination meter
Unified meter and A/C amp.
Continuity
Connector
Terminals
Connector
Terminals
M53
2
M66
27
Existed
3
7
Combination meter
Ground
Continuity
Connector
Terminals
M53
2
Not existed
3
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