ignition NISSAN ALMERA 2001 Service Manual

Diagnostic ProcedureNJEC0770
1 CHECK START SIGNAL OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªSTART SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF604X
Without CONSULT-II
Check voltage between ECM terminal 422 and ground under the following conditions.
SEF909Y
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK START SIGNAL INPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector and ignition switch harness connector.
3. Check harness continuity between ECM terminal 422 and ignition switch terminal 6. 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 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M63, F102
+10A fuse
+Fuse block (J/B) connectors M2, E104
+Harness for open or short between ECM and ignition switch
©Repair open circuit or short to ground or short to power in harness or connectors.
START SIGNALYD
Diagnostic Procedure
EC-824

DescriptionNJEC0781When the gear position is in ªNeutralº, neutral position is ªONº. ECM detects the position because the conti-
nuity of the line (the ªONº signal) exists.
CONSULT-II Reference Value in Data Monitor
Mode
NJEC0782Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW+Ignition switch: ONShift lever: Neutral ON
Except above OFF
On models not equipped with park/neutral position (PNP) switch, ªOFFº is always displayed regardless of gear shift position.
ECM Terminals and Reference ValueNJEC0783Specification 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.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
418 G/ORPark/Neutral position
switch[Ignition switch ªONº]
+Gear position is ªNeutralºApproximately 0V
[Ignition switch ªONº]
+Except the above gear positionBATTERY VOLTAGE
(11 - 14V)
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Description
EC-826

Diagnostic ProcedureNJEC0785
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªP/N POSI SWº in ªDATA MONITORº mode with CONSULT-II.
3. Check ªP/N POSI SWº signal under the following conditions.
SEF049Y
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 418 and ground under the following conditions.
SEF914Y
OK or NG
OK©INSPECTION END
NG©GO TO 2.
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Diagnostic Procedure
EC-828

2 CHECK PNP SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect park/neutral position (PNP) switch harness connector.
SEF393Y
3. Check harness continuity between PNP switch terminal 4 and body ground. 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 3.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 418 and PNP switch terminal 2. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK PARK/NEUTRAL POSITION (PNP) SWITCH
Refer to MT-21, ªPosition Switch Checkº.
OK or NG
OK©GO TO 5.
NG©Replace park/neutral position (PNP) switch.
5 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-665.
©INSPECTION END
PARK/NEUTRAL POSITION (PNP) SWITCH (WHERE FITTED)YD
Diagnostic Procedure (Cont'd)
EC-829

Wiring Diagram Ð POWER Ð/Sedan With
Gasoline Engine
NJEL0006BATTERY POWER SUPPLY Ð IGNITION SW. IN ANY POSITIONNJEL0006S01
HEL451B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Gasoline Engine
EL-11

ACCESSORY POWER SUPPLY Ð IGNITION SW. IN ªACCº OR ªONºNJEL0006S02
HEL355B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Gasoline Engine (Cont'd)
EL-15

IGNITION POWER SUPPLY Ð IGNITION SW. IN ªONº AND/OR ªSTARTºNJEL0006S03
HEL356B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Gasoline Engine (Cont'd)
EL-16

Wiring Diagram Ð POWER Ð/Sedan With
Diesel Engine
NJEL0313BATTERY POWER SUPPLY Ð IGNITION SW. IN ANY POSITIONNJEL0313S01
HEL452B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Diesel Engine
EL-19

ACCESSORY POWER SUPPLY Ð IGNITION SW. IN ªACCº OR ªONºNJEL0313S02
HEL360B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Diesel Engine (Cont'd)
EL-22

IGNITION POWER SUPPLY Ð IGNITION SW. IN ªONº AND/OR ªSTARTºNJEL0313S03
HEL361B
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð/Sedan With Diesel Engine (Cont'd)
EL-23