NISSAN ALMERA N16 2003 Electronic Repair Manual

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-265
[EXC.F/EURO-OBD]
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Line Pressure TestECS007QT
LINE PRESSURE TEST PORTS
Location of line pressure test ports are shown in the illustration.
●Always replace pressure plugs as they are self-sealing
bolts.
LINE PRESSURE TEST PROCEDURE
1. Check A/T fluid and engine oil levels. If necessary, add fluid or
oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and AT F
reach operating temperature.
3. Install pressure gauge to corresponding line pressure port.
4. Set parking brake and block wheels.
●Continue 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.
●When measuring line pressure at stall speed, follow the
stall test procedure.
Line pressure: Refer to AT- 5 1 5 , "
SERVICE DATA AND SPECIFI-
CATIONS (SDS)" .
SAT561J
ATF operating temperature: 50 - 80°C (122 -176°F)
SAT647B
UAT008
SAT493G

AT-266
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
JUDGEMENT OF LINE PRESSURE TEST
Road TestECS007QU
DESCRIPTION
●The purpose of the test is to determine overall performance of A/
T and analyze causes of problems.
●The road test consists of the following three parts:
1. Check before engine is started
2. Check at idle
3. Cruise test
●Before road test, familiarize yourself with all test procedures and
items to check.
●Conduct tests on all items until specified symptom is found.
Troubleshoot items which check out No Good after road test.
Refer to the following items.
Judgement Suspected parts
At idleLine pressure is low in all positions.
●Oil pump wear
●Control piston damage
●Pressure regulator valve or plug sticking
●Spring for pressure regulator valve damaged
●Fluid pressure leakage between oil strainer and pressure regulator valve
●Clogged strainer
Line pressure is low in particular posi-
tion.
●Fluid pressure leakage between manual valve and particular clutch
●For example, line pressure is:
− Low in “R” and “1” positions, but
− Normal in “D” and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 1 8 , "
CLUTCH AND BAND CHART" .
Line pressure is high.
●Maladjustment of throttle position sensor
●A/T fluid temperature sensor damaged
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure modifier valve sticking
●Pressure regulator valve or plug sticking
●Open in dropping resistor circuit
At stall
speedLine pressure is low.
●Maladjustment of throttle position sensor
●Line pressure solenoid valve sticking
●Short circuit of line pressure solenoid valve circuit
●Pressure regulator valve or plug sticking
●Pressure modifier valve sticking
●Pilot valve sticking
SAT786A
SAT496G

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-267
[EXC.F/EURO-OBD]
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ON BOARD DIAGNOSTIC SYS-
TEM DESCRIPTIONTROUBLE DIAGNOSES FOR
SYMPTOMS
Except for
Euro-OBD AT-244, "
ON BOARD DIAG-
NOSTIC SYSTEM DESCRIP-
TION" to AT- 2 5 0 , "Diagnostic
Procedure Without CONSULT-
II"
AT- 3 0 9 , "1. O/D OFF Indicator
Lamp Does Not Come On" to AT-
333, "21. TCM Self-diagnosis
Does Not Activate (PNP & Over-
drive Control Switches, and
Throttle Position Sensor Circuit
Checks)"

AT-268
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
1. CHECK BEFORE ENGINE IS STARTED
1. CHECK O/D OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” position.
4. Set overdrive control switch to “ON” position.
5. Turn ignition switch to “ON” position. (Do not start engine.)
6. Does O/D OFF indicator lamp come on for about 2 seconds?
Ye s o r N o
Yes >> GO TO 2
No >> Stop ROAD TEST. GO TO AT- 3 0 9 , "
1. O/D OFF Indica-
tor Lamp Does Not Come On" .
2. CHECK O/D OFF INDICATOR LAMP
Does O/D OFF indicator lamp flicker for about 8 seconds?
Ye s o r N o
Yes >> Perform self-diagnosis and check NG items on the
DIAGNOSTIC WORKSHEET. Refer to AT- 2 5 6
and AT-
250, "SELF-DIAGNOSTIC PROCEDURE (WITHOUT
CONSULT-II)" .
No >> 1. Turn ignition switch to “OFF” position.
2. Perform self-diagnosis and note NG items.
Refer to AT- 2 5 0 , "
SELF-DIAGNOSTIC PROCEDURE
(WITHOUT CONSULT-II)" .
3. GO TO AT-269, "
2. CHECK AT IDLE" .
SAT774B
MCIA3103E
MCIA3103E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-269
[EXC.F/EURO-OBD]
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2. CHECK AT IDLE
1.CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch to “OFF” position.
3. Move selector lever to “P” or “N” position.
4. Turn ignition switch to “START” position.
5. Is engine started?
Ye s o r N o
Ye s > > G O T O 2
No >>
●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 0 9 , "2. Engine Cannot Be Started In “P”
and “N” Position" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
2.CHECK ENGINE START
1. Turn ignition switch to “OFF” position.
2. Move selector lever to “D”, “1”, “2” or “R” position.
3. Turn ignition switch to “START” position.
4. Is engine started?
Ye s o r N o
Ye s > >●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 0 9 , "2. Engine Cannot Be Started In “P”
and “N” Position" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
No >> GO TO 3
3.CHECK VEHICLE MOVE
1. Turn ignition switch to “OFF” position.
2. Move selector lever to “P” position.
3. Release parking brake.
4. Push vehicle forward or backward.
5. Does vehicle move when it is pushed forward or backward?
Ye s o r N o
Ye s > >●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 1 0 , "3. In “P” Position, Vehicle Moves
Forward Or Backward When Pushed" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
No >> GO TO 4
SAT769B
SAT770B
SAT768B
SAT796A

AT-270
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Move selector lever to “N” position.
3. Turn ignition switch to “START” position and start engine.
4. Release parking brake.
5. Does vehicle move forward or backward?
Ye s o r N o
Ye s > >●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT-311, "4. In “N” Position, Vehicle Moves" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
No >> GO TO 5
5. CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
3. Is there large shock when changing from “N” to “R” position?
Ye s o r N o
Ye s > >●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 1 2 , "5. Large Shock. “N”→“R” Position" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
No >> GO TO 6
6. CHECK VEHICLE MOVE
1. Release foot brake for several seconds.
2. Does vehicle creep backward when foot brake is released?
Ye s o r N o
Yes >> GO TO 7
No >>
●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 1 3 , "6. Vehicle Does Not Creep Back-
ward In “R” Position" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
SAT771B
SAT797A
SAT772B
SAT799A

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-271
[EXC.F/EURO-OBD]
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7.CHECK VEHICLE MOVE
1. Move selector lever to “D”, “2” and “1” positions and check if
vehicle creeps forward.
2. Does vehicle creep forward in all three positions?
Ye s o r N o
Ye s > > G O T O AT- 2 7 1 , "3. CRUISE TEST" .
No >>
●Mark the box on the DIAGNOSTIC WORKSHEET.
●GO TO AT- 3 1 6 , "7. Vehicle Does Not Creep Forward
In “D”,“2” Or “1” Position" .
●Continue ROAD TEST. Refer to AT-266, "Road Test" .
3. CRUISE TEST
●Check all items listed in Parts 1 through 3.
With CONSULT-II
●Using CONSULT-II, conduct a cruise test and record the result.
●Print the result and ensure that shifts and lock-ups take place as per Shift Schedule.
CONSULT-II Setting Procedure
1. Turn ignition switch “OFF”.
2. Connect CONSULT-II to data link connector, which is located in
left side lower dash panel.
3. Turn ignition switch “ON”.
4. Touch “START (NISSAN BASED VHCL)”.
SAT773B
SAT601J
MCIB9002E
MBIB0233E

AT-272
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
5. Touch “A/T”.
6. Touch “DATA MONITOR”.
7. Touch “MAIN SIGNALS” or “TCM INPUT SIGNALS”.
8. Select “Numerical Display”, “Barchart Display” or “Line Graph
Display”.
9. Touch “SETTING” to recording condition (“AUTO TRIG” or
“MANU TRIG”) and touch “BACK”.
10. Touch “Start”.
SAT014K
SAT971J
SAT175K
SAT973J

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-273
[EXC.F/EURO-OBD]
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11. When performing cruise test, touch “RECORD”.
12. After finishing cruise test part 1, touch “STOP”.
13. Touch “STORE” and touch “BACK”.
SAT134K
SAT135K
SAT987J
SAT974J

AT-274
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — BASIC INSPECTION
14. Touch “DISPLAY”.
15. Touch “PRINT”.
16. Check the monitor data printed out.
17. Continue cruise test part 2 and 3.
Without CONSULT-II
●Throttle position sensor can be checked by voltage across termi-
nals 41 and 42 of TCM.
SAT975J
SCIA0710E