Nissan Terrano r20e. Manual — part 199
Wiring Diagram
LHD MODELS
EGR control solenoid valve A and B
YEC159A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
EC-433
RHD MODELS
EGR control solenoid valve A and B
YEC160A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
Wiring Diagram (Cont’d)
EC-434
Throttle control solenoid valve
YEC161A
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
Wiring Diagram (Cont’d)
EC-435
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
E
OK
INSPECTION END
CHECK VACUUM SOURCES TO EGR
VALVE AND THROTTLE CONTROL
VALVE.
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
E
OK
CHECK COMPONENTS
(EGR valve and throttle
control valve).
(See page EC-439.)
NG
Replace malfunctioning
component(s).
q
A
YEC243A
NEF509
YEC244A
NEF511
H
H
H
H
DTC P1404 EGR SOL/V A, DTC P1405 EGR SOL/V B/P1407
THROTTLE SOLENOID VALVE
TD27Ti
EC-436
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