check engine NISSAN PICK-UP 2001 Repair Manual

6 CHECK SHIELD CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect harness connectors E205, E33.
3. Check harness continuity between harness connector E33 terminal 5 and ground. Refer to wiring diagram.
Continuity should exist
4. Also check harness for short to power.
5. Then reconnect harness connectors.
OK or NG
OK©GO TO 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Joint connector-3 (Refer to ªHARNESS LAYOUTº, EL section.)
+Harness for open or short between harness connector E33 and engine ground
©Repair open circuit or short to power in harness or connectors.
8 CHECK IMPROPER INSTALLATION
Loosen and retighten the fixing bolt of the crankshaft position sensor (OBD). Then retest.
Trouble is not fixed.©GO TO 9.
DTC P1336 CKP SENSOR (OBD)KA24DE (EURO OBD)
Diagnostic Procedure
EC-3353

AEC877A
Component DescriptionNEEC0424When the gear position is ªNº or ªPº, park/neutral position (PNP)
switch is ªONº.
ECM detects the park/neutral position when continuity with ground
exists.
CONSULT-II Reference Value in Data Monitor
Mode
NEEC0425Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW+Ignition switch: ONShift lever: ªNº ON
Except above OFF
ECM Terminals and Reference ValueNEEC0426Specification 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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
22 Y/R PNP switch[Ignition switch ªONº]
+Gear position is ªNºApproximately 0V
[Ignition switch ªONº]
+Except the above gear positionApproximately 5V
On Board Diagnosis LogicNEEC0427
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P1706
1706+The signal of the PNP switch is not changed in the pro-
cess of engine starting and driving.+Harness or connectors
(The PNP switch circuit is open or shorted.)
+PNP switch
DTC P1706 PNP SWITCHKA24DE (EURO OBD)
Component Description
EC-3355

SEF212Y
DTC Confirmation Procedure=NEEC0428CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 5 seconds
before conducting the next test.
With CONSULT-II
1) Turn ignition switch ON.
SEF213Y
2) Select ªP/N POSI SWº in ªDATA MONITORº mode with CON-
SULT-II. Then check the ªP/N POSI SWº signal under the fol-
lowing conditions.
Position (Selector lever) Known-good signal
ªNº ON
Except the above position OFF
If NG, go to ªDiagnostic Procedureº, EC-3359.
If OK, go to following step.
3) Select ªDATA MONITORº mode with CONSULT-II.
4) Start engine and warm it up to normal operating temperature.
5) Maintain the following conditions for at least 60 consecutive
seconds.
ENG SPEED 1,400 - 4,000 rpm
COOLAN TEMP/S More than 70ÉC (158ÉF)
B/FUEL SCHDL 3.5 - 17 msec
VHCL SPEED SE More than 64 km/h (More than 40 MPH)
Selector lever Suitable position
6) If 1st trip DTC is detected, go to ªDiagnostic Procedureº,
EC-3359.
DTC P1706 PNP SWITCHKA24DE (EURO OBD)
DTC Confirmation Procedure
EC-3356

Diagnostic ProcedureNEEC0325
1 INSPECTION START
Turn ignition switch ªOFFº, and restart engine.
Is engine running?
YesorNo
Yes (With CONSULT-II)©GO TO 2.
Yes (Without CONSULT-
II)©GO TO 3.
No©GO TO 4.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Perform ªPOWER BALANCEº in ªACTIVE TESTº mode with CONSULT-II.
2. Make sure that all circuits do not produce a momentary engine speed drop.
SEF981Z
OK or NG
OK©INSPECTION END
NG©GO TO 7.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminal 1 and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal wave as shown below.
SEF984Z
OK or NG
OK©INSPECTION END
NG©GO TO 7.
IGNITION SIGNALKA24DE (EURO OBD)
Diagnostic Procedure
EC-3365

4 CHECK POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
SEC276D
3. Turn ignition switch ON.
4. Check voltage between terminal 7 and ground with CONSULT-II or tester.
AEC698
Voltage: Battery voltage
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Harness for open or short between ignition coil and ECM relay
+Harness for open or short between ECM relay and fuse
©Repair harness or connectors.
6 CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power transistor harness connector.
3. Check harness continuity between power transistor terminal 2 and engine ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 7.
NG©Repair open circuit or short to power in harness or connectors.
IGNITION SIGNALKA24DE (EURO OBD)
Diagnostic Procedure
EC-3366

Diagnostic ProcedureNEEC0438
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform ªPOWER BALANCEº in ªACTIVE TESTº mode with CONSULT-II.
SEF981Z
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
MEC703B
Clicking noise should be heard.
OK or NG
OK©INSPECTION END
NG©GO TO 2.
INJECTORKA24DE (EURO OBD)
Diagnostic Procedure
EC-3371

2 CHECK POWER SUPPLY
1. Stop engine.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between injector terminal 2 and ground with CONSULT-II or tester.
SEC277D
Voltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+10A fuse
+Harness for open or short between injector and fuse
©Repair harness or connectors.
4 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 1 and ECM terminals 102, 104, 109, 111. 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 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the harness for open or short between ECM and injector.
©Repair open circuit or short to ground or short to power in harness or connectors.
INJECTORKA24DE (EURO OBD)
Diagnostic Procedure
EC-3372

Diagnostic Procedure=NEEC0454
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check ªPW/ST SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
LEC065A
OK or NG
OK©INSPECTION END
NG©GO TO 4.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Start engine.
2. Check voltage between ECM terminal 39 and ground under the following conditions.
SEF662P
MTBL0142
OK or NG
OK©INSPECTION END
NG©GO TO 4.
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3387

4 CHECK INPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 39 and terminal 1. 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 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M5, E101
Check the harness for open or short between ECM and power steering oil pressure switch.
©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK GROUND CIRCUIT
1. Disconnect power steering oil pressure switch harness connector.
2. Check continuity between power steering oil pressure switch harness connector terminal 2 and ground.
Continuity should exist.
OK or NG
OK©
NG©Repair open circuit or short to power in harness or connectors.
7 CHECK POWER STEERING OIL PRESSURE SWITCH
1. Disconnect power steering oil pressure switch harness connector then start engine.
2. Check continuity between terminals 1 and ground. Refer to wiring diagram.
MTBL0307
OK or NG
OK©GO TO 8.
NG©Replace power steering oil pressure switch.
8 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-3123.
©INSPECTION END
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3388

Diagnostic Procedure=NEEC0464
1 CHECK OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
700±50 rpm
If NG, adjust idle speed.
3. Push air conditioner switch ON and turn fan switch to 4-speed.
4. Recheck idle speed.
MEF634E
850 rpm or more
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK AIR CONDITIONER FUNCTION
Check if air conditioner compressor functions normally.
OK or NG
OK©GO TO 3.
NG©Refer to ªSymptom Tableº in ªTROUBLE DIAGNOSISº, HA section.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure
EC-3392