ABS NISSAN TEANA 2008 Service Manual

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-69
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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NOTE:
Do not use soapy water or any type of solvent while installing vacuum hose.
System DescriptionINFOID:0000000003856487
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
1. Electronic controlled engine mount
control solenoid valve2. Front electronic controlled engine
mount3. Rear electronic controlled engine
mount
: To previous figure
JMBIA0183ZZ
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed
Engine mount
controlElectronic controlled en-
gine mount control solenoid
valve
ABS actuator and electric unit (control unit) Vehicle speed*

EC-76
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
EVAPORATIVE EMISSION SYSTEM
EVAPORATIVE EMISSION SYSTEM
System DiagramINFOID:0000000003949755
System DescriptionINFOID:0000000003949756
INPUT/OUTPUT SIGNAL CHART
*1: ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
JMBIA1524GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
1
Piston position
EVAP canister
purge flow controlEVAP canister purge vol-
ume control solenoid valve Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery
Battery voltage*
1
ABS actuator and electric unit (control unit)
Vehicle speed*2

EC-86
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
INTAKE VALVE TIMING CONTROL
INTAKE VALVE TIMING CONTROL
System DiagramINFOID:0000000003856494
System DescriptionINFOID:0000000003856495
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
JMBIA1491GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed and piston position
Intake valve
timing controlIntake valve timing control
solenoid valve Camshaft position sensor (PHASE)
Engine oil temperature sensor Engine oil temperature
Engine coolant temperature sensor Engine coolant temperature
ABS actuator and electric unit (control unit) Vehicle speed*
JMBIA0060GB

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-103
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not recur, the 1st trip DTC
will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is saved in the ECM memory. The MI will not
illuminate (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are saved in the ECM memory and the MI illuminates. In other words,
the DTC is stored in the ECM memory and the MI illuminates when the same malfunction occurs in two con-
secutive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or illuminate the MI during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in “How to Erase
DTC and 1st Trip DTC”.
For malfunctions in which 1st trip DTCs are displayed, refer to “EMISSION-RELATED DIAGNOSTIC INFOR-
MATION ITEMS”. These items are required by legal regulations to continuously monitor the system/compo-
nent. In addition, the items monitored non-continuously are also displayed on CONSULT-III.
1st trip DTC is specified in Service $07 of ISO 15031-5. 1st trip DTC detection occurs without illuminating the
MI and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent
the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-7, "
Work Flow". Then perform DTC Confirmation
Procedure or Component Function Check to try to duplicate the malfunction. If the malfunction is duplicated,
the item requires repair.
Freeze Frame Data and 1st Trip Freeze Frame Data
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short-term fuel trim, long-term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-III screen, not on the GST.
Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was saved in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in “How to Erase DTC and 1st Trip
DTC”.
How to Read DTC and 1st Trip DTC
With CONSULT-III
With GST
CONSULT-III or GST (Generic Scan Tool) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by ISO 15031-6.
Priority Items
1Freeze frame data Misfire — DTC: P0300 - P0306
Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes CVT related items)
3 1st trip freeze frame data

EC-116
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Freeze Frame Data and 1st Trip Freeze Frame Data
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
Monitored Item
×: Applicable
Freeze frame data item* Description
DIAG TROUBLE CODE
[PXXXX] The engine control component part/control system has a trouble code that is displayed as PXXXX. (Refer
to EC-389, "
DTCIndex".)
FUEL SYS-B1  “Fuel injection system status” at the moment a malfunction is detected is displayed.
 One of in the following mode is displayed.
Mode2: Open loop due to detected system malfunction
Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode5: Open loop - has not yet satisfied condition to go to closed loop FUEL SYS-B2
CAL/LD VALUE [%]  The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C] or
[°F] The engine coolant temperature at the moment a malfunction is detected is displayed.
L-FUEL TRM-B1 [%]  “Long-term fuel trim” at the moment a malfunction is detected is displayed.
 The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim. L-FUEL TRM-B2 [%]
S-FUEL TRM-B1 [%]  “Short-term fuel trim” at the moment a malfunction is detected is displayed.
 The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule. S-FUEL TRM-B2 [%]
ENGINE SPEED [rpm]  The engine speed at the moment a malfunction is detected is displayed.
VEHICL SPEED
[km/h] or [mph] The vehicle speed at the moment a malfunction is detected is displayed.
ABSOL TH·P/S [%]  The throttle valve opening angle at the moment a malfunction is detected is displayed.
B/FUEL SCHDL [msec]  The base fuel schedule at the moment a malfunction is detected is displayed.
INT/A TEMP SE [°C] or
[°F] The intake air temperature at the moment a malfunction is detected is displayed.
INT MANI PRES [kPa]
 These items are displayed but are not applicable to this model.
COMBUST CONDITION
Monitored item Unit Description Remarks
ENG SPEED rpm Indicates the engine speed computed from the
signal of the crankshaft position sensor (POS)
and camshaft position sensor (PHASE). Accuracy becomes poor if engine
speed drops below the idle rpm.
 If the signal is interrupted while the
engine is running, an abnormal value
may be indicated.
MAS A/F SE-B1 V The signal voltage of the mass air flow sensor is
displayed. When the engine is stopped, a certain
value is indicated.
 When engine is running, specification
range is indicated in “SPEC”.
B/FUEL SCHDL msec “Base fuel schedule” indicates the fuel injection
pulse width programmed into ECM, prior to any
learned on board correction. When engine is running, specification
range is indicated in “SPEC”.
A/F ALPHA-B1
% The mean value of the air-fuel ratio feedback cor-
rection factor per cycle is indicated. When the engine is stopped, a certain
value is indicated.
 This data also includes the data for
the air-fuel ratio learning control.
 When engine is running, specification
range is indicated in “SPEC”. A/F ALPHA-B2

EC-234
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P0500 VSS
P0500 VSS
DescriptionINFOID:0000000003856685
The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control
unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communi-
cation line.
DTC LogicINFOID:0000000003856686
DTC DETECTION LOGIC
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-135, "
DTC Logic".
If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES >> GO TO 2.
NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 3.
3.CHECK VEHICLE SPEED SIGNAL
NOTE:
This procedure 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-III
1. Start engine (VDC switch OFF).
2. Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-III. The vehicle speed on CON-
SULT-III should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Go to EC-235, "
Diagnosis Procedure".
4.PERFORM DTC CONFIRMATION PROCEDURE
1. Select “DATA MONITOR” mode with CONSULT-III.
2. Warm engine up to normal operating temperature.
3. Maintain the following conditions for at least 50 consecutive seconds.
CAUTION:
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0500 Vehicle speed sensorThe almost 0 km/h (0 MPH) signal from
vehicle speed signal is sent to ECM even
when vehicle is being driven. Harness or connectors
(The CAN communication line is open or short-
ed)
 Harness or connectors
(The vehicle speed signal circuit is open or
shorted)
 Wheel sensor
 Combination meter
 ABS actuator and electric unit (control unit)

P0500 VSS
EC-235
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Always drive vehicle at a safe speed.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-235, "Diagnosis Procedure".
NO >> INSPECTION END
5.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-235, "
Component Function Check".
Use component function check to check the overall function of the vehicle speed signal circuit. During this
check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-235, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000003856687
1.PERFORM COMPONENT FUNCTION CHECK
With GST
1. Lift up drive wheels.
2. Start engine.
3. Read vehicle speed signal in Service $01 with GST.
The vehicle speed signal on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-235, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856688
1.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-80, "
CONSULT-III Function".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning part.
2.CHECK COMBINATION METER FUNCTION
Refer to MWI-33, "
CONSULT-III Function (METER/M&A)".
>> INSPECTION END
ENG SPEED 1,600 - 6,000 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 5.5 - 31.8 msec
Selector lever Except P or N position
PW/ST SIGNAL OFF

P1212 TCS COMMUNICATION LINE
EC-249
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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P1212 TCS COMMUNICATION LINE
DescriptionINFOID:0000000003856715
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
DTC LogicINFOID:0000000003856716
DTC DETECTION LOGIC
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-135, "
DTC Logic".
If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
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:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-249, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856717
Go to BRC-62, "Work Flow".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212 TCS communication lineECM cannot receive the information from
“ABS actuator and electric unit (control
unit)” continuously. Harness or connectors
(The CAN communication line is open or short-
ed.)
 ABS actuator and electric unit (control unit)
 Dead (Weak) battery

EC-278
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1574 ASCD VEHICLE SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000003856758
The ECM receives two vehicle speed signals via CAN communication line. One is sent from combination
meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD con-
trol. Refer to EC-51, "
System Diagram" for ASCD functions.
DTC LogicINFOID:0000000003856759
DTC DETECTION LOGIC
NOTE:
If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-135, "
DTC Logic".
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
to EC-234, "
DTC Logic".
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-240, "
DTC Logic".
If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
to EC-242, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine (VDC switch OFF).
2. Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure 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.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-278, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000003856760
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-35, "
Diagnosis Description".
Is the inspection result normal?
YES >> GO TO 2.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1574ASCD vehicle speed
sensorThe difference between the two vehicle speed
signals is out of the specified range. Harness or connectors
(The CAN communication line is open or
shorted.)
 Combination meter
 ABS actuator and electric unit (control unit)
 Wheel sensor
TCM
ECM

P1574 ASCD VEHICLE SPEED SENSOR
EC-279
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-80, "
CONSULT-III Function".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning part.
3.CHECK COMBINATION METER FUNCTION
Refer to MWI-33, "
CONSULT-III Function (METER/M&A)".
>> INSPECTION END