Infiniti EX35. Manual — part 1519
WT-32
< COMPONENT DIAGNOSIS >
C1729 VEHICLE SPEED SIGNAL
C1729 VEHICLE SPEED SIGNAL
Description
INFOID:0000000003579730
BCM detects no vehicle speed signal.
DTC Logic
INFOID:0000000003579731
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
2.
Perform BCM self-diagnosis.
Is DTC “C1729” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003579732
1.
CHECK UNIFIED METER AND A/C AMP. SELF-DIAGNOSIS
With CONSULT-III
Perform unified meter and A/C amp. self-diagnosis.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> Check unified meter and A/C amp.
HAC-104, "Diagnosis Procedure"
Special Repair Requirement
INFOID:0000000003579733
1.
CHECK TIRE AIR PRESSURE
Check all tire air pressures. Refer to
.
Does all tire pressure data meet the specification?
YES
>> GO TO 2.
NO
>> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.
2.
PERFORM ID REGISTRATION
Perform ID registration. Refer to
WT-6, "ID REGISTRATION PROCEDURE : Special Repair Requirement"
.
>> END
DTC
number
Trouble diagnosis name
DTC detecting condition
Possible case
C1729
VHCL SPEED SIG ERR
Vehicle speed signal error.
• CAN communication error
• Unified meter and A/C amp. mal-
function
C1734 BCM
WT-33
< COMPONENT DIAGNOSIS >
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C1734 BCM
Description
INFOID:0000000003579734
The BCM (1) reads the air pressure signal received by the tire pres-
sure receiver, and controls the low tire pressure warning lamp and
the buzzer operations. It also has a judgment function to detect a
system malfunction.
DTC Logic
INFOID:0000000003579735
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
2.
Perform BCM self-diagnosis with CONSULT-III “DATA MONITOR” within 15 minutes after stopped vehicle.
Is DTC “C1734” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003579736
1.
CHECK SELF-DIAGNOSTIC RESULTS
With CONSULT-III
1.
On “SELECT DIAG” mode, select the “SELF-DIAG RESULT” screen.
2.
Check display contents in self-diagnostic results.
Does self-diagnostic results indicate any malfunction?
YES
>> Perform trouble diagnosis. Refer to
NO
>> GO TO 2.
2.
CHECK BCM POWER SUPPLY CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect BCM harness connector.
3.
Check voltage between BCM harness connector terminals and ground.
Is the power supply normal?
YES
>> GO TO 3.
NO
>>
Check the following. If any items are damaged, repair or replace damage parts.
• 40A fusible link [No. K located in the fuse block]. Refer to
.
JPEIC0049ZZ
DTC
Display item
Malfunction detected condition
Possible case
C1734
CONTROL UNIT
Tire pressure monitoring system malfunction in BCM
BCM malfunction
BCM
—
Voltage
Connector
Terminal
M118
1
Ground
Battery voltage
M119
11
WT-34
< COMPONENT DIAGNOSIS >
C1734 BCM
• 10A fuse [No. 10 located in the fuse block (J/B)]. Refer to
PG-98, "Fuse, Connector and Termi-
• Harness for short or open between battery and BCM harness connector M118 terminal 1.
• Harness for short or open between battery and BCM harness connector M119 terminal 11.
• Check Battery voltage.
3.
CHECK BCM GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to power in harness or connectors.
4.
CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER
1.
Disconnect tire pressure receiver harness connector.
2.
Check continuity between BCM harness connector and tire pressure receiver harness connector.
3.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK BCM
Check BCM input/output signal. Refer to
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 6.
6.
CHECK BCM HARNESS CONNECTOR
Check BCM pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-84, "Removal and Installation"
NO
>> Repair or replace damaged parts.
Special Repair Requirement
INFOID:0000000003579737
1.
CHECK TIRE AIR PRESSURE
Check all tire air pressures. Refer to
.
Does all tire pressure data meet the specification?
BCM
—
Continuity
Connector
Terminal
M119
13
Ground
Existed
BCM
Tire pressure receiver
Continuity
Connector
Terminal
Connector
Terminal
M123
137
M101
1
Existed
138
4
139
2
BCM
—
Continuity
Connector
Terminal
M123
137
Ground
Not existed
138
139
C1734 BCM
WT-35
< COMPONENT DIAGNOSIS >
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YES
>> GO TO 2.
NO
>> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.
2.
PERFORM ID REGISTRATION
Perform ID registration. Refer to
WT-6, "ID REGISTRATION PROCEDURE : Special Repair Requirement"
.
>> END
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