2003 NISSAN TEANA wheel

DTC P0550 PSP SENSOR
EC-537
[VQ]
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6. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionBBS0051F
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 12 and ground under the
following conditions.
Removal and InstallationBBS007TO
POWER STEERING PRESSURE SENSOR
Refer to PS-39, "HYDRAULIC LINE" .
Condition Voltage
Steering wheel: Being turned 0.5 - 4.5V
Steering wheel: Not being turned 0.4 - 0.8V
MBIB0126E

DTC P1217 ENGINE OVER TEMPERATURE
EC-575
[VQ]
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DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
System DescriptionBBS0052T
NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-458, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
COOLING FAN CONTROL
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MID/LOW/OFF].
The ECM controls cooling fan relays through CAN communication line.
COOLING FAN OPERATION
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
Cooling fan
controlIPDM E/R
(Cooling fan relays) Battery
Battery voltage*
1
Wheel sensor
Vehicle speed*2
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch
Air conditioner ON signal*
2
Refrigerant pressure sensor Refrigerant pressure
PBIB3252E

EC-600
[VQ]
DTC P1564 ASCD STEERING SWITCH

4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M55, F102

Combination switch (spiral cable)

Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between combination switch terminal 14 and ECM terminal 99.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Combination switch (spiral cable)

Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK ASCD STEERING SWITCH
Refer to EC-601, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace steering wheel.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.

DTC P1572 ASCD BRAKE SWITCH
EC-603
[VQ]
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DTC Confirmation ProcedureBBS0053P
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.

Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for
malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
WITH CONSULT-II
TESTING CONDITION:
Steps 4 and 5 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. Select “DATA MONITOR” mode with CONSULT-II.
3. Press CRUISE switch and make sure that CRUISE indicator
lights up.
4. Drive the vehicle for at least 5 consecutive seconds under the
following condition.
If 1st trip DTC is detected, go to EC-606, "
Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to the following step.
5. Drive the vehicle for at least 5 consecutive seconds under the following condition.
6. If 1st trip DTC is detected, go to EC-606, "
Diagnostic Procedure" .
VHCL SPEED SE More than 30 km/h (19 MPH)
Selector lever Suitable position
PBIB2386E
VHCL SPEED SE More than 30 km/h (19 MPH)
Selector lever Suitable position
Driving locationDepress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned vehicle speed.

DTC P1574 ASCD VEHICLE SPEED SENSOR
EC-611
[VQ]
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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-624
[VQ]
DTC P1720 VSS

DTC P1720 VSSPFP:31036
DescriptionBBS005B3
NOTE:
If DTC P1720 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-458, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
ECM receives two vehicle speed signals via CAN communication line. One is sent from “ABS actuator and
electric unit (control unit)” via “unified meter and A/C amp.”, and the other is from TCM (Transmission control
module). ECM uses these signals for engine control.
CONSULT-II Reference Value in Data Monitor ModeBBS005B4
Specification data are reference values.
On Board Diagnosis LogicBBS005B5
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureBBS005B6
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-625, "
Diagnostic Procedure"
.
MONITOR ITEM CONDITION SPECIFICATION
VHCL SPEED SE

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

Harness or connectors
(Secondary speed sensor circuit is open or
shorted)

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

TCM

Secondary speed sensor

ABS actuator and electric unit (control unit)

Wheel sensor

Unified meter and A/C amp.
PBIB2673E

EC-672
[VQ]
ELECTRONIC CONTROLLED ENGINE MOUNT

ELECTRONIC CONTROLLED ENGINE MOUNTPFP:11270
System DescriptionBBS0056V
*: This signal is sent to the ECM through CAN communication line.
The ECM controls the engine mount operation corresponding to the engine speed and the vehicle speed. The
control system has 2-step control [Soft/Hard]
CONSULT-II Reference Value in Data Monitor ModeBBS0056W
Specification data are reference values.
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Engine mount
controlElectronic controlled engine
mount
wheel sensor Vehicle speed*
Vehicle condition Engine mount control
Idle (with vehicle stopped)Soft
Except above conditionsHard
MONITOR ITEM CONDITION SPECIFICATION
ENGINE MOUNT

Engine: After warming upIdle (with vehicle stopped) IDLE
Except above conditions TRVL

EC-674
[VQ]
ELECTRONIC CONTROLLED ENGINE MOUNT

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 ProcedureBBS0056Y
1. INSPECTION START
Do you have CONSULT-II?
Ye s o r N o
Yes >> GO TO 2.
No >> GO TO 3.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ON.
2. Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with
CONSULT-II and touch “ON/OFF” on the CONSULT-II screen.
3. Check that the motor operating sound is heard from front elec-
tronic controlled engine mount and rear electric controlled
engine mount for about 0.5 seconds according to the switching
condition of “ENGINE MOUNTING”.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
3. CHECK OVERALL FUNCTION
Without CONSULT-II
1. Make sure that gear position is P or N.
2. Start engine and let it idle.
3. Change the engine speed from idle to more than 1,000 rpm and then return to idle (with vehicle stopped).
4. Check that the motor operating sound is heard from front electronic controlled engine mount and rear
electronic controlled engine mount for about 0.5 seconds when changing engine speed.
It is better to hear the operating sound around the left side front wheel house.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
8W/LElectronic controlled engine
mount-1[Engine is running]

Idle speed (with vehicle stopped)0 - 3.0V
[Engine is running]

Except above conditionsBATTERY VOLTAGE
(11 - 14V)
9 O/BElectronic controlled engine
mount-2[Engine is running]

Idle speed (with vehicle stopped)BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Except above conditions0 - 3.0V
SEC237C