NISSAN ALMERA TINO 2001 Service Repair Manual

Wiring DiagramNLEC1927MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1927S01
YEC761
IGNITION SIGNALSR20DE
Wiring Diagram
EC-1006

MODELS WITH ECM IN CABINNLEC1927S02
YEC938
IGNITION SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1007

Diagnostic ProcedureNLEC1928
1 CHECK ENGINE START
Turn ignition switch ªOFFº, and restart engine.
Is engine running?
YesorNo
Ye s©GO TO 7.
No©GO TO 2.
2 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect ignition coil harness connector.
SEF211X
3. Turn ignition switch ªONº.
4. Check voltage between ignition coil terminal 8 and ground with CONSULT-II or tester.
SEF257W
Voltage: Battery voltage
OK or NG
OK©GO TO 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E76, F36
+ECM relay
+15A fuse
+Harness for open or short between ignition coil and fuse
©Repair harness or connectors.
IGNITION SIGNALSR20DE
Diagnostic Procedure
EC-1008

4 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect camshaft position sensor harness connector.
3. Check harness continuity between CMPS terminal 5 and engine ground.
Refer to ªWiring Diagramº, EC-1006.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 5.
NG©Repair open circuit or short to power in harness or connectors.
5 CHECK INPUT SIGNAL CIRCUIT-I
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 35 and CMPS terminal 6.
Refer to ªWiring Diagramº, EC-1006.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 6.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK IGNITION COIL, POWER TRANSISTOR
Refer to ªComponent Inspectionº, EC-1010.
OK or NG
OK©GO TO 7.
NG©Replace malfunctioning component(s).
7 CHECK INPUT SIGNAL CIRCUIT-II
1. Stop engine.
2. Disconnect ignition coil harness connector and ECM harness connector.
SEF211X
3. Check harness continuity between ignition coil terminal 7 and ECM terminal 36.
Refer to ªWiring Diagramº, EC-1006.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 8.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
IGNITION SIGNALSR20DE
Diagnostic Procedure (Cont'd)
EC-1009

8 CHECK RESISTOR
Refer to ªComponent Inspectionº EC-1011.
OK or NG
OK©GO TO 9.
NG©Replace distributor cap.
9 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-670.
©INSPECTION END
SEF237X
SEF238X
Component InspectionNLEC1929IGNITION COILNLEC1929S011. Disconnect ignition coil harness connector.
2. Check resistance as shown in the figure.
3. For checking secondary coil, remove distributor cap.
4. Check resistance between ignition coil harness connector ter-
minal 8 and coil tower metal tip 9 (secondary terminal) on the
distributor head.
Terminal Resistance [at 25ÉC (77ÉF)]
7 - 8 (Primary coil) Approximately 2.2W
8 - secondary terminal on distributor
head (Secondary coil)Approximately 17 kW
If NG, replace distributor.
SEF943XA
POWER TRANSISTORNLEC1929S021. Disconnect power transistor harness connector and ignition
coil harness connector.
2. Check power transistor resistance between terminals 5 and 7.
Terminals Resistance Result
5 and 7Except 0WOK
0WNG
If NG, replace distributor.
IGNITION SIGNALSR20DE
Diagnostic Procedure (Cont'd)
EC-1010

SEF944X
RESISTORNLEC1929S031. Disconnect resistor harness connector.
2. Check resistance as shown in the figure.
Resistance: Approximately 5 kW[at 25ÉC (77ÉF)]
If NG, replace distributor cap.
IGNITION SIGNALSR20DE
Component Inspection (Cont'd)
EC-1011

System DescriptionNLEC1844These circuit lines are used to control the smooth shifting up and down of CVT during the hard acceleration/
deceleration.
Voltage signals are exchanged between ECM and TCM (Transmission Control Module).
A/T COMMUNICATION LINESR20DE
System Description
EC-1012

Wiring Diagram=NLEC1845
YEC719
A/T COMMUNICATION LINESR20DE
Wiring Diagram
EC-1013

Diagnostic ProcedureNLEC1846
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.
MTBL0574
Refer to Wiring Diagram.
Continuity should exist.
OK or NG
OK©GO TO 3.
NG©Repair harness or connectors.
A/T COMMUNICATION LINESR20DE
Diagnostic Procedure
EC-1014

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-670.
©INSPECTION END
A/T COMMUNICATION LINESR20DE
Diagnostic Procedure (Cont'd)
EC-1015