2003 NISSAN TEANA accelerator

TROUBLE DIAGNOSIS
AT-67
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CONSULT-II Function (A/T) BCS0010D
CONSULT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-II at the start of shifting. Gear position is dis-
played upon completion of shifting (which is computed by TCM).
CONSULT-II REFERENCE VALUE
Diagnostic test mode Function Reference page
Work supportThis mode enables a technician to adjust some devices faster and more accurately by
following the indications on CONSULT-II.—
Self-diagnostic results Self-diagnostic results can be read and erased quickly.AT- 6 9
Data monitor Input/Output data in the ECM can be read.AT- 7 0
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read.AT- 7 2
Function testPerformed by CONSULT-II instead of a technician to determine whether each system
is “OK” or “NG”.—
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.AT- 7 2
TCM part number TCM part number can be read. —
Item name Condition Display value (Approx.)
VHCL/S SE-A/T
During drivingApproximately matches the speedometer
reading.
VHCL/S SE-MTR
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
FLUID TEMP SE When ATF temperature is 20°C (68°F). 1.5 V
When ATF temperature is 80°C (176°F). 0.5 V
BATTERY VOLT When turning ignition switch to ON. Battery voltage
ENGINE SPEED Engine runningApproximately matches the tachometer
reading.
TURBINE REV During driving (lock-up ON) Approximately matches the engine speed.
OVERDRIVE SWWhen setting selector lever to “3” and “2” posi-
tions.ON
When setting selector lever to other positions. OFF
PN POSI SWWhen setting selector lever to “N” or “P” posi-
tion.ON
When setting selector lever to other positions. OFF
R POSITION SWWhen setting selector lever to “R” position. ON
When setting selector lever to other positions. OFF

AT-68
TROUBLE DIAGNOSIS

D POSITION SWWhen setting selector lever to “D” and “3” posi-
tions.ON
When setting selector lever to other positions. OFF
2 POSITION SWWhen setting selector lever to “2” position. ON
When setting selector lever to other positions. OFF
1 POSITION SWWhen setting selector lever to “1” position. ON
When setting selector lever to other positions. OFF
CLOSED THL/SWReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THRL/P-SWFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
SHIFT S/V AWhen shift solenoid valve A operates.
(When driving in “D
1 ” or “D4 ”.)ON
When shift solenoid valve A does not operate.
(When driving in “D
2 ” or “D3 ”.)OFF
SHIFT S/V BWhen shift solenoid valve B operates.
(When driving in “D
1 ” or “D2 ”.)ON
When shift solenoid valve B does not operate.
(When driving in “D
3 ” or “D4 ”.)OFF
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
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
GEAR During driving 1, 2, 3, 4
SLCT LVR POSIWhen setting selector lever to “N” or “P” posi-
tion.N·P
When setting selector lever to “R” position. R
When setting selector lever to “D” and “3” posi-
tions.D
When setting selector lever to “2” position. 2
When setting selector lever to “1” position. 1
VEHICLE SPEED During drivingApproximately matches the speedometer
reading.
LINE PRES DTYSmall throttle opening (Low line pressure) ⇔
Large throttle opening (High line pressure)0% ⇔ 92%
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4% ⇔ 94% Item name Condition Display value (Approx.)

TROUBLE DIAGNOSIS
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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-76
TROUBLE DIAGNOSIS

Diagnostic Procedure Without CONSULT-IIBCS0010E
TCM SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
Description
If a malfunction occurs in electrical system, check the self-diagnostic result after confirming A/T CHECK indi-
cator lamp works. To detect a malfunction, entering a self-diagnosis start signal retrieves information on mal-
functions from memory and indicates malfunction by blinking A/T CHECK indicator lamp.
Diagnostic Procedure
1. CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
Start engine and warm it up to normal engine operating temperature.
3. Turn ignition switch OFF.
4. Wait 5 seconds.
5. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> Stop procedure. Perform AT- 1 7 3 , "
A/T CHECK Indicator Lamp Does Not Come On" before pro-
ceeding.
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch OFF.
2. Push and hold shift lock release button.
3. Depress the brake pedal, then move gear selector lever from “P” to “3” position.
4. Turn ignition switch ON. (Do not start engine.)
5. Wait 3seconds.
6. Move selector lever to “2” position.
7. Release brake pedal.
8. Move selector lever to “1” position.
9. Depress brake pedal.
10. Depress accelerator.
11. The A/T CHECK indicator lamp will begin to flash.
>> GO TO 3.
3. CHECK SELF-DIAGNOSTIC CODE
Check A/T CHECK indicator lamp. Refer to AT- 7 7 , "
Judgement of Self-Diagnosis Code" .
>>DIAGNOSIS END

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

TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-105
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TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionBCS0011O
Torque converter clutch solenoid valve is activated, with the gear in D4 , D3 and 33 , by TCM in response to
signals sent from vehicle speed and the ECM (throttle opening). Lock-up piston operation will then be con-
trolled.
Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
When the accelerator pedal is depressed (less than 2.0/8) in lock-up condition, the engine speed should not
change abruptly. If there is a big jump in engine speed, there is no lock-up.
CONSULT-II Reference ValueBCS0011P
On Board Diagnosis LogicBCS0011Q
Diagnostic trouble code “T/C CLUTCH SOL/V” with CONSULT-II or 7th judgement flicker without CONSULT-II
is detected when TCM detects an improper voltage drop when it tries to operate solenoid valve.
Possible CauseBCS0011R

Torque converter clutch solenoid valve

Harness or connector
(Solenoid circuit is open or shorted.)
DTC Confirmation ProcedureBCS0011S
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 that 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 and
wait at least 1 second.
3. Start engine and maintain the following condition for at least 5
consecutive seconds.
VEHICLE SPEED: 80 km/h (50 MPH) or more
THROTTLE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
4. If DTC is detected, go to AT- 1 0 7 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 → D3 → D4 → D4 lock-up position.
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 7 , "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4% ⇔ 94%
BCIA0031E

AT-126
LINE PRESSURE SOLENOID VALVE

LINE PRESSURE SOLENOID VALVEPFP:31940
DescriptionBCS0012I
Line pressure solenoid valve regulates oil pump discharge pressure to suit the driving condition in response to
a signal sent from TCM.
The line pressure duty cycle value is not consistent when the closed throttle position switch is ON. To
confirm the line pressure duty cycle at low-pressure, accelerator (throttle) should be open until the
closed throttle position switch is “OFF”.
CONSULT-II Reference ValveBCS0026L
On Board Diagnosis LogicBCS0012J
Diagnostic trouble code “LINE PRESSURE S/V” with CONSULT-II or 11th judgement flicker without CON-
SULT-II is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible CauseBCS0012K

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

Line pressure solenoid valve
DTC Confirmation ProcedureBCS0012L
CAUTION:
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 that 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. Depress accelerator pedal completely and wait at least 1 sec-
ond.
4. If DTC is detected, go to AT- 1 2 9 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. With brake pedal depressed, shift the lever from “P” → “N” → “D” → “N” → “P” positions.
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 2 9 , "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
LINE PRES DTYSmall throttle opening (Low line pressure) ⇔ Large throttle opening
(High line pressure)0% ⇔ 92%
BCIA0031E

A/T 1ST GEAR FUNCTION
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DTC Confirmation ProcedureBCS00134
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.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm that the malfunction is eliminated.
WITH CONSULT-II
1. Start engine and select “DATA MONITOR” mode for “A/T” with
CONSULT-II.
2. Make sure that output voltage of A/T fluid temperature sensor is
within the range below.
FLUID TEMP SE: 0.4 - 1.5 V
If out of range, drive vehicle to decrease the voltage (warm up
the fluid) or stop engine to increase the voltage (cool down the
fluid).
3. Select “1ST GR FNCTN P0731” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 20 to 25 km/h (12 to 16 MPH) under the following condition and release accelerator
pedal completely.
THROTTLE POSI: Less than 1.0/8 (at all times during step 4)
SLCT LVR POSI: “D” position
–Make sure that “GEAR” shows “2” after releasing pedal.
5. Depress accelerator pedal to WOT (more than 7.0/8 of “THROTTLE POSI”) quickly from a speed of 20 to
25 km/h (12 to 16 MPH) until “TESTING” changes to “STOP VEHICLE” or “COMPLETED”. (It will take
approximately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to AT- 1 3 8 , "
Diagnostic Procedure" .
If “STOP VEHICLE” appears on CONSULT-II screen, go to the following step.
–Make sure that “GEAR” shows “1” when depressing accelerator pedal to WOT.
–If “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAG RESULTS” for
“A/T”. In case a 1st trip DTC other than “A/T 1ST GR FNCTN” is shown, refer to applicable “TROU-
BLE DIAGNOSIS FOR DTC”.
6. Stop vehicle.
7. Follow the instruction displayed. (Check for normal shifting referring to the table below.)
8. Make sure that “OK” is displayed. (If “NG” is displayed, refer to AT- 1 3 8 , "
Diagnostic Procedure" .)
Refer to AT- 5 4 , "
Vehicle Speed Which Gear Shifting Occurs" .
BCIA0031E
Vehicle condition Gear on actual transmission shift pattern when screen is changed to 1 → 2 → 3 → 4
No malfunction exists. 1 → 2 → 3 → 4
Malfunction for “A/T 1ST GR
FNCTN ” exists.2 → 2 → 3 → 3
4 → 3 → 3 → 4