Nissan Primera P11. Manual — part 25
Diagnostic Procedure
NCAT0234
1
CHECK PRESSURE SENSOR
Refer to “Component Inspection”, AT-98.
OK or NG
OK (With CONSULT-II)
©
GO TO 2.
OK (Without CONSULT-II)
©
GO TO 3.
NG
©
Repair or replace pressure sensor.
2
CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select “ECU Input Item Parameter List” in “DATA MONITOR” mode for “CVT” with CONSULT-II.
3. Read out the value of “LINE PRES SEN” while driving.
I
Throttle valve fully closed (PL Duty: 4%): Approx. 1.0V
I
Throttle valve fully depressed (PL Duty: 94%): Approx. 4.0V
OK or NG
OK
©
GO TO 4.
NG
©
Check the following items:
I
Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness)
I
Ground circuit for ECM
Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).
3
CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
Refer to “Component Inspection”, AT-98.
OK or NG
OK
©
GO TO 4.
NG
©
Check the following items:
I
Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness).
I
Ground circuit for ECM
Refer to EC section (“TROUBLE DIAGNOSIS FOR POWER SUPPLY”).
4
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-95.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
DTC P1791 CVT FLUID PRESSURE SENSOR
Diagnostic Procedure
AT-97
Component Inspection
=NCAT0235
CVT FLUID PRESSURE SENSOR
NCAT0235S01
I
Start engine.
I
Check voltage between terminals 1 and 6, 6 and 10.
Terminal No.
Voltage
1
6
Approx. 0.5 - 4.5V
6
10
Approx. 4.5 - 5.5V
SAT691J
CVT fluid pressure sensor connector
DTC P1791 CVT FLUID PRESSURE SENSOR
Component Inspection
AT-98
Description
“CVT SAFE FUNCTION” is function to protect CVT.
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code
Malfunction is detected when ...
Check items (Possible cause)
: CVT SAFE FUNCTION
TCM is malfunctioning
TCM
: 10th judgement flicker
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
With CONSULT-II
1)
Turn ignition switch “ON” and select “DATA MONITOR” mode
for CVT with CONSULT-II.
2)
Start engine.
3)
Run engine for at least 2 seconds at idle speed.
Without CONSULT-II
1)
Start engine.
2)
Perform self-diagnosis. Refer to SELF-DIAGNOSTIC PROCE-
DURE (Without CONSULT-II), AT-25.
SAT651J
SAT971J
SAT455FA
Light
Shade
CVT SAFE FUNCTION
Description
AT-99
Diagnostic Procedure
1
CHECK INPUT SIGNAL (With CONSULT-II)
1. Turn ignition switch to “ON” and select “SELF DIAG RESULTS” mode for CVT with CONSULT-II.
2. Touch “ERASE”.
Perform “DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE”. See previous page.
Is the “CVT SAFE FUNCTION” displayed again?
YES
©
Replace TCM
NO
©
INSPECTION END
CVT SAFE FUNCTION
Diagnostic Procedure
AT-100
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