2004 NISSAN TERRANO Service Repair Manual

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
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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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Diagnostic Procedure
INSPECTION START
(Air conditioner relay signal circuit)
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect air conditioner relay har- ness connector.
3. Check voltage between air conditioner relay connector terminal q
2,q3and
engine ground.
Voltage: Battery voltage
OK
ENG Check the following:
I10A fuse
I Harness for open or
short between fuse block
and A/C relay
If NG, replace or repair the
parts attached.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector.
3.Check harness continuity between ECM harness connector terminal
204and air
conditioner relay harness connector ter-
minal q
1. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-
circuit.
OK
ENG Check the following:
IHarness connectors
M812,F120(LHD mod-
els)
I Harness for open or
short-circuit between
ECM and air conditioner
relay.
If NG, repair harness or
connectors.
CHECK AIR CONDITIONER RELAY.
Refer to HA section for inspection.
OK
ENG Replace air conditioner
relay.
Disconnect and reconnect harness
connectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
NEF512
PBIB0185E
H
H
H
H
H
H
DTC P1530 AIR CONDITIONER RLYTD27Ti
EC-466
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Description
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the engine.
On Board Diagnosis Logic
DTCMalfunction is detected when ... Check Items (Possible Cause)
P1603
0901 I
ECM calculation function is malfunctioning. IECM
P1607
0301
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Start engine and wait at least 2 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº and wait at least 2 seconds.
2) Start engine and wait at least 2 seconds.
3) Turn ignition switch ªOFFº, wait at least 5 seconds and then turn ªONº.
4) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
SEC220B
SEF817Y
DTC PD1603 ECM 12, DTC P1607 ECM2TD27Ti
EC-467
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Diagnostic Procedure
INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation Procedureº, EC-467 again.
5. Is the DTC P1603 or P1607 displayed again?
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Erase the Diagnostic Test Mode II (Self- diagnostic results) memory.
3. Perform ªDTC Confirmation Procedureº, EC-467 again.
4. Perform ªDiagnostic Test Mode II (Self- diagnostic results)º.
5. Is the DTC 0301 or 0901 displayed again?
No
EYe s Replace ECM.
INSPECTION END
H
H
DTC PD1603 ECM 12, DTC P1607 ECM2TD27Ti
EC-468
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On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items (Possible Cause)
P1620
0902 I
An irregular voltage signal from the ECM relay is sent
to ECM. I
Harness or connectors
(ECM relay circuit is open or shorted.)
I ECM relay
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Turn ignition switch ªOFFº, wait at least 20 seconds and then
turn ªONº.
WITHOUT CONSULT-II
1) Turn ignition switch ªONº.
2) Turn ignition switch ªOFFº, wait at least 20 seconds and thenturn ªONº.
3) Perform ªDiagnostic Test Mode II (Self-diagnostic results)º with ECM.
SEF817Y
DTC P1620 ECM RLYTD27Ti
EC-469
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