Nissan Sentra Service Manual: C1729 Vehicle speed signal
DTC Logic
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.
- Activate and display TPMS transmitter IDs
- Display tire pressure reported by the TPMS transmitter
- Read TPMS DTCs
- Register TPMS transmitter IDs
DTC DETECTION LOGIC
| DTC | Display Item | Malfunction detected condition | Possible causes |
| C1729 | VHCL SPEED SIG ERR | Vehicle speed signal not detected |
|
DTC CONFIRMATION PROCEDURE
1.PERFORM SELF DIAGNOSTIC RESULTWith CONSULT
With CONSULT
- Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more without stopping.
- Stop the vehicle.
- Perform “SELF DIAGNOSTIC RESULT”.
Is DTC “C1729” detected? YES >> Proceed to WT-32, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.
- Activate and display TPMS transmitter IDs
- Display tire pressure reported by the TPMS transmitter
- Read TPMS DTCs
- Register TPMS transmitter IDs
1.PERFORM COMBINATION METER SELF DIAGNOSTIC RESULT
With CONSULT
Perform “SELF DIAGNOSTIC RESULT” for “METER/M&A”. Refer to MWI-17, "CONSULT Function (METER/ M&A)".
Are any DTCs detected? YES >> Refer to MWI-26, "DTC Index".
NO >> GO TO 2.
2.CHECK BCM INPUT/OUTPUT SIGNAL
Check the BCM input/output signal values. Refer to BCS-29, "Reference Value" (with Intelligent Key system) or BCS-97, "Reference Value" (without Intelligent Key system).
Is the inspection result normal? YES >> Check pin terminal and connection of each harness connector for malfunctioning conditions.
NO >> Replace the BCM. Refer to BCS-73, "Removal and Installation" (with Intelligent Key system) or BCS-126, "Removal and Installation" (without Intelligent Key system).
C1716, C1717, C1718, C1719 Transmitter (pressure data)
DTC Logic
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following
functions. Refer to the Signal Tech II
User Guide for additional information.
Activate and display TPMS ...
Low tire pressure warning lamp
Component Function Check
1.CHECK THE ILLUMINATION OF THE LOW TIRE PRESSURE WARNING LAMP
Check that the low tire pressure warning lamp is turned OFF after
illuminating for approximately 1 second,
...
Other materials:
Special Service Tool
The actual shapes of Kent-Moore tools may differ from those of special
service tools illustrated here.
CAUTION:
Every time the vehicle is lifted up, maintain the complete vehicle
curb condition.
Since the vehicle's center of gravity changes when removing main
parts on the front si ...
Electrical load signal
Description
The electrical load signal (Headlamp switch signal, rear window defogger
switch signal, etc.) is transferred via
the CAN communication line.
Component Function Check
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
With CONSULT
Turn ignition switch ON.
Select “DATA MONITORР...
Basic inspection
Diagnosis and repair workflow
Workflow
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW CUSTOMER
Interview the customer to obtain as much information as possible about the
conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
...