NISSAN ALMERA 2001 Service Manual

Wiring DiagramNJEC1773HATCHBACK MODELS WITH ECM IN CABINNJEC1773S01
HEC970
INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Wiring Diagram
EC-527

SEDAN MODELS AND HATCHBACK MODELS WITH
ECM IN ENGINE COMPARTMENT
NJEC1773S02
NEF333A
INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Wiring Diagram (Cont'd)
EC-528

Diagnostic ProcedureNJEC1774
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 and warm it up to normal operation temperature.
2. Select ªINT/V SOL-B1º in ªDATA MONITORº mode with CONSULT-II.
3. Lift-up the vehicle and simulate driving in a suitable gear position.
4. Check the ªINT/V SOL-B1º signal under the following conditions.
SEF758Z
OK or NG
OK©INSPECTION END
NG©GO TO 4.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Start engine and warm it up to normal operation temperature.
2. Lift up the vehicle and simulate driving in a suitable gear position.
3. Check the voltage between ECM terminal 1 and ground under the following conditions.
SEF757Z
OK or NG
OK©INSPECTION END
NG©GO TO 4.
INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Diagnostic Procedure
EC-529

4 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect intake valve timing control solenoid valve harness connector.
SEF149X
3. Turn ignition switch ªONº.
4. Check voltage between terminal 1 and engine ground with CONSULT-II or tester.
SEF619X
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors F35, E74 (If so equipped)
+Harness connectors M169, F113 (If so equipped)
+10A fuse
+Harness for open or short between valve timing control solenoid valve and fuse
©Repair harness or connectors.
6 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 1 and intake valve timing control solenoid valve harness connector
terminal 2. 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 7.
NG©Repair open circuit or short to ground to short to power or connectors.
INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Diagnostic Procedure (Cont'd)
EC-530

7 CHECK VALVE TIMING CONTROL SOLENOID VALVE
Refer to ªComponent Inspectionº, EC-531.
OK or NG
OK©GO TO 8.
NG©Replace valve timing control solenoid valve.
8 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-177.
©INSPECTION END
SEF159Y
Component InspectionNJEC1775INTAKE VALVE TIMING CONTROL SOLENOID VALVENJEC1775S011. Check oil passage visually for any metal debris.
2. Supply intake valve timing control solenoid valve terminals with
battery voltage.
3. Make sure that inside plunger protrudes.
If NG, replace intake valve timing control solenoid valve.
INTAKE VALVE TIMING CONTROL SOLENOID VALVEQG
Diagnostic Procedure (Cont'd)
EC-531

System DescriptionNJEC1776These circuit lines are used to control the smooth shifting up and down of A/T during the hard acceleration/
deceleration.
Voltage signals are exchanged between ECM and TCM (Transmission Control Module).
A/T COMMUNICATION LINEQG
System Description
EC-532

Wiring DiagramNJEC1777
HEC912
A/T COMMUNICATION LINEQG
Wiring Diagram
EC-533

Diagnostic ProcedureNJEC1778
1 CHECK OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Check the voltage between ECM terminals 10, 19, 54, 55, 56 and ground.
SEF791Z
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector and TCM (Transmission Control Module) harness connector.
SEF116Y
3. Check harness continuity between the following terminals.
YEC057A
Refer to Wiring Diagram.
Continuity should exist.
OK or NG
OK©GO TO 3.
NG©Repair harness or connectors.
A/T COMMUNICATION LINEQG
Diagnostic Procedure
EC-534

3 CHECK A/T CONTROL INPUT SIGNAL CIRCUIT FOR SHORT
1. Check harness continuity between ECM terminals 10, 19, 54, 55, 56 and ground.
Refer to Wiring Diagram.
Continuity should not exist.
2. Also check harness for short to power.
OK or NG
OK©GO TO 4.
NG©Repair short to ground or short to power in harness or connectos.
4 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-177.
©INSPECTION END
A/T COMMUNICATION LINEQG
Diagnostic Procedure (Cont'd)
EC-535

SEF740W
Component DescriptionNJEC1779When the gear position is ªPº (A/T models only) or ªNº, 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
NJEC1780Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW+Ignition switch: ONShift lever: ªPº or ªNº ON
Except above OFF
ECM Terminals and Reference ValueNJEC1781Specification 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)
42 G/OR PNP switch[Ignition switch ªONº]
+Gear position is ªNeutral positionº (M/T models)
+Gear position is ªNº or ªPº (A/T models)Approximately 0V
[Ignition switch ªONº]
+Except the above gear positionA/T models
BATTERY VOLTAGE
(11 - 14V)
M/T models
Approximately 5V
PARK/NEUTRAL POSITION (PNP) SWITCHQG
Component Description
EC-536