Nissan Altima L32. Manual - part 597

VARIABLE INDUCTION AIR SYSTEM

EC-1509

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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 

EC-1133, "System Diagram"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair hoses or tubes.

8.

CHECK VIAS CONTROL SOLENOID VALVE 2

Refer to 

EC-1432, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace VIAS control solenoid valve 2.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

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

See 

EC-1167, "Description"

.

B/FUEL SCHDL

See 

EC-1167, "Description"

.

A/F ALPHA-B1

See 

EC-1167, "Description"

.

A/F ALPHA-B2

See 

EC-1167, "Description"

.

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

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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

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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