NISSAN PRIMERA 1999 Electronic Owner's Guide

IntroductionNCAT0023
The TCM receives a signal from the vehicle speed sensor, throttle
position sensor or PNP switch and provides shift control or lock-up
control via step motor and CVT solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
CVT system for malfunction-diagnostic purposes. The TCM is
capable of diagnosing malfunctioning parts while the ECM can
store malfunctions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve
malfunction, etc.
It is much more difficult to diagnose a problem that occurs intermit-
tently rather than continuously. Most intermittent problems are
caused by poor electric connections or improper wiring. In this
case, careful checking of suspected circuits may help prevent the
replacement of good parts.
A visual check only may not find the cause of the problems. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the ªWork Flowº. Refer to AT-32.
Before undertaking actual checks, take a few minutes to talk with
a customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such problems, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A ªDiagnostic Worksheetº like the
example (AT-31) should be used.
Start your diagnosis by looking for ªconventionalº problems first.
This will help troubleshoot driveability problems on an electronically
controlled engine vehicle.
Also check related Service bulletins for information.
SAT631IA Sensors
TCM
ECM
Solenoid valves
SAT632I INFO.CAUSE
SEF234G
TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction
AT-29

DIAGNOSTIC WORKSHEET=NCAT0023S01Information from CustomerNCAT0023S0101KEY POINTS
WHAT..... Vehicle & CVT model
WHEN..... Date, Frequencies
WHERE..... Road conditions
HOW..... Operating conditions, Symptoms
Customer name MR/MS Model & Year VIN
Trans. model Engine Mileage
Incident Date Manuf. Date In Service Date
FrequencylContinuouslIntermittent ( times a day)
lVehicle does not move. (lAny positionlParticular position)
SymptomslLockup malfunction
lShift point too high or too low.
lShift shock or slip (lN,DlLockuplAny drive position)
lNoise or vibration
lNo pattern select
lOthers
()
SPORT indicator lamp or CVT
indicator (warning) lampBlinks for about 8 seconds.
lContinuously litlNot lit
Malfunction indicator (MI)lContinuously litlNot lit
TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction (Cont'd)
AT-30

Diagnostic Worksheet=NCAT0023S0102
1.lRead the Fail-safe and listen to customer complaints. AT-6
2.lCHECK CVT FLUIDAT-34
lLeakage (Follow specified procedure)
lFluid condition
lFluid level
3.lPerform STALL TEST and LINE PRESSURE TEST. AT-34, 35
lStall test Ð Mark possible damaged components/others.
lForward clutchlReverse brake
lEngine
lLine pressure is low
lLine Pressure test Ð Suspected parts:
4.lPerform all ROAD TEST and mark required procedures. AT-36
4-1. Check before engine is started.AT-37
lSELF-DIAGNOSTIC PROCEDURE Ð Mark detected items.
lPNP switch, AT-48.
lCVT fluid temperature sensor, AT-54.
lVehicle speed sensor (Secondary speed sensor), AT-62.
lEngine speed signal, AT-66.
lTorque converter clutch solenoid valve, AT-69.
lLine pressure solenoid valve, AT-74.
lStep motor, AT-86, 91.
lCVT fluid pressure sensor, AT-94.
lThrottle position sensor, AT-79.
lStop lamp and throttle position switches.
lCVT fluid temperature sensor and TCM power source, AT-54.
lPrimary speed sensor, AT-59.
lPNP switch, stop lamp switch, throttle position switch AT-105.
lBattery
lOthers
5.lFor self-diagnosis NG items, inspect each component. Repair or replace the damaged parts. AT-19
6.lPerform all ROAD TEST and re-mark required procedures. AT-36
7.lPerform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged
parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible
symptoms and the component inspection orders.)AT-41
AT-54
8.lErase DTC from TCM and ECM memories. AT-16
TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction (Cont'd)
AT-31

Work Flow=NCAT0024HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIRNCAT0024S01A good understanding of the malfunction conditions can make troubleshooting faster and more accurate. In
general, each customer feels differently about a problem. It is important to fully understand the symptoms or
conditions for a customer complaint.
Make good use of the two sheets provided, ªINFORMATION FROM CUSTOMERº (AT-30) and ªDIAGNOS-
TIC WORKSHEETº (AT-31), to perform the best troubleshooting possible.
TROUBLE DIAGNOSIS Ð INTRODUCTION
Work Flow
AT-32

WORK FLOW CHART=NCAT0024S02
CHECK IN
LISTEN TO CUSTOMER COMPLAINTS AND FILL OUT
ªINFORMATION FROM CUSTOMERº, *1FRefer to FAIL-SAFE Service Notice or
Precautions, *3.
CHECK,PRINT OUTOR WRITE DOWN (1ST TRIP) DTC AND
FREEZE FRAME DATA. (PRE-CHECK) THEN ERASE.
PASTE IT IN REPAIR ORDER SHEET.
ALSO CHECK RELATED SERVICE BULLETINS.
CHECK A/T FLUID LEVEL AND CONDITION. IF NG, PLACE
CHECK ON THE DIAGNOSTIC WORKSHEET, *2.FRefer to CVT Fluid Check, *4.
PERFORM STALL TEST AND LINE PRESSURE TEST.FRefer to Stall Test and Line Pressure Test, *5.
PERFORM ªDTC CONFIRMATION PROCEDUREº IF THE (1ST
TRIP) DTC IS AVAILABLE.
PERFORM ROAD TEST AND PLACE CHECKS FOR NG ITEMS
ON THE DIAGNOSTIC WORKSHEET.
H
No NG item or NG items
not including any OBD
DTC or TCM self-diagnostic
itemsNG items including OBD
(1st trip) DTC or TCM self-
diagnostic item
FFollow ROAD TEST procedure, *6.
lFOR OBD or TCM SELF-DIAGNOSIS NG ITEMS:
-INSPECT EACH COMPONENT.
-REPAIR/REPLACE.
lPERFORM DTC CONFIRMATION PROCEDURE OR
ROAD TEST AND PLACE CHECKS FOR NG ITEMS
ON THE DIAGNOSTIC WORKSHEET AGAIN.
FlRefer to CONSULT-II, *7.
lPerform ROAD TEST for all items.
lProceed if self-diagnosis detects no malfunc-
tion.
(Non-self-diagnostic items, especially those
that require CVT removal, should be repaired
in the following steps.)
ElFOR ALL REMAINING MALFUNCTIONS:
-INSPECT EACH COMPONENT.
-REPAIR/REPLACE.
lPERFORM ROAD TEST AND CONFIRM ALL MALFUNCTIONS
ARE ELIMINATED.
FRefer to
lON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION, *8 - *9.
lTROUBLE DIAGNOSIS FOR DTC, *10 - *11.
lTROUBLE DIAGNOSES FOR SYMPTOMS,
*12.
ERASE DTC FROM TCM AND ECM MEMORIES.FRefer to HOW TO ERASE DTC, *13.
NGFINAL CHECK
Confirm that the incident is completely fixed by performing BASIC
INSPECTION and DTC CONFIRMATION PROCEDURE. Then,
erase the unnecessary (already fixed) 1st trip DTCs in ECM and
TCM.FRefer to DTC CONFIRMATION PROCEDURE.
*14 - *15.
EOK
CHECK OUT
SAT086JC
*1: AT-30
*2: AT-31
*3: AT-6
*4: AT-34
*5: AT-34, 35*6: AT-36
*7: AT-18
*8: AT-15
*9: AT-26
*10: AT-48*11: AT-94
*12: AT-110
*13: AT-16
*14: AT-49
*15: AT-95
TROUBLE DIAGNOSIS Ð INTRODUCTION
Work Flow (Cont'd)
H
H
H
H
H
H
H
H
H
AT-33

CVT Fluid CheckNCAT0025FLUID LEAKAGE CHECKNCAT0025S011. Clean area suspected of leaking. Ð for example, mating sur-
face of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in ªDº posi-
tion and wait a few minutes.
3. Stop engine.
4. Check for fluid leakage.
FLUID CONDITION CHECKNCAT0025S02
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination Ð Road water
entering through filler tube or breather
Varnished fluid, light to dark brown and
tackyOxidation Ð Over or under filling, Ð
Overheating
FLUID LEVEL CHECKNCAT0025S03Refer to MA section (ªChecking CVT Fluidº, ªCHASSIS AND BODY
MAINTENANCEº).
Stall TestNCAT0026STALL TEST PROCEDURENCAT0026S011. Check CVT fluid and engine oil levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until engine oil and CVT
fluid reach operating temperature.
CVT fluid operating temperature:
50 - 80ÉC (122 - 176ÉF)
SAT767B
SAT288G Fluid leakage
SAT638A
SAT647B
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
CVT Fluid Check
AT-34

3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test.
IIt is good practice to mark the point of specified engine
rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in D
position.
6. Accelerate to wide open throttle gradually while applying foot
brake.
7. Quickly note the engine stall revolution and immediately
release throttle.
IDuring test, never hold throttle wide open for more than 5
seconds.
Stall revolution:
2,350 - 2,850 rpm
8. Move selector lever to ªNº position.
9. Cool off CVT fluid.
IRun engine at idle for at least one minute.
Line Pressure TestNCAT0027LINE PRESSURE TEST PORTSNCAT0027S01Location of line pressure test ports are shown in the illustration.
IAlways replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURENCAT0027S021. Check CVT fluid and engine oil levels. If necessary, add fluid
or oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and CVT
fluid reach operating temperature.
CVT fluid operating temperature:
50 - 80ÉC (122 - 176ÉF)
SAT513G
SAT514G Less
than
5 sec.
SAT771B
SAT670J Line pressure test port
SAT647B
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
Stall Test (Cont'd)
AT-35

3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
IContinue to depress brake pedal fully while line pressure
test is being performed at stall speed.
5. Start engine and measure line pressure at idle and stall speed.
IWhen measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to SDS, AT-120.
Road TestNCAT0028DESCRIPTIONNCAT0028S01IThe purpose of the test is to determine overall performance of
CVT and analyze causes of problems.
IThe road test consists of the following three parts:
1. Check before engine is started
2. Cruise test
IBefore road test, familiarize yourself with all test procedures
and items to check.
IConduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to ªON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TIONº and ªTROUBLE DIAGNOSIS FOR SYMPTOMSº,
AT-15, AT-26 and AT-110.
SAT513G
SAT493G
SAT692J
ROAD TEST PROCEDURE
1. Check before engine is started.
2. Cruise test.
SAT496G
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
Line Pressure Test (Cont'd)
AT-36

1. CHECK BEFORE ENGINE IS STARTED=NCAT0028S02
1 CHECK SPORT OR CVT INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to ªPº position.
SAT967IA
SPORT or
CVT
3. Turn ignition switch to ªOFFº position. Wait at least 5 seconds.
4. Turn ignition switch to ªONº position. (Do not start engine.)
5. Does CVT or SPORT indicator lamp come on for about 2 seconds?
YesorNo
Ye s©GO TO 2.
No©Stop ROAD TEST.
2 CHECK CVT OR SPORT INDICATOR LAMP
Does CVT or SPORT indicator lamp flicker for about 8 seconds?
YesorNo
Ye s©Perform self-diagnosis and check NG items on the DIAGNOSTIC WORKSHEET, AT-31.
Refer to TCM SELF-DIAGNOSIS PROCEDURE (NO TOOLS), AT-25.
No©1. Turn ignition switch to ªOFFº position.
2. Perform self-diagnosis and note NG items.
Refer to TCM SELF-DIAGNOSIS PROCEDURE (NO TOOLS), AT-25.
3 TEST DRIVE
Drive the vehicle and verify that there are no abnormalities.
©TEST END
2. CRUISE TESTNCAT0028S04ICheck all items listed in Parts 1 through 3.
With CONSULT-IINCAT0028S0401IUsing CONSULT-II, conduct a cruise test and record the result.
IPrint the result and ensure that shifts and lock-ups take place
as per Shift Schedule.
SAT601J
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
Road Test (Cont'd)
AT-37

CONSULT-II Setting ProcedureNCAT0028S04021. Turn ignition switch ªOFFº.
2. Connect CONSULT-II to Data link connector. Data link connec-
tor is located in left side dash panel.
3. Turn ignition switch ªONº.
4. Touch ªSTARTº.
5. Touch ªCVTº.
6. Touch ªDATA MONITORº.
7. Touch ªMAIN SIGNALSº to set recording condition.
8. See ªNumerical Displayº, ªBarchart Displayº or ªLine Graph
Displayº.
9. Touch ªSTARTº.
NRS071 Data link connector
SAT586J
SAT651J
SAT732J
PAT902H
TROUBLE DIAGNOSIS Ð BASIC INSPECTION
Road Test (Cont'd)
AT-38