DTC P0722 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) CIRCUIT
AT-497
[RE5F22A]
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Revision: November 2006
2006 Altima
DTC P0722 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) CIRCUIT
PFP:31935
Description
ECS009EJ
●
The revolution sensor detects the revolution of the idler gear
parking pawl lock gear and emits a pulse signal. The pulse sig-
nal is sent to the TCM which converts it into vehicle speed.
●
Hall IC is installed in revolution sensor, it itself handles in pulse
of rectangular wave signal and transmits it to TCM due to hall
effect. TCM recognizes the pulse with vehicle speed. Size of
output doesn't depend on a rotation number and is fixed.
On Board Diagnosis Logic
ECS009EK
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This is an OBD-II self-diagnostic item.
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Diagnostic trouble code “VHCL SPEED SEN-A/T” with CONSULT-II or P0722 without CONSULT-II is
detected under the following conditions.
–
When signal from revolution sensor does not input due to open, short, and so on.
–
When unexpected signal input during running.
Possible Cause
ECS009EL
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Harness or connectors
(The sensor circuit is open or shorted.)
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Revolution sensor
DTC Confirmation Procedure
ECS009EM
CAUTION:
●
Always drive vehicle at a safe speed.
●
Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3.
Start engine.
4.
Drive vehicle and check for an increase of “VHCL/S SE-A/T”
value in response to “VHCL/S SE-MTR” value.
If the check result is NG, go to
AT-499, "Diagnostic Procedure"
If the check result is OK, go to following step.
5.
Maintain the following conditions for at least 2 consecutive min-
utes.
FLUID TEMP: More than 20
°
C (68
°
F)
VHCL/S SE-A/T: 70 km/h (43 MPH) or more
SLCT LVR POSI: “D” position
If the check result is NG, go to
AT-499, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
SCIA2830E
BCIA0030E