Nissan Maxima Service and Repair Manual: Variable induction air system
Description
Power Valves 1 and 2
The power valves 1 and 2 are installed in intake manifold collector and used to
control the suction passage of
the variable induction air control system. They are set in the fully closed or
fully opened position by the power
valve actuators 1 and 2 operated by the vacuum stored in the vacuum tank. The
vacuum to power valve actuators
is controlled by the VIAS control solenoid valves 1 and 2.
Component Function Check
1.CHECK OVERALL FUNCTION-I
With CONSULT
- Start engine and warm it up to the normal operating temperature.
- Perform "VIAS S/V-1" in "ACTIVE TEST" mode with CONSULT.
- Turn VIAS control solenoid valve 1 "ON" and "OFF", and check that
power valve actuator 1 rod moves.

- Power valve actuator 1
- Power valve actuator 1 rod
- Power valve actuator 2 rod
- Power valve actuator 2
: Vehicle front
Without CONSULT
- Start engine and warm it up to the normal operating temperature.
- When revving engine up to 5,000 rpm quickly.
- Check that power valve actuator 1 rod moves under the following
conditions.

- Power valve actuator 1
- Power valve actuator 1 rod
- Power valve actuator 2 rod
- Power valve actuator 2
: Vehicle front

2.CHECK OVERALL FUNCTION-II
With CONSULT
- Perform "VIAS S/V-2" in "ACTIVE TEST" mode with CONSULT.
- Turn VIAS control solenoid valve 2 "ON" and "OFF", and check that
power valve actuator 2 rod moves.

- Power valve actuator 1
- Power valve actuator 1 rod
- Power valve actuator 2 rod
- Power valve actuator 2
: Vehicle front
Without CONSULT
- When revving engine up to 5,000 rpm quickly.
- Check that power valve actuator 2 rod moves under the following
conditions.

- Power valve actuator 1
- Power valve actuator 1 rod
- Power valve actuator 2 rod
- Power valve actuator 2
: Vehicle front

Diagnosis Procedure
1.INSPECTION START
Confirm the malfunctioning system (power valve 1 or power valve 2).
2.CHECK VACUUM EXISTENCE-I
With CONSULT
- Stop engine and disconnect vacuum hose connected to power valve
actuator 1.
- Start engine and let it idle.
- Perform "VIAS S/V-1" in "ACTIVE TEST" mode with CONSULT.
- Turn VIAS control solenoid valve 1 "ON" and "OFF", and check
vacuum existence under the following conditions.

Without CONSULT
- Stop engine and disconnect vacuum hose connected to power valve
actuator 1.
- Disconnect VIAS control solenoid valve 1 harness connector.
- Start engine.
- When revving engine up to 5,000 rpm quickly.
- Check vacuum existence under the following conditions.

3.CHECK VACUUM TANK
- Stop engine and disconnect vacuum hose connected to intake
manifold collector.
- Start engine and let it idle.
- Check vacuum existence from intake manifold collector.
4.CHECK VACUUM HOSE
- Stop engine.
- Check vacuum hose for cracks, clogging, improper connection
or disconnection.

5.CHECK VIAS CONTROL SOLENOID VALVE 1
6.CHECK VACUUM EXISTENCE-II
With CONSULT
- Stop engine and disconnect vacuum hose connected to power valve
actuator 2.
- Start engine and let it idle.
- Perform "VIAS S/V-2" in "ACTIVE TEST" mode with CONSULT.
- Turn VIAS control solenoid valve 2 "ON" and "OFF", and check
vacuum existence under the following conditions.

Without CONSULT
- Stop engine and disconnect vacuum hose connected to power valve
actuator 2.
- Disconnect VIAS control solenoid valve 1 harness connector.
- Start engine.
- When revving engine up to 5,000 rpm quickly.
- Check vacuum existence under the following conditions.

7.CHECK VACUUM HOSE
- Stop engine.
- Check vacuum hose for cracks, clogging, improper connection
or disconnection.

8.CHECK VIAS CONTROL SOLENOID VALVE 2
9.CHECK INTERMITTENT INCIDENT
Description
The refrigerant pressure sensor is installed at the condenser of the air
conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressur ...
ECM
Reference Value
VALUES ON THE DIAGNOSIS TOOL
NOTE:
The following table includes information (items) inapplicable
to this vehicle. For information (items) applicable
to this vehi ...
Other materials:
Symptom diagnosis
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
custome ...
Preparation
Special Service Tool
The actual shapes of the tools may differ from those illustrated here.
Commercial Service Tool
Sealant and/or Lubricant
...
Front disc brake
BRAKE PAD
BRAKE PAD : Inspection of Pad
PAD WEAR
Check pad thickness from the inspection hole on cylinder body.
Check using a scale if necessary
DISC ROTOR
DISC ROTOR : Inspection of Rotor
VISUAL
Check surface of disc rotor for uneven wear, cracks, and serious damage.
Replace as ne ...