NISSAN TERRANO 2004 Service Repair Manual

Wiring Diagram
LHD MODELS
EGR control solenoid valve A and B
YEC683A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407THROTTLE SOLENOID VALVETD27Ti
EC-456
http://vnx.su/

RHD MODELS
EGR control solenoid valve A and B
YEC684A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407THROTTLE SOLENOID VALVETD27Ti
Wiring Diagram (Cont'd)
EC-457
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Throttle control solenoid valve
YEC685A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407THROTTLE SOLENOID VALVETD27Ti
Wiring Diagram (Cont'd)
EC-458
http://vnx.su/

Diagnostic Procedure
EGR CONTROL
INSPECTION START
CHECK OVERALL FUNCTION.
1. Start engine and warm it up sufficiently.
2. Perform diagnostic test mode II (Self- diagnostic results).
Make sure that diagnostic trouble code
P0000 (0505) is displayed.
3. Make sure that EGR valve spring moves up and down (Use your finger)
under the following conditions.
At idle:Spring does not move.
Racing engine from idle to 3,000
rpm: Spring moves up and down.
4. Make sure that throttle control valve rod moves up and down under the following
conditions.
At idle:Rod does not move.
Racing engine from idle to 3,000
rpm: Rod moves up and down.
NG
EOK INSPECTION END
CHECK VACUUM SOURCES TO EGR
VALVE AND THROTTLE CONTROL
VA LV E .
1. Disconnect vacuum hoses to EGR
valve and throttle control valve.
2. Make sure that vacuum exists under the following conditions.
At idle:Vacuum should exist.
Racing engine from idle to 3,000
rpm: Vacuum should not exist.
NG
EOK CHECK COMPONENTS
(EGR valve and throttle
control valve).
(See page EC-462.)
NG
Replace malfunctioning
component(s).
qA
YEC243A
NEF509
YEC244A
NEF511
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
EC-459
http://vnx.su/

qA
CHECK CONTROL FUNCTION.
With CONSULT-II
1. Turn ignition switch to ªONº position.
2. Turn EGRC-solenoid valve A, B and throttle control solenoid valve to ªONº
and to ªOFFº in ªACTIVE TESTº mode
with CONSULT and check operating
sound.
Without CONSULT-II
1. Check voltage between ECM connector terminals
208,210and engine
ground with tester under the following
conditions.
Voltage: At idle:Approximately 0.4V
Engine speed is more than 3,000
rpm: Battery voltage
2. Check voltage between ECM connector terminal q
1and engine ground with
tester under the following conditions.
Voltage: At idle:Approximately 0.4V
Engine speed is more than 2,400
rpm: Battery voltage
NG
EOK CHECK VACUUM HOSE.
Check vacuum hose for
clogging, cracks or
improper connection.
CHECK POWER SUPPLY-I.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect EGRC-solenoid valve A and B harness connector.
3. Turn ignition switch to ªONº position.
4. Check voltage between EGRC-solenoid valve A and B terminals q
2and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
ENG Check the following:
I20A fuse
I Condition and operation
of ignition switch
I Harness connectors
M787,F66(LHD mod-
els)
I Harness connectors
F100,M775(RHD mod-
els)
I ECM relay
I Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and fuse.
If NG, replace fuse or
repair ignition switch, har-
ness or connectors.
qB
MEC953D
SEF816F
YEC247A
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
Diagnostic Procedure (Cont'd)
EC-460
http://vnx.su/

qB
CHECK POWER SUPPLY-II.
1. Turn ignition switch ªOFFº.
2. Disconnect throttle control solenoid valve harness connector.
3. Turn ignition switch ªONº.
4. Check voltage between throttle solenoid valve connector terminal q
2and engine
ground with CONSULT-II or tester.
Voltage: Battery voltage
OK
ENG Check the following.
I20A fuse
I ECM relay
I Harness connectors
M787,F66(LHD mod-
els)
I Harness connectors
F100,M77(RHD mod-
els)
I Harness for open or
short circuit between
throttle control solenoid
valve and ECM relay.
If NG, repair or replace
harness or connectors.
CHECK OUTPUT SIGNAL CIRCUIT-I.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM connector terminal
208and
EGR Control Solenoid Valve A connec-
tor terminal q
1; ECM connector terminal
210and EGR Control Solenoid Valve
B connector terminal q
1. Refer to wiring
diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness connectors
F100,M775(RHD mod-
els)
I Harness for open or
short-circuit between
EGRC-solenoid valve A,
B and ECM
If NG, repair harness or
connectors.
CHECK OUTPUT SIGNAL CIRCUIT-II.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM connector terminal
213and
throttle control solenoid valve terminal
q
1. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
ENG Check the following:
IHarness connectors
F137,M853(RHD mod-
els)
I Harness for open or
short circuit between
throttle control solenoid
valve and ECM
If NG, repair harness or
connectors.
CHECK COMPONENTS
(EGRC-solenoid valve A and B).
(Throttle control valve)
Refer to EC-462.
OK
ENG Replace malfunctioning
component(s).
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage or
the connection of ECM harness connector.
Reconnect ECM harness connector and
retest.
INSPECTION END
MEC954D
H
H
H
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
Diagnostic Procedure (Cont'd)
EC-461
http://vnx.su/

Component Inspection
E G R VA LV E
Apply vacuum to EGR vacuum port with a hand vacuum pump.
EGR valve diaphragm should lift.
If NG, replace EGR valve.
THROTTLE CONTROL VALVE
Apply vacuum to throttle control valve vacuum port with a hand
vacuum pump.
Throttle control valve should close.
If NG, replace throttle control valve.
EGRC-SOLENOID VALVE A, B AND THROTTLE
CONTROL SOLENOID VALVE
Check air passage continuity.
Component Applied voltageAir passage continuity
between ports qAandqB
EGRC-
solenoid valve A 12V dc between terminals
q1&q4...........................
No supply YES
........................... NO
EGRC-
solenoid valve B 12V dc between terminals
q
2&q5...........................
No supply YES
........................... NO
Throttle control solenoidvalve A 12V dc between terminals
q
3&q6...........................
No supply YES
........................... NO
If NG, replace EGRC-solenoid valve A, B and throttle control sole-
noid valve.
MEF137D
NEF514
NEF515
NEF517
NEF518
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407 THROTTLE SOLENOID VALVETD27Ti
EC-462
http://vnx.su/

Component Description
AIR CONDITIONER CUT CONTROL
Air conditioner is cut under the following conditions:
IStarting engine
I Quick acceleration from low speed
I Undershooting of idle speed
I High engine coolant temperature [above 107ÉC (225ÉF)]
I Malfunctioning of engine speed sensor, accelerator position sen-
sor or vehicle speed sensor when engine speed is below 2,100
rpm.
On Board Diagnosis Logic
DTC Malfunction is detected when .... Check Items
(Possible cause)
P1530
0805 I
Air conditioner relay signal circuit is shorted. IHarness or connectors
(The air conditioner relay signal circuit is shorted.)
I Air conditioner relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch and air conditioner switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch and air conditioner switch to ªONº position.
Wait at least 2 seconds.
2) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then turn to ªONº position.
3) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
DTC P1530 AIR CONDITIONER RLYTD27Ti
EC-463
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Wiring Diagram
LHD MODELS
YEC154A
DTC P1530 AIR CONDITIONER RLYTD27Ti
EC-464
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RHD MODELS
YEC686A
DTC P1530 AIR CONDITIONER RLYTD27Ti
Wiring Diagram (Cont'd)EC-465
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