Nissan Teana J32. Manual — part 454
EC-354
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
1.
Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2.
Disconnect VIAS control solenoid valve 1 harness connector.
3.
Start engine.
4.
When revving engine up to 5,000 rpm quickly.
5.
Check vacuum existence under the following conditions.
Is the inspection result normal?
YES
>> Repair or replace power valve actuator 1.
NO
>> GO TO 3.
3.
CHECK VACUUM TANK
1.
Stop engine and disconnect vacuum hose connected to intake manifold collector.
2.
Start engine and let it idle.
3.
Check vacuum existence from intake manifold collector.
Does vacuum existence from the intake manifold collector?
YES
>> GO TO 4.
NO
>> Replace intake manifold collector.
4.
CHECK VACUUM HOSE
1.
Stop engine.
2.
Check vacuum hose for cracks, clogging, improper connection
or disconnection. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair hoses or tubes.
5.
CHECK VIAS CONTROL SOLENOID VALVE 1
EC-286, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace VIAS control solenoid valve 1.
6.
CHECK VACUUM EXISTENCE-II
With CONSULT-III
1.
Stop engine and disconnect vacuum hose connected to power valve actuator 2.
2.
Start engine and let it idle.
3.
Perform “VIAS S/V-2” in “ACTIVE TEST” mode with CONSULT-III.
4.
Turn VIAS control solenoid valve 2 “ON” and “OFF”, and check vacuum existence under the following con-
ditions.
Without CONSULT-III
1.
Stop engine and disconnect vacuum hose connected to power valve actuator 2.
2.
Disconnect VIAS control solenoid valve 1 harness connector.
3.
Start engine.
Condition
Operation
Idle
Existed
When revving engine up to 5,000 rpm quickly
Not existed
SEF109L
VIAS S/V 2
Vacuum
ON
Existed
OFF
Not existed
VARIABLE INDUCTION AIR SYSTEM
EC-355
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
4.
When revving engine up to 5,000 rpm quickly.
5.
Check vacuum existence under the following conditions.
Is the inspection result normal?
YES
>> Repair or replace power valve actuator 2.
NO
>> GO TO 7.
7.
CHECK VACUUM HOSE
1.
Stop engine.
2.
Check vacuum hose for cracks, clogging, improper connection
or disconnection. Refer to
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair hoses or tubes.
8.
CHECK VIAS CONTROL SOLENOID VALVE 2
EC-289, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace VIAS control solenoid valve 2.
9.
CHECK INTERMITTENT INCIDENT
GI-35, "Intermittent Incident"
.
>> INSPECTION END
Diagnosis Procedure (VQ25DE engine)
INFOID:0000000003896867
1.
INSPECTION START
Confirm the malfunctioning system (power valve). Refer to
EC-353, "Component Function Check (VQ25DE
.
Which system is related to the incident?
>> GO TO 2.
2.
CHECK VACUUM EXISTENCE
With CONSULT-III
1.
Stop engine and disconnect vacuum hose connected to power valve actuator.
2.
Start engine and let it idle.
3.
Perform “VIAS S/V-1” in “ACTIVE TEST” mode with CONSULT-III.
4.
Turn VIAS control solenoid valve “ON” and “OFF”, and check vacuum existence under the following condi-
tions.
Without CONSULT-III
Condition
Operation
Idle
Existed
When revving engine up to 5,000 rpm quickly
Not existed
SEF109L
VIAS S/V
Vacuum
ON
Existed
OFF
Not existed
EC-356
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
VARIABLE INDUCTION AIR SYSTEM
1.
Stop engine and disconnect vacuum hose connected to power valve actuator 1.
2.
Disconnect VIAS control solenoid valve harness connector.
3.
Start engine.
4.
When revving engine up to 5,000 rpm quickly.
5.
Check vacuum existence under the following conditions.
Is the inspection result normal?
YES
>> Repair or replace power valve actuator.
NO
>> GO TO 3.
3.
CHECK VACUUM TANK
1.
Stop engine and disconnect vacuum hose connected to intake manifold collector.
2.
Start engine and let it idle.
3.
Check vacuum existence from intake manifold collector.
Does vacuum existence from the intake manifold collector?
YES
>> GO TO 4.
NO
>> Replace intake manifold collector.
4.
CHECK VACUUM HOSE
1.
Stop engine.
2.
Check vacuum hose for cracks, clogging, improper connection
or disconnection. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair hoses or tubes.
5.
CHECK VIAS CONTROL SOLENOID VALVE
EC-286, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace VIAS control solenoid valve.
6.
CHECK INTERMITTENT INCIDENT
GI-35, "Intermittent Incident"
>> INSPECTION END
Condition
Operation
Idle
Existed
When revving engine up to 5,000 rpm quickly
Not existed
SEF109L
ECM
EC-357
< ECU DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ECU DIAGNOSIS
ECM
Reference Value
INFOID:0000000003856868
VALUES ON THE DIAGNOSIS TOOL
Remarks:
l
Specification data are reference values.
l
Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show
the specification data in spite of the ignition timing not being adjusted to the specification data. This IGN TIM-
ING monitors the data calculated by the ECM according to the signals input from the camshaft position sensor
and other ignition timing related sensors.
Monitor Item
Condition
Values/Status
ENG SPEED
Run engine and compare CONSULT-III value with the tachometer indication.
Almost the same speed as
the tachometer indication.
MAS A/F SE-B1
See
.
B/FUEL SCHDL
See
.
A/F ALPHA-B1
See
.
A/F ALPHA-B2
See
.
COOLAN TEMP/S
• Engine: After warming up
More than 70
°
C (158
°
F)
A/F SEN1 (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
Fluctuates around 2.2 V
A/F SEN1 (B2)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
Fluctuates around 2.2 V
HO2S2 (B1)
• Revving engine from idle to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
0 - 0.3 V
←→
Approx. 0.6 -
1.0 V
HO2S2 (B2)
• Revving engine from idle to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
0 - 0.3 V
←→
Approx. 0.6 -
1.0 V
HO2S2 MNTR (B1)
• Revving engine from idle to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
LEAN
←→
RICH
HO2S2 MNTR (B2)
• Revving engine from idle to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
LEAN
←→
RICH
VHCL SPEED SE
• Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.
Almost the same speed as
speedometer indication
BATTERY VOLT
• Ignition switch: ON (Engine stopped)
11 - 14 V
ACCEL SEN 1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0 V
Accelerator pedal: Fully depressed
4.2 - 4.8 V
ACCEL SEN 2*
1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.5 - 1.0 V
Accelerator pedal: Fully depressed
4.2 - 4.8 V
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