Nissan Altima L32. Instruction — part 597
VARIABLE INDUCTION AIR SYSTEM
EC-1509
< COMPONENT DIAGNOSIS >
[VQ35DE]
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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.
4. Rev engine quickly up to approximately 5,000 rpm.
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-1432, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace VIAS control solenoid valve 2.
9.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
>> INSPECTION END
VIAS S/V-2
Vacuum
ON
Existed
OFF
Not existed
Condition
Vacuum
Idle
Existed
Rev engine quickly up to approximately 5,000 rpm
Not existed
SEF109L
EC-1510
< ECU DIAGNOSIS >
[VQ35DE]
ECM
ECU DIAGNOSIS
ECM
Reference Value
INFOID:0000000004362391
VALUES ON THE DIAGNOSIS TOOL
Remarks:
z
Specification data are reference values.
z
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
.
B/FUEL SCHDL
.
A/F ALPHA-B1
.
A/F ALPHA-B2
.
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
0.65 - 0.87 V
Accelerator pedal: Fully depressed
More than 4.3 V
ACCEL SEN 2*
1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.56 - 0.96 V
Accelerator pedal: Fully depressed
More than 4.0 V
ECM
EC-1511
< ECU DIAGNOSIS >
[VQ35DE]
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TP SEN 1-B1
• Ignition switch: ON
(Engine stopped)
• Selector lever position: D (CVT),
1st (M/T)
Accelerator pedal: Fully released
More than 0.36 V
Accelerator pedal: Fully depressed
Less than 4.75 V
TP SEN 2-B1*
1
• Ignition switch: ON
(Engine stopped)
• Selector lever position: D (CVT),
1st (M/T)
Accelerator pedal: Fully released
More than 0.36 V
Accelerator pedal: Fully depressed
Less than 4.75 V
FUEL T/TMP SE
• Ignition switch: ON
Indicates fuel tank tempera-
ture
INT/A TEMP SE
• Ignition switch: ON
Indicates intake air tempera-
ture
EVAP SYS PRES
• Ignition switch: ON
Approx. 1.8 - 4.8 V
FUEL LEVEL SE
• Ignition switch: ON
Depending on fuel level of
fuel tank
START SIGNAL
• Ignition switch: ON
→ START → ON
OFF
→ ON → OFF
CLSD THL POS
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed
OFF
AIR COND SIG
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
P/N POSI SW
• Ignition switch: ON
Selector lever position: P or N (CVT),
neutral (M/T)
ON
Selector lever position: Except above
OFF
PW/ST SIGNAL
• Engine: After warming up, idle the
engine
Steering wheel: Not being turned
OFF
Steering wheel: Being turned
ON
LOAD SIGNAL
• Ignition switch: ON
Rear window defogger switch: ON
and/or
Lighting switch: 2nd position
ON
Rear window defogger switch and lighting
switch: OFF
OFF
IGNITION SW
• Ignition switch: ON
→ OFF → ON
ON
→ OFF → ON
HEATER FAN SW
• Engine: After warming up, idle the
engine
Heater fan switch: ON
ON
Heater fan switch: OFF
OFF
BRAKE SW
• Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
INJ PULSE-B1
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
INJ PULSE-B2
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
IGN TIMING
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
7 - 17
° BTDC
2,000 rpm
25 - 45
° BTDC
Monitor Item
Condition
Values/Status
EC-1512
< ECU DIAGNOSIS >
[VQ35DE]
ECM
CAL/LD VALUE
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
5 - 35%
2,500 rpm
5 - 35%
MASS AIRFLOW
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
2.0 - 6.0 g·m/s
2,500 rpm
7.0 - 20.0 g·m/s
PURG VOL C/V
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
(Accelerator pedal: Not depressed even
slightly, after engine starting.)
0%
2,000 rpm
—
INT/V TIM (B1)
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
−5 - 5°CA
2,000 rpm
Approx. 0 - 30
°CA
INT/V TIM (B2)
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
−5 - 5°CA
2,000 rpm
Approx. 0 - 30
°CA
INT/V SOL (B1)
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
0 - 2%
2,000 rpm
Approx. 0 - 50%
INT/V SOL (B2)
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
0 - 2%
2,000 rpm
Approx. 0 - 50%
VIAS S/V-1
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Rev engine quickly up to approximately
5,000 rpm
OFF
→ON → OFF
VIAS S/V-2
• Engine: After warming up
• Selector lever position: P or N
(CVT), neutral (M/T)
• Air conditioner switch: OFF
• No load
Rev engine quickly up to approximately
5,000 rpm
OFF
→ON → OFF
AIR COND RLY
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates)
ON
ENGINE MOUNT
• Engine: After warming up
Below 950 rpm
IDLE
Above 950 rpm
TRVL
FUEL PUMP RLY
• For 1 second after turning ignition switch: ON
• Engine running or cranking
ON
• Except above
OFF
VENT CONT/V
• Ignition switch: ON
OFF
THRTL RELAY
• Ignition switch: ON
ON
Monitor Item
Condition
Values/Status
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