Nissan Primera P11. Instruction — part 107
DIAGNOSTIC PROCEDURE
INSPECTION START
EGR CONTROL OPERATION
CHECK OVERALL FUNCTION.
1. Start engine and warm it up suffi-
ciently. (Air conditioner is “OFF”).
2. Perform diagnostic test mode II
(Self-diagnostic results).
Make sure that diagnostic trouble
code No. 55 is displayed.
3. Make sure that EGR diaphragm
moves up and down (Use your finger
or a suitable tool) under the following
conditions:
At idle:
Spring does not move.
Racing engine from idle to 2800
rpm:
Spring moves up and down.
NG
E
OK
INSPECTION END
CHECK VACUUM SOURCES TO EGR
VALVE.
1. Disconnect vacuum hoses to EGR
valve.
2. Make sure that vacuum exists under
the following conditions:
At idle:
Vacuum should not exist.
Racing engine from idle to 2800
rpm:
Vacuum should exist.
NG
E
OK
CHECK COMPONENTS
(EGR valve).
(See page EC-CD-135.)
NG
Replace malfunctioning
component(s).
p
A
NEF433
EGR
valve
NEF434
EGR
valve
H
H
H
H
TROUBLE DIAGNOSES 16
CD20T
EGRC-Solenoid Valve (Cont’d)
EC-133
p
A
CHECK CONTROL FUNCTION.
1. Turn ignition switch to “ON”
position.
2. Turn EGRC-solenoid valve A
“ON” and “OFF” in “ACTIVE
TEST” mode with CONSULT-II
and check operating sound.
---------------------------------------------------------------------------------------------------------------------------------------- OR ----------------------------------------------------------------------------------------------------------------------------------------
1. Check voltage between EGRC
solenoid valve A connector ter-
minal
p
1
, and ground with
tester under the following condi-
tions:
Voltage:
At idle
Battery voltage
Engine speed is 2,800 rpm
Approximately 0.4V
NG
E
OK
CHECK VACUUM
HOSE.
Check vacuum hose
for clogging, cracks or
improper connection.
Perform electrical circuit inspection.
Refer to EC-CD-132.
OK
p
B
C2ESA01
NEF435
NEF846
Crack
Clogging
Improper connection
.
NEF436
.
EGRC-solenoid valve
harness connector
H
H
H
TROUBLE DIAGNOSES 16
CD20T
EGRC-Solenoid Valve (Cont’d)
EC-134
COMPONENT INSPECTION
EGR valve
Apply vacuum to EGR vacuum port with a hand vacuum pump.
EGR valve spring should lift.
If NG, replace EGR valve.
EGRC-solenoid valve
Check air passage continuity.
Condition
Air passage
continuity
between
p
A
and
p
B
Air passage
continuity
between
p
A
and
p
C
12V direct current sup-
ply between terminals
p
1
and
p
2
Yes
No
No supply
No
Yes
If NG, replace solenoid valve.
MEF137D
EGR valve
MEC488B
BATTERY
FUSE
TROUBLE DIAGNOSES 16
CD20T
EGRC-Solenoid Valve (Cont’d)
EC-135
Brake Switch
The ECM receives signals from two brake switches. One is a
conventional brake lamp switch, the other is referred to as a
redundant (RDNT) brake switch.
In case the accelerator pedal does not return to the idle position
(pedal sticks), the driver will react by depressing the brake. In
this (emergency) situation, the ECM will disregard the accelera-
tor pedal signal and bring back the engine speed to 1200 rpm.
Malfunction is detected when ...
Check Items
(Possible Cause)
●
Brake switch circuits are open or shorted.
●
Harness or connectors
(Brake switch circuits are open or shorted.)
●
Stop lamp switch
●
RDNT brake switch
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE
1)
Turn ignition switch to “ON” position and select “DATA
MONITOR” mode with CONSULT-II.
2)
Depress brake pedal for at least 1 minute.
TROUBLE DIAGNOSES 17
CD20T
EC-136
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