2003 NISSAN TEANA Unified meter and

EC-240
[QR]
DTC P1706 PNP SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureBBS005GY
1. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector M42.
3. Turn ignition switch ON.
4. Check voltage between “unified meter and A/C amp.” terminals
32, 33 and ground with CONSULT-II or tester under the follow-
ing conditions.
OK or NG
OK >> GO TO 8.
NG >> GO TO 2.
2. CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 3 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
102 G/W PNP switch[Ignition switch: ON]

Shift lever: P or NApproximately 0V
[Ignition switch: ON]

Except above positionBATTERY VOLTAGE
(11 - 14V)
Condition (Shift position)Voltage
Te r m i n a l 3 2 Te r m i n a l 3 3
P positionBATTERY VOLTAGE
(11 - 14V)Approximately 0 V
N position Approximately 0 VBATTERY VOLTAGE
(11 - 14V)
Except the above position Approximately 0 V Approximately 0 V
PBIB1675E
Voltage: Battery voltage
PBIB1881E

DTC P1706 PNP SWITCH
EC-241
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3. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M55, F102

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between PNP switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Check harness continuity between PNP switch terminal 7 and “unified meter and A/C amp.” terminal 32,
PNP switch terminal 9 and “unified meter and A/C amp.” terminal 33.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F102, M55

Harness for open or short between PNP switch and “unified meter and A/C amp.”
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK PNP SWITCH
Refer to AT- 1 6 6 , "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace PNP switch.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-105, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
8. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 102 and “unified meter and A/C amp.” terminal 25.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.Continuity should exist.
Continuity should exist.

EC-242
[QR]
DTC P1706 PNP SWITCH

9. CHECK INTERMITTENT INCIDENT
Refer to EC-105, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 10.
NG >> Repair or replace.
10. REPLACE UNIFIED METER AND A/C AMP.
Refer to DI-27, "
UNIFIED METER AND A/C AMP" .
>>INSPECTION END

DTC P1720 VSS
EC-243
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DTC P1720 VSSPFP:31036
DescriptionBBS005GZ
NOTE:
If DTC P1720 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-113, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from “Unified meter
and A/C amp.”, and the other is from TCM (Transmission control module). ECM uses these two signals for
engine control.
CONSULT-II Reference Value in Data Monitor ModeBBS005H0
Specification data are reference values.
On Board Diagnosis LogicBBS005H1
The MI will not light up for this diagnosis.
DTC Confirmation ProcedureBBS005H2
CAUTION:
Always drive vehicle at a safe speed.
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine.
4. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at
least 5 seconds without brake pedal depressing.
5. If 1st trip DTC is detected, go to EC-244, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depress-
ing.
3. Stop the vehicle.
MONITOR ITEM CONDITION SPECIFICATION
VEHICLE SPEED

Turn drive wheels and compare CONSULT-II value with the speedome-
ter indication.Almost the same speed as the
speedometer indication
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1720
1720Vehicle speed sensor
(A/T output)ECM detects a difference between two
vehicle speed sensor signals is out of the
specified range.

Harness or connectors
(The CAN communication line is open or
shorted)

Harness or connectors
(Revolution sensor circuit is open or shorted)

Harness or connectors
(Wheel sensor circuit is open or shorted.)

TCM

ABS actuator and electric unit (control unit)

Unified meter and A/C amp.
SEF058Y

DTC P1574 ASCD VEHICLE SPEED SENSOR
EC-611
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DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
Component DescriptionBBS0053U
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from “unified
meter and A/C amp.” and the other is from TCM (Transmission control module). The ECM uses these signals
for ASCD control. Refer to EC-363, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for ASCD functions.
On Board Diagnosis LogicBBS0053V
This self-diagnosis has the one trip detection logic.
The MI will not light up for this diagnosis.
NOTE:

If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-458, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-538, "
DTC P0605 ECM"
DTC Confirmation ProcedureBBS0053W
CAUTION:
Always drive vehicle at a safe speed.
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.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. If DTC is detected, go to EC-612, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
TESTING CONDITION:
Step 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
1. Start engine.
2. Drive the vehicle at more than 40 km/h (25 MPH).
3. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
4. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P1574
1574ASCD vehicle speed
sensorECM detects a difference between two vehicle
speed signals is out of the specified range.

Harness or connectors
(The CAN communication line is open or
shorted.)

Unified meter and A/C amp.

ABS actuator and electric unit (control unit)

Wheel sensor

TCM

ECM
SEF058Y

EC-612
[VQ]
DTC P1574 ASCD VEHICLE SPEED SENSOR

5. If DTC is detected, go to EC-612, "Diagnostic Procedure" .
Diagnostic ProcedureBBS0053X
1. CHECK DTC WITH TCM
Check DTC with TCM. Refer to AT- 3 4 , "
TROUBLE DIAGNOSIS" .
OK or NG
OK >> GO TO 2.
NG >> Perform trouble shooting relevant to DTC indicated.
2. CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-8, "
TROUBLE DIAGNOSIS" or BRC-44, "TROUBLE DIAGNOSIS" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK DTC WITH UNIFIED METER AND A/C AMP.
Refer to DI-27, "
UNIFIED METER AND A/C AMP" .
>>INSPECTION END

EC-614
[VQ]
DTC P1706 PNP SWITCH

DTC P1706 PNP SWITCHPFP:32006
Component DescriptionBBS0053Y
When the gear position is P or N, park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-II Reference Value in Data Monitor ModeBBS0053Z
Specification data are reference values.
On Board Diagnosis LogicBBS00540
Overall Function CheckBBS00541
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to EC-618, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 102 (PNP switch signal)
and ground under the following conditions.
3. If NG, go to EC-618, "
Diagnostic Procedure" .
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW

Ignition switch: ONShift lever: P or N ON
Shift lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1706
1706Park/neutral position
switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of engine
starting and driving.

Harness or connectors
[The park/neutral position (PNP) switch
circuit is open or shorted.]

Park/neutral position (PNP) switch

Unified meter and A/C amp.
Position (Shift lever) Known-good signal
P or N position ON
Except above OFF
SEF212Y
Position (Shift lever) Voltage V (Known-good data)
P or N position Approx. 0
Except aboveBATTERY VOLTAGE
(11 - 14V)
MBIB0043E

EC-618
[VQ]
DTC P1706 PNP SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureBBS00543
A/T MODELS
1. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector M42.
3. Turn ignition switch ON.
4. Check voltage between “unified meter and A/C amp.” terminals
32, 33 and ground with CONSULT-II or tester under the follow-
ing conditions.
OK or NG
OK >> GO TO 8.
NG >> GO TO 2.
2. CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 3 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
102 G/W PNP switch[Ignition switch: ON]

Shift lever: N or PApproximately 0V
[Ignition switch: ON]

Except above positionBATTERY VOLTAGE
(11 - 14V)
Condition (Shift position)Voltage
Te r m i n a l 3 2 Te r m i n a l 3 3
P positionBATTERY VOLTAGE
(11 - 14V)Approximately 0 V
N position Approximately 0 VBATTERY VOLTAGE
(11 - 14V)
Except above position Approximately 0 V Approximately 0 V
PBIB1675E
Voltage: Battery voltage
PBIB1881E