Infiniti G37 Coupe. Manual — part 1414
WT-28
< COMPONENT DIAGNOSIS >
C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)
C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)
Description
INFOID:0000000001686975
A sensor -transmitter integrated with a valve is installed on a wheel, and transmits a detected air pressure sig-
nal by radio wave.
DTC Logic
INFOID:0000000001686976
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
VEHICLE DRIVING
With CONSULT-III
Driving at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed
10minutes. Then check all tire pressure with CONSULT-III “DATA MONITOR” within 5 minutes.
Does “DATA MONITOR” displayed the standardized value without turning low tire pressure warning lamp ON?
YES
>> INSPECTION END
NO
>> Go to diagnosis procedure. Refer to
.
Diagnosis Procedure
INFOID:0000000001686977
1.
CHECK ID REGISTRATION
With CONSULT-III
1.
Perform the ID registration of all transmitters. Refer to
WT-5, "ID REGISTRATION PROCEDURE : Special
2.
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-III “DATA MONITOR” within 5 minutes.
Can ID registration of all transmitters be completed?
YES
>> GO TO 6.
NO
>> GO TO 2.
2.
CHECK AIR PRESSURE SIGNAL
With CONSULT-III
1.
Start engine.
2.
Select “DATA MONITOR” mode for “AIR PRESSURE MONITOR” with CONSULT-III.
3.
Read out the value of “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR” and “AIR PRESS RL”.
DTC
number
Trouble diagnosis name
DTC detecting condition
Possible case
C1724
[BATT VOLT LOW] FL
Battery voltage of front-LH transmitter drops.
• Transmitter malfunction
• Tire pressure receiver
malfunction
• BCM malfunction
C1725
[BATT VOLT LOW] FR
Battery voltage of front-RH transmitter drops.
C1726
[BATT VOLT LOW] RR
Battery voltage of rear-RH transmitter drops.
C1727
[BATT VOLT LOW] RL
Battery voltage of rear-LH transmitter drops.
Monitored item
Condition
Display value
AIR PRESS FL
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately equal to the indication on vehicle in-
formation display.
AIR PRESS FL
AIR PRESS FL
AIR PRESS FL
C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)
WT-29
< COMPONENT DIAGNOSIS >
C
D
F
G
H
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K
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A
B
WT
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Are all tire pressures displayed 0 kPa?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK HARNESS BETWEEN BCM AND TIRE PERSSURE RECEIVER
1.
Turn ignition switch “OFF”.
2.
Disconnect BCM harness connector and tire pressure receiver harness connector.
3.
Check continuity between BCM harness connector and tire pressure receiver harness connector.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK TIRE PRESSURE RECEIVER
Check tire pressure receiver. Refer to
.
Is the inspection result normal?
YES
>> Check BCM pin terminals for damage or loose connection with harness connector. If any items
are damaged, repair or replace damage parts.
NO
>> Replace the tire pressure receiver.
5.
CHECK ID REGISTRATION
Perform ID registration of all transmitters. Refer to
WT-5, "ID REGISTRATION PROCEDURE : Special Repair
Can ID registration of all transmitters be completed?
YES
>> GO TO 6.
NO
>> GO TO 7 after malfunctioning transmitter replacement.
6.
CHECK TIRE PRESSURE MONITORING SYSTEM
With CONSULT-III
1.
Drive at a speed for 40 km/h (25 MPH) or more several minutes without stopping.
2.
Check all tire pressure with CONSULT-III “DATA MONITOR” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).
Does “DATA MONITOR” displayed the standardized value without turning low tire pressure warning lamp ON?
YES
>> INSPECTION END
NO
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
7.
CHECK ID REGISTRATION
With CONSULT-III
1.
Perform ID registration of all transmitters. Refer to
WT-5, "ID REGISTRATION PROCEDURE : Special
2.
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-III “DATA MONITOR” within 5 minutes.
Monitored item
Condition
Display value
AIR PRESS FL
Start engine and drive at 40 km/h (25 MPH) or more for
several minutes.
Approximately equal to the indication on vehicle in-
formation display
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL
BCM
Tire pressure receiver
Continuity
Connector
Terminal
Connector
Terminal
M123
137
M101
1
Existed
138
4
139
2
WT-30
< COMPONENT DIAGNOSIS >
C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)
Does “DATA MONITOR” displayed the standardized value without turning low tire pressure warning lamp ON?
YES
>> INSPECTION END
NO
>> GO TO 2.
Special Repair Requirement
INFOID:0000000001686978
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-5, "ID REGISTRATION PROCEDURE : Special Repair Requirement"
.
Can ID registration of all transmitters be completed?
YES
>> END
NO
>> GO TO 1.
C1729 VEHICLE SPEED SIG ERR
WT-31
< COMPONENT DIAGNOSIS >
C
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G
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A
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WT
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C1729 VEHICLE SPEED SIG ERR
Description
INFOID:0000000001686979
BCM detects no vehicle speed signal.
DTC Logic
INFOID:0000000001686980
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
VEHICLE DRIVING
With CONSULT-III
Drive at speed 40 km/h (25 MPH) or more for several minutes without stopping.
Does “DATA MONITOR” displayed the standardized value without turning low pressure warning lamp ON?
YES
>> INSPECTION END
NO
>> Go to diagnosis procedure. Refer to
.
Diagnosis Procedure
INFOID:0000000001686981
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.
Is the “CAN COMM CIRCUIT” displayed in the self-diagnosis display?
YES
>> Perform trouble diagnosis for CAN communication system. Refer to
NO
>> Check unified meter and A/C amp. Refer to
.
Special Repair Requirement
INFOID:0000000001686982
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-5, "ID REGISTRATION PROCEDURE : Special Repair Requirement"
.
Can ID registration of all transmitters be completed?
YES
>> END
NO
>> GO TO 1.
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-
.
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