Nissan Altima (L32) 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:
B2604 PNP switch
Description
BCM confirms the shift position with the following 4 signals.
• CVT selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2604 is displayed with DTC U1000, first ...
P0643 sensor power supply
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn
ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following proced ...
M&A branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the combination meter for damage, bend
and loose connection
(unit side and connector side).
...