transmission NISSAN TEANA 2003 Owners Manual

DTC P0868 SECONDARY PRESSURE DOWN
CVT-131
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DTC P0868 SECONDARY PRESSURE DOWNPFP:31941
DescriptionBCS001KG
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure
to suit the driving condition in response to a signal sent from the TCM.
CONSULT-II Reference ValueBCS001KH
Remarks: Specification data are reference values.
On Board Diagnosis LogicBCS001KI
Diagnostic trouble code “P0868 SEC/PRESS DOWN” with CONSULT-II is detected when secondary fluid
pressure is too low compared with the commanded value while driving.
Possible CauseBCS001KJ

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

Pressure control solenoid valve B (Secondary pressure solenoid valve) system

Transmission fluid pressure sensor A (Secondary pressure sensor)

Line pressure control system
DTC Confirmation ProcedureBCS001KK
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2. Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
3. Start engine and maintain the following conditions for at least 10
consecutive seconds.
VEHICLE SPEED (accelerate slowly): 0 → 50 km/h (31 MPH)
ACC PEDAL OPEN: 0.5/8 - 1.0/8
RANGE: “D” position
4. If DTC is detected, go to CVT-132, "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
SEC PRESS “N” position idle 0.5 MPa
BCIA0031E

CVT-132
DTC P0868 SECONDARY PRESSURE DOWN

Diagnostic ProcedureBCS001KL
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
3. Start vehicle and read out the value of “SEC PRESS”.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-33, "
LINE PRESSURE
TEST" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts. Refer to CVT-34,
"Judgement of Line Pressure Test" .
3. DETECT MALFUNCTIONING ITEM
Check the following:

Pressure control solenoid valve B (Secondary pressure solenoid valve). Refer to CVT-112, "Component
Inspection" .

Pressure control solenoid valve A (Line pressure solenoid valve). Refer to CVT-101, "Component Inspec-
tion" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to CVT-118, "
DTC
P0840 TRANSMISSION FLUID PRESSURE SENSOR A CIRCUIT (SEC PRESSURE SENSOR)" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Item name Condition Display value (Approx.)
SEC PRESS “N” position idle 0.5 MPa
SCIA2366E
SAT494G

CVT-134
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)

DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)PFP:31036
DescriptionBCS001KM
When the power supply to the TCM is cut OFF, for example because the battery is removed, and the self-diag-
nosis memory function stops, malfunction is detected.
NOTE:
Since “P1701 TCM-POWER SUPPLY” will be indicated when replacing TCM, perform diagnosis after
erasing “SELF-DIAG RESULTS”
On Board Diagnosis LogicBCS001KN

Diagnostic trouble code “P1701 TCM-POWER SUPPLY” with CONSULT-II is detected when TCM does
not receive the voltage signal from the battery power supply.

This is not a malfunction message. (Whenever shutting OFF a power supply to the TCM, this message
appears on the screen.)
Possible CauseBCS001KO
Harness or connectors
(Battery or ignition switch and TCM circuit is open or shorted.)
DTC Confirmation ProcedureBCS001KP
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
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 “TRANSMISSION” with
CONSULT-II.
3. Wait for at least 2 consecutive seconds.
4. If DTC is detected, go to CVT-136, "
Diagnostic Procedure" .
BCIA0031E

DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
CVT-135
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Wiring Diagram — CVT — POWERBCS001KQ
TCWM0542E

CVT-136
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)

TCM terminals data are reference values, measured between each terminal and ground.
Diagnostic ProcedureBCS001KS
1. CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION”
with CONSULT-II.
3. Erase self-diagnostic results. Refer to CVT-49, "
How to Erase
Self-diagnostic Results" .
4. Turn ignition switch OFF, and wait for 5 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-47, "
SELF-
DIAGNOSTIC RESULT MODE" .
Is the
“P1701 TCM-POWER SUPPLY” displayed?
YES >> GO TO 2.
NO >>INSPECTION END
2. CHECK TCM POWER SOURCE, STEP 1
1. Turn ignition switch OFF.
2. Check voltage between TCM connector terminal and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
Terminal Wire color Item Condition Data (Approx.)
10 Y Power supply— Battery voltage
—0 V
19 Y Power supply— Battery voltage
—0 V
25 B Ground Always 0 V
28 Y/RPower supply
(memory back-up)Always Battery voltage
48 B Ground Always 0 V
BCIA0031E
Name Connector Terminal ConditionVoltage
(Approx.)
Power supply
(memory back-up)F107 28 - Ground AlwaysBattery
voltage
SCIA4783E

DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
CVT-137
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CVT

3. CHECK TCM POWER SOURCE, STEP 2
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING ITEM
Check the following.

Harness for short or open between battery and TCM connector terminal 28

Harness for short or open between ignition switch and TCM connector terminal 10, 19

10A fuse (No.83, located in the IPDM E/R)

15A fuse (No.17, located in the fuse block)

Ignition switch. Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check continuity between TCM connector terminals and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
Name Connector Terminal ConditionVoltage
(Approx.)
Power supply
F10610 - GroundBattery
voltage
0 V
Power supply 19 - GroundBattery
voltage
0 V
Power supply
(memory back-up)F107 28 - Ground AlwaysBattery
voltage
SCIA4784E
Name Connector Terminal Continuity
Ground F10725
Ye s
48
SCIA2671E

CVT-138
DTC P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)

6. CHECK DTC
Check again. Refer to CVT-136, "
Diagnostic Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7. CHECK TCM
1. Check TCM input/output signal. Refer to CVT-40, "
TCM Input/Output Signal Reference Values" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.

DTC P1705 THROTTLE POSITION SENSOR
CVT-139
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DTC P1705 THROTTLE POSITION SENSORPFP:22620
DescriptionBCS001KT
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN
communication.
CONSULT-II Reference ValueBCS001KU
Remarks: Specification data are reference values.
On Board Diagnosis LogicBCS001KV
Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-II is detected when TCM does not receive
the proper accelerator pedal position signals (input by CAN communication) from ECM.
Possible CauseBCS001KW

ECM

Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureBCS001KX
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
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 “TRANSMISSION” with
CONSULT-II.
3. Depress accelerator pedal fully and release it, then wait for 5
seconds.
4. If DTC is detected, go to CVT-140, "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
ACC PEDAL OPEN Released accelerator pedal - Fully depressed accelerator pedal 0.0/8 - 8.0/8
BCIA0031E

CVT-140
DTC P1705 THROTTLE POSITION SENSOR

Diagnostic ProcedureBCS001KY
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CVT-47, "
SELF-DIAGNOSTIC RESULT MODE" .
Is any malfunction of the
“U1000 CAN COMM CIRCUIT” indicated?
YES >> Check the CAN communication line. Refer to CVT-53, "DTC U1000 CAN COMMUNICATION
LINE" .
NO >> GO TO 2.
2. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
3. Read out the value of “ACC PEDAL OPEN”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to EC-427, "
SELF-DIAG RESULTS MODE" .
OK or NG
OK >> GO TO 4.
NG >> Check the DTC Detected Item. Go to EC-427, "
SELF-
DIAG RESULTS MODE" .
4. CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to CVT-139, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item name Condition Display value (Approx.)
ACC PEDAL OPENReleased accelerator
pedal
↓
Fully depressed accelera-
tor pedal0.0/8
↓
8.0/8
SCIA2277E
BCIA0030E

DTC P1722 ESTM VEHICLE SPEED SIGNAL
CVT-141
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DTC P1722 ESTM VEHICLE SPEED SIGNALPFP:47660
DescriptionBCS001KZ
The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN com-
munication line.
CONSULT-II Reference ValueBCS001L0
Remarks: Specification data are reference values.
On Board Diagnosis LogicBCS001L1
Diagnostic trouble code “P1722 ESTM VEH SPD SIG” with CONSULT-II is detected when TCM does not
receive the proper vehicle speed signal (input by CAN communication) from ABS actuator and electric unit
(control unit).
Possible CauseBCS001L2

Harness or connectors
(Sensor circuit is open or shorted.)

ABS actuator and electric unit (control unit)
DTC Confirmation ProcedureBCS001L3
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
ACC PEDAL OPEN: 1.0/8 or less
VEHICLE SPEED: 30 km/h (17 MPH) or more
4. If DTC is detected, go to CVT-142, "
Diagnostic Procedure" .
Item name Condition Display value
ESTM VSP SIG
During driving Approximately matches the speedometer reading
VEHICLE SPEED
BCIA0031E