DTC P0797 PRESSURE CONTROL SOLENOID VALVE C STUCK ON
AT-581
[RE5F22A]
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Revision: November 2006
2006 Altima
DTC P0797 PRESSURE CONTROL SOLENOID VALVE C STUCK ON
PFP:31940
Description
ECS009HS
●
This malfunction will not be detected while the A/T CHECK indicator lamp is indicating another self-diag-
nosis malfunction.
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This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such
as control valve sticking, improper solenoid valve operation, etc.
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The pressure control solenoid valve C is normally low, 3-port lin-
ear pressure control solenoid.
●
The pressure control solenoid valve C is activated to control the
apply and release of the 2nd brake and 1st and reverse brake,
and torque converter clutch.
●
Lock-up operation, however, is prohibited when A/T fluid tem-
perature is too low.
●
When the accelerator pedal is depressed (less than 1/8) in lock-
up condition, the engine speed should not change abruptly. If
there is a big jump in engine speed, there is no lock-up.
On Board Diagnosis Logic
ECS009HT
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This is an OBD-II self-diagnostic item.
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Diagnostic trouble code “PC SOL C STC ON” with CONSULT-II or P0797 without CONSULT-II is detected
when condition of pressure control solenoid valve C is different from monitor value, and relation between
gear position and actual gear ratio or lock-up status is irregular.
Possible Cause
ECS009HU
●
Pressure control solenoid valve C
(On stick.)
●
Hydraulic control circuit
DTC Confirmation Procedure
ECS009HV
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 “A/T” with “DATA MONITOR” mode in CONSULT-II.
3.
Start engine.
4.
Run engine for at least 4 consecutive minutes at idle speed.
5.
If DTC is detected, go to
AT-583, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “With CONSULT-II”.
SCIA2833E
BCIA0030E
