NISSAN ALMERA N16 2003 Electronic Repair Manual

11 CHECK ACCELERATOR POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect accelerator work unit harness connector.
SEF886Y
3. Turn ignition switch “ON”.
4. Check voltage between accelerator work unit terminal 3 and ground with CONSULT-II or tester.
SEF912Y
OK or NG
OK GO TO 13.
NG GO TO 12.
12 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M74, F112
Harness for open or short between accelerator work unit and ECM
Repair harness or connectors.
13 CHECK ACCELERATOR POSITION SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between accelerator work unit terminal 1 and ECM terminal 426. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 15.
NG GO TO 14.
14 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M74, F112
Harness for open or short between ECM and accelerator work unit
Repair open circuit or short to ground or short to power in harness or connectors.
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DTC P0120 ACCEL POS SENSORYD
Diagnostic Procedure (Cont’d)
EC-97

15 CHECK ACCELERATOR POSITION SWITCH
Check continuity between accelerator position switch terminals 1 and 3 under the following conditions.
SEF913Y
OK or NG
OK GO TO 16.
NG Replace accelerator pedal assembly.
16 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-71.
INSPECTION END
DTC P0120 ACCEL POS SENSORYD
Diagnostic Procedure (Cont’d)
EC-98

SEF420Z
DescriptionNJEC0686The crankshaft position sensor (TDC) monitors engine speed by
means of signals from the sensing plate (with three protrusions)
installed to the crankshaft pulley. The datum signal output is
detected at ATDC 10° and sent to the ECM. The sensor signal is
used for fuel injection control and fuel injection timing control.
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0687Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
CKPS·RPM (TDC)Run engine and compare the CONSULT-II value with tachometer
indication.Almost the same speed as the
tachometer indication.
ECM Terminals and Reference ValueNJEC0688Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA(DC Voltage and Pulse
Signal)
331 ORCrankshaft position sen-
sor (TDC) ground[Engine is running]
Warm-up condition
Idle speedApproximately 0V
344 WCrankshaft position sen-
sor (TDC)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
SEF333Y
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpmApproximately 0V
SEF334Y
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DTC P0335 CRANK POS SEN (TDC)YD
Description
EC-99

On Board Diagnosis Logic=NJEC0689This self-diagnosis has the one trip detection logic.
DTC Malfunction is detected when ... Check Items (Possible Cause)
P0335
0407An improper signal from the sensor is sent to
ECM during engine running and cranking.Harness or connectors
(The sensor circuit is open.)
Crankshaft position sensor (TDC)
SEF817Y
DTC Confirmation ProcedureNJEC0690Before performing the following procedure, confirm that bat-
tery voltage is more than 10V.
WITH CONSULT-IINJEC0690S011) Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2) Crank engine for at least 1 second.
3) Start engine and run it for at least 2 seconds at idle speed.
4) If DTC is detected, go to “Diagnostic Procedure”, EC-102.
WITHOUT CONSULT-IINJEC0690S021) Crank engine for at least 1 second.
2) Start engine and run it for at least 2 seconds at idle speed.
3) Turn ignition switch “OFF”, wait at least 5 seconds and then
turn “ON”.
4) Perform “Diagnostic Test Mode II (Self-diagnostic results)” with
ECM.
5) If DTC is detected, go to “Diagnostic Procedure”, EC-102.
DTC P0335 CRANK POS SEN (TDC)YD
On Board Diagnosis Logic
EC-100

Wiring DiagramNJEC0691
YEC013A
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DTC P0335 CRANK POS SEN (TDC)YD
Wiring Diagram
EC-101

Diagnostic ProcedureNJEC0692
1 CHECK CRANKSHAFT POSITION SENSOR (TDC) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
SEF380Y
3. Disconnect crankshaft position sensor (TDC) harness connector and ECMharness connector.
SEF387Y
4. Check harness continuity between ECM terminal 331 and crankshaft position sensor (TDC) terminal 1. Refer to Wiring
Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 2.
NG Repair open circuit or short to ground or short to power in harness or connectors.
2 CHECK CRANKSHAFT POSITION SENSOR (TDC) INPUT SIGNAL CIRCUIT FOR OPEN ANDSHORT
1. Check harness continuity between crankshaft position sensor (TDC) terminal 2 and ECM terminal 344. Refer to Wiring
Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 3.
NG Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0335 CRANK POS SEN (TDC)YD
Diagnostic Procedure
EC-102

3 CHECK CRANKSHAFT POSITION SENSOR (TDC)-I
1. Loosen the fixing bolt and remove the crankshaft position sensor (TDC).
2. Visually check the sensor for chipping.
SEF620S
OK or NG
OK GO TO 4.
NG Replace crankshaft position sensor (TDC).
4 CHECK CRANKSHAFT POSITION SENSOR (TDC)-II
1. Disconnect crankshaft position sensor (TDC) harness connector.
2. Check resistance between crankshaft position sensor (TDC) terminals 1and 2.
SEF408Y
OK or NG
OK GO TO 5.
NG Replace crankshaft position sensor (TDC).
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DTC P0335 CRANK POS SEN (TDC)YD
Diagnostic Procedure (Cont’d)
EC-103

5 INSTALL CRANKSHAFT POSITION SENSOR (TDC)
1. Install crankshaft position sensor (TDC) and temporarily tighten the fixing bolt.
2. Turn crankshaft position sensor (TDC) clockwise until it stops.
3. Tighten the fixing bolt.
SEF409Y
GO TO 6.
6 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-71.
INSPECTION END
DTC P0335 CRANK POS SEN (TDC)YD
Diagnostic Procedure (Cont’d)
EC-104

AEC110
DescriptionNJEC0654The vehicle speed sensor is installed in the transaxle. It contains a
pulse generator which provides a vehicle speed signal to the
speedometer. The speedometer then sends a signal to the ECM.
ECM Terminals and Reference ValueNJEC0655Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONDATA (DC Voltage and
Pulse Signal)
417 PU/R Vehicle speed sensor[Engine is running]
Lift up the vehicle.
In 1st gear position
Vehicle speed is 10 km/h (6 MPH)Approximately 8V
SEF891Y
[Engine is running]
Lift up the vehicle.
In 2nd gear position
Vehicle speed is 30 km/h (19 MPH)Approximately 6V
SEF892Y
On Board Diagnosis LogicNJEC0656This self-diagnosis has the one trip detection logic.
DTC Malfunction is detected when .... Check Items (Possible Cause)
P0500
0104The almost 0 km/h (0 MPH) signal from vehicle
speed sensor is sent to ECM even when vehicle
is being driven.Harness or connector
(The vehicle speed sensor circuit is open or
shorted.)
Vehicle speed sensor
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DTC P0500 VEHICLE SPEED SENYD
Description
EC-105

SEF864Y
Overall Function CheckNJEC0657Use this procedure to check the overall function of the vehicle
speed sensor circuit. During this check, a DTC might not be con-
firmed.
WITH CONSULT-IINJEC0657S011) Lift up the vehicle.
2) Start engine.
3) Read vehicle speed sensor signal in “DATA MONITOR” mode
with CONSULT-II.
The vehicle speed on CONSULT-II should be able to
exceed 10 km/h (6 MPH) when rotating wheels with suit-
able gear position.
4) If NG, go to “Diagnostic Procedure”, EC-108.
WITHOUT CONSULT-IINJEC0657S021) Lift up the vehicle.
2) Start engine.
3) Read the voltage signal for the vehicle speed sensor with an
oscilloscope. Refer to “ECM Terminals and Reference Value”,
EC-105.
4) Verify that the oscilloscope screen shows the signal wave as
shown at “ECM Terminals and Reference Value”, EC-105.
5) If NG, go to “Diagnostic Procedure”, EC-108.
DTC P0500 VEHICLE SPEED SENYD
Overall Function Check
EC-106