2003 NISSAN TEANA ENGINE CONTROL

AT-56
TROUBLE DIAGNOSIS

Shift ShockToo sharp a
shock in change
from D
2 to D3 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Line pressure testAT- 4 6
3. Control valve assemblyAT-225
OFF vehicle4. High clutchAT-3015. Brake bandAT-329
Too sharp a
shock in change
from D
3 to D4 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Line pressure testAT- 4 6
3. Control valve assemblyAT-225
OFF vehicle4. Brake bandAT-3295. Overrun clutchAT-307
6. Forward one-way clutchAT-319
Gear change
shock felt during
deceleration by
releasing acceler-
ator pedal.ON vehicle1. Accelerator pedal position sensor
EC-272*1, EC-652*2
2. Line pressure testAT- 4 6
3. Overrun clutch solenoid valveAT-100
4. Control valve assemblyAT-225
Large shock
changing from 1
2
to 1
1 in “1” posi-
tion.ON vehicle 1. Control valve assemblyAT-225OFF vehicle 2. Low & reverse brakeAT-315
Improper Shift
TimingToo high a gear
change point from
D
1 to D2 , from
D
2 to D3 , from
D
3 to D4 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Gear change
directly from D
1
to D
3 occurs.ON vehicle1. A/T fluid levelAT- 1 4
2. Accumulator servo releaseAT-225
OFF vehicle 3. Brake bandAT-329
Too high a
change point from
D
4 to D3 , from
D
3 to D 2 , from
D
2 to D1 .ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
Kickdown does
not operate when
depressing pedal
in D
4 within kick-
down vehicle
speed.ON vehicle1. Accelerator pedal position sensor
EC-272
*1, EC-652*2
2. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Kickdown oper-
ates or engine
overruns when
depressing pedal
in D
4 beyond
kickdown vehicle
speed limit.ON vehicle1. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0
, AT- 8 6
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Shift solenoid valve AAT- 9 0
4. Shift solenoid valve BAT- 9 5
Gear change
from 2
2 to 23 in
“2” position.ON vehicle1. PNP switchAT-161
2. A/T positionAT-215
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-61
D
E
F
G
H
I
J
K
L
MA
B
AT

Slips/Will Not
EngageRaces extremely
fast or slips in
changing from D
3
to D
2 when
depressing pedal. ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
5. Shift solenoid valve BAT- 9 5
6. Control valve assemblyAT- 2 2 5
OFF vehicle7. Brake bandAT- 3 2 98. High clutchAT- 3 0 1
Races extremely
fast or slips in
changing from D
4
or D
3 to D 1
when depressing
pedal.ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
5. Shift solenoid valve AAT- 9 0
6. Shift solenoid valve BAT- 9 5
7. Control valve assemblyAT- 2 2 5
OFF vehicle8. Forward clutchAT- 3 0 79. Forward one-way clutchAT- 3 1 9
10. Low one-way clutchAT- 2 5 5
Vehicle will not
run in any posi-
tion.ON vehicle1. A/T fluid levelAT- 1 4
2. A/T positionAT- 2 1 5
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
OFF vehicle5. Oil pumpAT- 2 7 5
6. High clutchAT- 3 0 1
7. Brake bandAT- 3 2 9
8. Low & reverse brakeAT- 3 1 5
9. Torque converterAT- 2 5 5
10. Parking componentsAT- 2 4 6
OthersEngine cannot be
started in “P” and
“N” positions.
AT-175
ON vehicle1. Ignition switch and starterPG-3
, SC-14 .
2. A/T positionAT- 2 1 5
3. PNP switchAT- 1 6 1
Engine starts in
positions other
than “P” and “N”.ON vehicle1. A/T positionAT- 2 1 5
2. PNP switchAT- 1 6 1
Transaxle noise
in “P” and “N”
positions.ON vehicle1. A/T fluid levelAT- 1 4
2. Line pressure testAT- 4 6
3. Accelerator pedal position sensor
EC-272*1, EC-652*2
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
OFF vehicle5. Oil pumpAT- 2 7 56. Torque converterAT- 2 5 5
Items Symptom Condition Diagnostic item Reference page

AT-62
TROUBLE DIAGNOSIS

OthersVehicle moves
when changing
into “P” position
or parking gear
does not disen-
gage when
shifted out of “P”
position.ON vehicle 1. A/T positionAT-215
OFF vehicle 2. Parking componentsAT-246
Vehicle runs in
“N” position.
AT- 1 7 6
ON vehicle1. PNP switchAT-1612. A/T positionAT-215
OFF vehicle3. Forward clutchAT-3074. Reverse clutchAT-296
5. Overrun clutchAT-307
Vehicle braked
when shifting into
“R” position.ON vehicle1. A/T fluid levelAT- 1 4
2. A/T positionAT-215
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT-126
5. Control valve assemblyAT-225
OFF vehicle6. High clutchAT-3017. Brake band AT-329
8. Forward clutchAT-307
9. Overrun clutchAT-307
Excessive creep. ON vehicle 1. Engine idle speed
EC-45*1, EC-387*2
Engine stops
when shifting
lever into “R”, “D”,
“3”, “2” and “1”.ON vehicle1. Engine idle speed
EC-45
*1, EC-387*2
2. A/T fluid levelAT- 1 4
3. Torque converter clutch solenoid valveAT-105
4. Control valve assemblyAT-225
OFF vehicle 5. Torque converterAT-255
Vehicle braked by
gear change from
D
1 to D2 .ON vehicle 1. A/T fluid levelAT- 1 4OFF vehicle2. Reverse clutchAT-2963. Low & reverse brakeAT-315
4. High clutchAT-301
5. Low one-way clutchAT-255
Vehicle braked by
gear change from
D
2 to D3 .ON vehicle 1. A/T fluid levelAT- 1 4OFF vehicle 2. Brake bandAT-329
Vehicle braked by
gear change from
D
3 to D4 .ON vehicle 1. A/T fluid levelAT- 1 4OFF vehicle2. Overrun clutchAT-3073. Forward one-way clutchAT-319
4. Reverse clutchAT-296
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-63
D
E
F
G
H
I
J
K
L
MA
B
AT

OthersMaximum speed
not attained.
Acceleration
poor.ON vehicle1. A/T fluid levelAT- 1 4
2. PNP switchAT- 1 6 1
3. 3rd position switchAT- 1 6 1
4. Accelerator pedal position sensor
EC-272*1, EC-652*2
5. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
6. Shift solenoid valve AAT- 9 0
7. Shift solenoid valve BAT- 9 5
8. Control valve assemblyAT- 2 2 5
OFF vehicle9. Reverse clutchAT- 2 9 6
10. High clutchAT- 3 0 1
11. Brake bandAT- 3 2 9
12. Low & reverse brakeAT- 3 1 5
13. Oil pumpAT- 2 7 5
14. Torque converterAT- 2 5 5
Transaxle noise
in “D”, “3”, “2”, “1”
and “R” positions.ON vehicle 1. A/T fluid levelAT- 1 4
OFF vehicle 2. Torque converterAT- 2 5 5
Engine brake
does not operate
in “1” position.ON vehicle1. PNP switchAT- 1 6 1
2. A/T positionAT- 2 1 5
3. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
4. Control valve assemblyAT- 2 2 5
5. Overrun clutch solenoid valveAT- 1 0 0
OFF vehicle6. Overrun clutchAT- 3 0 77. Low & reverse brakeAT- 3 1 5
Transaxle over-
heats.ON vehicle1. A/T fluid levelAT- 1 4
2. Engine idle speed
EC-45*1, EC-387*2
3. Accelerator pedal position sensor
EC-272*1, EC-652*2
4. Line pressure testAT- 4 6
5. Line pressure solenoid valveAT- 1 2 6
6. Control valve assemblyAT- 2 2 5
OFF vehicle7. Oil pumpAT- 2 7 5
8. Reverse clutchAT- 2 9 6
9. High clutchAT- 3 0 1
10. Brake bandAT- 3 2 9
11. Forward clutchAT- 3 0 7
12. Overrun clutchAT- 3 0 7
13. Low & reverse brakeAT- 3 1 5
14. Torque converterAT- 2 5 5
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
AT-69
D
E
F
G
H
I
J
K
L
MA
B
AT

CONSULT-II SETTING PROCEDURE
Refer to GI-34, "CONSULT-II Start Procedure" .
SELF-DIAGNOSTIC RESULT MODE
After performing AT- 7 6 , "Diagnostic Procedure Without CONSULT-II" , place check marks for results on the
AT- 3 8 , "
DIAGNOSTIC WORKSHEET" . Reference pages are provided following the items.
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.
Display shows malfunction experienced since the last erasing
operation.
Display Items List
BCIA0031E
Items (CONSULT-II screen terms) Malfunction is detected when... Reference page
CAN COMM CIRCUIT

When TCM is not transmitting or receiving CAN communication signal
for 2 second or more.AT- 1 3 3
VHCL SPEED SEN-A/T
TCM does not receive the proper voltage signal from the sensor.AT- 8 0
VHCL SPEED SEN-MTR
TCM does not receive the proper voltage signal from the sensor.AT- 8 6
TURBINE SENSOR
TCM does not receive proper voltage signal from sensorAT- 1 2 0
SHIFT SOLENOID/V A
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.AT- 9 0
SHIFT SOLENOID/V B
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.AT- 9 5
OVERRUN CLUTCH S/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.AT- 1 0 0
T/C CLUTCH SOL/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.AT- 1 0 5
BATT/FLUID TEMP SEN
TCM receives an excessively low or high voltage from the sensor.AT- 11 0
ENGINE SPEED SIG
TCM does not receive the proper voltage signal from the ECM.AT- 11 6
A/T 1ST GR FNCTN
A/T cannot be shifted to the 1st gear position even if electrical circuit is
good.AT- 1 3 6
A/T 2ND GR FNCTN
A/T cannot be shifted to the 2nd gear position even if electrical circuit is
good.AT- 1 4 0
A/T 3RD GR FNCTN
A/T cannot be shifted to the 3rd gear position even if electrical circuit is
good.AT- 1 4 3
A/T 4TH GR FNCTN
A/T cannot be shifted to the 4th gear position even if electrical circuit is
good.AT- 1 4 6
A/T TCC S/V FNCTN
A/T cannot perform lock-up even if electrical circuit is good.AT- 1 5 1
LINE PRESSURE S/V
TCM detects an improper voltage drop when it tries to operate the sole-
noid valve.AT- 1 2 6
CONTROL UNIT (RAM)
TCM memory (RAM) is malfunctioningAT- 1 5 6
CONTROL UNIT (ROM)
TCM memory (ROM) is malfunctioningAT- 1 5 7
No failure
(NO SELF DIAGNOSTIC FAILURE
INDICATED FURTHER TESTING
MAY BE REQUIRED)

No failure has been detected. —

TROUBLE DIAGNOSIS
AT-71
D
E
F
G
H
I
J
K
L
MA
B
AT

OVERDRIVE SW (ON/OFF) X —3rd position switch (Signal input with
CAN communication.)
PN POSI SW (ON/OFF) X —
R POSITION SW (ON/OFF) X —
D POSITION SW (ON/OFF) X —
2 POSITION SW (ON/OFF) X —
1 POSITION SW (ON/OFF) X —
ASCD-CRUISE (ON/OFF) X —
Signal input with CAN communication.
ASCD-OD CUT (ON/OFF) X —
KICKDOWN SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
CLOSED THL/SW (ON/OFF) X —
Signal input with CAN communication.
W/O THRL/P-SW (ON/OFF) X —
*SHIFT S/V A (ON/OFF) — —
Displays status of check signal (reinput
signal) for TCM control signal output.
Remains unchanged when solenoid
valves are open or shorted. *SHIFT S/V B (ON/OFF) — —
*OVERRUN/C S/V (ON/OFF) — —
HOLD SW (ON/OFF) X — Not mounted but displayed.
BRAKE SW (ON/OFF) X —Stop lamp switch (Signal input with CAN
communication.)
GEAR — XGear position recognized by the TCM
updated after gear-shifting
SLCT LVR POSI — XSelector lever position is recognized by
the TCM.
For fail-safe operation, the specific value
used for control is displayed.
VEHICLE SPEED (km/h) — X Vehicle speed recognized by the TCM.
THROTTLE POSI (0.0/8) — XDegree of opening for accelerator recog-
nized by the TCM
For fail-safe operation, the specific value
used for control is displayed.
LINE PRES DTY (%) — X
TCC S/V DUTY (%) — X
SHIFT S/V A (ON/OFF) — X
SHIFT S/V B (ON/OFF) — X
OVERRUN/C S/V (ON/OFF) — X
SELF-D DP LMP (ON/OFF) — X
TC SLIP RATIO (0.000) — —
TC SLIP SPEED (rpm) — —Difference between engine speed and
torque converter input shaft speed
Voltage (V) — —Displays the value measured by the volt-
age probe. Monitor item (Unit)SELECT MONITOR ITEM
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU

AT-100
OVERRUN CLUTCH SOLENOID VALVE

OVERRUN CLUTCH SOLENOID VALVEPFP:31940
DescriptionBCS0011G
Overrun clutch solenoid valve is activated by TCM in response to signals sent from PNP switch, 3rd position
switch, vehicle speed and ECM (throttle opening). Overrun clutch operation will then be controlled.
CONSULT-II Reference ValueBCS0011H
On Board Diagnosis LogicBCS0011I
Diagnostic trouble code “OVERRUN CLUTCH S/V” with CONSULT-II or 6th judgement flicker without CON-
SULT-II is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible CauseBCS0011J

Harness or connector
(Solenoid circuit is open or shorted.)

Overrun clutch solenoid valve
DTC Confirmation ProcedureBCS0011K
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
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 “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Accelerate vehicle to a speed of more than 10 km/h (6 MPH)
with selector lever in “D” position.
5. Release accelerator pedal completely with selector lever in 3rd
position.
6. If DTC is detected, go to AT- 1 0 2 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever position: “3” position
Vehicle speed: Higher than 10 km/h (6 MPH).
3. Perform self-diagnosis. Refer to AT- 7 6 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 1 0 2 , "
Diagnostic Procedure" .
Item name Condition Display value
OVERRUN/C S/VWhen overrun clutch solenoid valve operates. (When overrun
clutch disengaged.)ON
When overrun clutch solenoid valve does not operate. (When
overrun clutch engaged.)OFF
BCIA0031E

AT-118
ENGINE SPEED SIGNAL

Data are reference value and are measured between each terminal and ground.
Diagnostic ProcedureBCS0012A
1. CHECK DTC WITH ECM
Check DTC with CONSULT-II “ENGINE”.
Turn ignition switch ON and select “SELF-DIAGNOSTIC RESULTS” mode for “ENGINE” with CONSULT-II.
Refer to EC-425, "
CONSULT-II Function (ENGINE)" .
OK or NG
OK >> GO TO 2.
NG >> Check ignition signal circuit for engine control. Refer to EC-735
.
2. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “ENGINE SPEED”.
Check engine speed changes according to throttle position.
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM harness connector terminal and
ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
Terminal Wire color Item Condition Judgement standard (Approx.)
39 W/L Engine speed signal Refer to EC-72
(QR engine) or EC-415 (VQ engine)
Item name Condition Display value
ENGINE SPEED Engine runningApproximately matches the
tachometer reading.
SCIA4730E
Item Connector Terminal ConditionJudgement standard
(Approx.)
TCM con-
nectorF105 39 - GroundRefer to EC-72
(QR engine) or EC-415
(VQ engine)
SCIA3265E