elec INFINITI QX4 2001 Factory Owner's Manual

SAT987J
2. Touch ªSELF-DIAG RESULTSº.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODENBAT0184S02
Detected items
(Screen terms for CONSULT-II, ªSELF-DIAG
RESULTSº test mode)
Malfunction is detected when ...TCM self-diagnosis OBD-II (DTC)
Available by
O/D OFF
indicator lamp or
ªA/Tº on CONSULT-IIAvailable by
malfunction
indicator lamp*2,
ªENGINEº on CON-
SULT-II or GST ªA/Tº ªENGINEº
PNP switch circuitITCM does not receive the cor-
rect voltage signal (based on
the gear position) from the
switch.Ð P0705
ÐPNP SW/CIRC
Revolution sensorITCM does not receive the
proper voltage signal from the
sensor.X P0720
VHCL SPEED
SEN´A/TVEH SPD SEN/CIR
AT
Vehicle speed sensor (Meter)ITCM does not receive the
proper voltage signal from the
sensor.XÐ
VHCL SPEED
SEN´MTRÐ
A/T 1st gear functionIA/T cannot be shifted to the 1st
gear position even if electrical
circuit is good.Ð P0731*1
ÐA/T 1ST GR FNCTN
A/T 2nd gear functionIA/T cannot be shifted to the 2nd
gear position even if electrical
circuit is good.Ð P0732*1
ÐA/T 2ND GR FNCTN
A/T 3rd gear functionIA/T cannot be shifted to the 3rd
gear position even if electrical
circuit is good.Ð P0733*1
ÐA/T 3RD GR FNCTN
A/T 4th gear functionIA/T cannot be shifted to the 4th
gear position even if electrical
circuit is good.Ð P0734*1
ÐA/T 4TH GR FNCTN
A/T TCC S/V function (lock-up)IA/T cannot perform lock-up
even if electrical circuit is good.Ð P0744*1
Ð A/T TCC S/V FNCTN
Shift solenoid valve AITCM detects an improper volt-
age drop when it tries to operate
the solenoid valve.X P0750
SHIFT SOLENOID/V
ASFT SOL A/CIRC
Shift solenoid valve BITCM detects an improper volt-
age drop when it tries to operate
the solenoid valve.X P0755
SHIFT SOLENOID/V
BSFT SOL B/CIRC
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-38

Item DisplayMonitor item
Description Remarks
TCM input
signalsMain sig-
nals
1 position switch 1 POSITION SW
[ON/OFF]
XÐION/OFF status, com-
puted from signal of 1
position SW, is dis-
played.
ASCD cruise signal ASCD-CRUISE
[ON/OFF]
XÐIStatus of ASCD cruise
signal is displayed.
ON ... Cruising state
OFF ... Normal running
stateIThis is displayed even
when no ASCD is
mounted.
ASCD OD cut signal ASCD-OD CUT
[ON/OFF]
XÐIStatus of ASCD OD
release signal is dis-
played.
ON ... OD released
OFF ... OD not releasedIThis is displayed even
when no ASCD is
mounted.
Kickdown switch KICKDOWN SW
[ON/OFF]
XÐION/OFF status, com-
puted from signal of
kickdown SW, is dis-
played.IThis is displayed even
when no kickdown
switch is equipped.
Closed throttle position
switchCLOSED
THL/SW
[ON/OFF]XÐION/OFF status, com-
puted from signal of
closed throttle position
SW, is displayed.
Wide open throttle position
switchW/O THRL/P-SW
[ON/OFF]
XÐION/OFF status, com-
puted from signal of
wide open throttle posi-
tion SW, is displayed.
Stop lamp switch BRAKE SW
[ON/OFF]
XÐION/OFF status is dis-
played.
ON ... Brake pedal is
depressed.
OFF ... Brake pedal is
released.
Gear position GEAR
ÐXIGear position data used
for computation by TCM,
is displayed.
Selector lever position SLCT LVR POSI
ÐXISelector lever position
data, used for computa-
tion by TCM, is dis-
played.IA specific value used for
control is displayed if
fail-safe is activated due
to error.
Vehicle speed VEHICLE
SPEED
[km/h] or [mph]ÐXIVehicle speed data,
used for computation by
TCM, is displayed.
Throttle position THROTTLE
POSI
[/8]ÐXIThrottle position data,
used for computation by
TCM, is displayed.IA specific value used for
control is displayed if
fail-safe is activated due
to error.
Line pressure duty LINE PRES DTY
[%]
ÐXIControl value of line
pressure solenoid valve,
computed by TCM from
each input signal, is dis-
played.GI
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-41

SAT014K
5. Touch ªA/Tº.
SAT971J
6. Touch ªDTC WORK SUPPORTº.
SAT018K
7. Touch select item menu (1ST, 2ND, etc.).
SAT589J
8. Touch ªSTARTº.
SAT019K
9. Perform driving test according to ªDTC CONFIRMATION PRO-
CEDUREº in ªTROUBLE DIAGNOSIS FOR DTCº.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-43

1 CHECK O/D OFF INDICATOR LAMP
1. Start the engine with selector lever in ªPº position. Warm engine to normal operating temperature.
2. Turn ignition switch to ªOFFº position.
3. Wait 5 seconds.
SAT967I
4. Turn ignition switch to ªONº position.
(Do not start engine.)
5. Does O/D OFF indicator lamp come on for about 2 seconds?
SAT133K
YesorNo
Ye s©GO TO 2.
No©Go to ª1. O/D OFF Indicator Lamp Does Not Come Onº, AT-218.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont'd)
AT-47

2 JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch to ªOFFº position.
2. Push shift lock release button.
3. Move selector lever from ªPº to ªDº position.
4. Turn ignition switch to ªONº position. (Do not start engine.)
5. Depress and hold overdrive control switch in ªOFFº position (the O/D OFF indicator lamp will be ªONº) until directed to
release the switch. (If O/D OFF indicator lamp does not come on, go to step 5 on AT-257.)
6. Turn ignition switch to ªOFFº position.
SAT968I
7. Turn ignition switch to ªONº position (Do not start engine.).
8. Release the overdrive control switch (the O/D OFF indicator lamp will be ªOFFº).
9. Wait 2 seconds.
10. Move selector lever to ª2º position.
11. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be ªONº).
12. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be ªOFFº) until directed to release the
switch.
SAT969I
©GO TO 3.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont'd)
AT-48

3 JUDGEMENT PROCEDURE STEP 2
1. Move selector lever to ª1º position.
2. Release the overdrive control switch.
3. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be ªONº).
4. Depress and release the overdrive control switch (the O/D OFF indicator lamp will be ªOFFº).
5. Depress and hold the overdrive control switch (the O/D OFF indicator lamp will be ªONº) until directed to release the
switch.
SAT970I
6. Depress accelerator pedal fully and release it.
7. Release the overdrive control switch (the O/D OFF indicator lamp will begin to flash ªONº and ªOFFº).
SAT981F
©GO TO 4.
4 CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp.
Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-50.
SAT133K
©DIAGNOSIS END
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Diagnostic Procedure Without CONSULT-II (Cont'd)
AT-49

SAT631IB
IntroductionNBAT0019
SAT632I
SEF234G
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 A/T 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
A/T 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 A/T system. The A/T 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-57.
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-55) 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.GI
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TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction
AT-53

DIAGNOSTIC WORKSHEET=NBAT0019S01Information From CustomerNBAT0019S0101KEY POINTS
WHAT..... Vehicle & A/T 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)
SymptomslVehicle does not move. (lAny positionlParticular position)
lNo up-shift (l1st,2ndl2nd,3rdl3rd,O/D)
lNo down-shift (lO/D,3rdl3rd,2ndl2nd,1st)
lLockup malfunction
lShift point too high or too low.
lShift shock or slip (lN,DlLockuplAny drive position)
lNoise or vibration
lNo kickdown
lNo pattern select
lOthers
()
O/D OFF indicator lamp Blinks for about 8 seconds.
lContinuously litlNot lit
Malfunction indicator lamp (MIL)lContinuously litlNot lit
TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction (Cont'd)
AT-54

4. 4-3. Cruise testAT-67
AT-71
Part-1
l8. Vehicle Cannot Be Started From D
1, AT-233.
l9. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-236.
l10. A/T Does Not Shift: D
2,D3, AT-239.
l11. A/T Does Not Shift: D
3,D4, AT-242.
l12. A/T Does Not Perform Lock-up, AT-245.
l13. A/T Does Not Hold Lock-up Condition, AT-247.
l14. Lock-up Is Not Released, AT-249.
l15. Engine Speed Does Not Return To Idle (Light Braking D
4,D3), AT-250.
Part-2AT-75
l16. Vehicle Does Not Start From D
1, AT-252.
l9. A/T Does Not Shift: D
1,D2Or Does Not Kickdown: D4,D2, AT-236.
l10. A/T Does Not Shift: D
2,D3, AT-239.
l11. A/T Does Not Shift: D
3,D4, AT-242.
Part-3AT-77
l17. A/T Does Not Shift: D
4,D3When Overdrive Control Switch ªONº,ªOFFº, AT-253
l15. Engine Speed Does Not Return To Idle (Engine Brake In D
3), AT-250.
l18. A/T Does Not Shift: D
3,22, When Selector Lever ªDº,ª2º Position, AT-254.
l15. Engine Speed Does Not Return To Idle (Engine Brake In 2
2), AT-250.
l19. A/T Does Not Shift: 2
2,11, When Selector Lever ª2º,ª1º Position, AT-255.
l20. Vehicle Does Not Decelerate By Engine Brake, AT-256.
lSELF-DIAGNOSTIC PROCEDURE Ð Mark detected items.
lDTC P0705 PNP switch, AT-99.
lDTC P0710 A/T fluid temperature sensor, AT-105.
lDTC P0720 Vehicle speed sensor´A/T (Revolution sensor), AT-111.
lDTC P0725 Engine speed signal, AT-116.
lDTC P0740 Torque converter clutch solenoid valve, AT-148.
lDTC P0745 Line pressure solenoid valve, AT-162.
lDTC P0750 Shift solenoid valve A, AT-168.
lDTC P0755 Shift solenoid valve B, AT-172.
lDTC P1705 Throttle position sensor, AT-176.
lDTC P1760 Overrun clutch solenoid valve, AT-185.
lDTC BATT/FLUID TEMP SEN (A/T fluid temperature sensor and TCM power source), AT-190.
lDTC Vehicle speed sensor´MTR, AT-197.
lDTC Turbine revolution sensor, AT-202.
lDTC A/T communication line, AT-207.
lDTC Control unit (RAM), control unit (ROM), AT-211.
lDTC Control unit (EEP ROM), AT-213.
lPNP, overdrive control and throttle position switches, AT-257.
lBattery
lOthers
5.lFor self-diagnosis NG items, inspect each component. Repair or replace the damaged parts. AT-38
6.lPerform all ROAD TEST and re-mark required procedures. AT-63
7.lPerform DTC CONFIRMATION PROCEDURE for following MIL indicating items and check out NG items.
Refer to EC-60, ªEmission-related Diagnostic Informationº.EC-60
lDTC (P0731, 1103) A/T 1st gear function, AT-120.
lDTC (P0732, 1104) A/T 2nd gear function, AT-126.
lDTC (P0733, 1105) A/T 3rd gear function, AT-132.
lDTC (P0734, 1106) A/T 4th gear function, AT-138.
lDTC (P0744, 1107) A/T TCC S/V function (lock-up), AT-153.
8.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-92
AT-97
9.lErase DTC from TCM and ECM memories. AT-35
TROUBLE DIAGNOSIS Ð INTRODUCTION
Introduction (Cont'd)
AT-56

A/T Fluid CheckNBAT0021FLUID LEAKAGE CHECKNBAT0021S011. 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 fresh leakage.
SAT638A
FLUID CONDITION CHECKNBAT0021S02
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pinkWater 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 CHECKNBAT0021S03Refer to MA-21, ªChecking A/T Fluidº.
SAT647B
Stall TestNBAT0022STALL TEST PROCEDURENBAT0022S011. Check A/T fluid and engine oil levels. If necessary, add fluid
and oil.
2. Drive vehicle for approx. 10 minutes or until fluid and oil reach
operating temperature.
ATF operating temperature:
50 - 80ÉC (122 - 176ÉF)
SAT513G
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 put a mark on point of specified
engine rpm on indicator.
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TROUBLE DIAGNOSIS Ð BASIC INSPECTION
A/T Fluid Check
AT-59