Nissan Altima 2007-2012 Service Manual: P1722 Estm vehicle speed signal
Description
The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN communication line.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed. NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
1. Turn ignition switch ON.
2. Select “DATA MONITOR”.
3. Start engine and maintain the following conditions for at least 5 consecutive seconds.
Is “P1722 ESTM VEH SPD SIG” detected? YES >> Go to TM-176, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform “SELF-DIAG RESULTS” mode for “ABS”.
Is the inspection result normal? YES >> GO TO 2.
NO >> Check DTC detected item. Refer to BRC-121, "DTC No. Index" (TCS/ABS), BRC-223, "DTC No.
Index" (VDC/TCS/ABS).
2.CHECK DTC WITH TCM
Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is “P1722 ESTM VEH SPD SIG” detected? YES >> Replace TCM. Refer to TM-254, "Exploded View".
NO >> GO TO 3.
3.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> Replace TCM. Refer to TM-254, "Exploded View".
NO >> Repair or replace damaged parts.
P1705 throttle position sensor
Description
Electric throttle control actuator consists of throttle control motor,
accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM ...
P1723 CVT speed sensor function
Description
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)]
detects the revolution of
parking gear and generates a pulse signal. The pulse signal is sent to the TCM,
...
Other materials:
ASCD Indicator
Description
The ASCD operation status is indicated by two indicators, (CRUISE and SET on
the information display) on
the combination meter.
CRUISE indicator is displayed to indicate that ASCD system is ready for
operation when MAIN switch on
ASCD steering switch is turned ON.
SET indic ...
P0452 evap control system pressure
sensor
Description
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pressure
increases.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously condu ...
P2135 TP sensor
Description
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the ...