Nissan Maxima Service and Repair Manual: Intake Manifold Collector

Removal and Installation

1. Intake manifold collector
2. Intake manifold collector gasket
3. Electric throttle control actuator gasket
4. Electric throttle control actuator
1. Refer to INSTALLATION
2. Refer to INSTALLATION

WARNING: To avoid the danger of being scalded, do not drain the coolant when the engine is hot.

CAUTION: Do not remove power valves.

NOTE: When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

REMOVAL

1. Remove the cowl top, lower cowl top extension and lower cowl top extension brace. Refer to EXT-21, "Removal and Installation".
2. Remove the engine room cover. Refer to EM-23, "Removal and Installation".
3. Remove front air duct and air duct hose and resonator assembly. Refer to EM-24, "Removal and Installation".
4. Remove the electric throttle control actuator bolts in the reverse order as shown and remove the electric throttle control actuator and position aside.

CAUTION:

• Handle carefully to avoid any shock to the electric throttle control actuator.
• Do not disassemble.

5. Disconnect the following:

• Power brake booster vacuum hose
• PCV hose
• Electric throttle control actuator electrical connector
• EVAP canister purge hose

CAUTION: Cover any engine openings to avoid the entry of any foreign material.

6. Remove the EVAP canister purge volume solenoid valve bracket bolt. Position the valve aside.
7. Loosen the intake manifold collector bolts in the order as shown using power tool, and remove the intake manifold collector and gasket.
8. If necessary remove the following components:

• VIAS control solenoid valve
• EVAP canister purge volume control solenoid valve

INSTALLATION

Installation is in the reverse order of removal.

CAUTION: Do not reuse intake manifold collector gasket or electric throttle control actuator gasket.

• Tighten intake manifold collector bolts in the order as shown.

• Tighten electric throttle control actuator bolts in the order shown.

NOTE: After installation, it is necessary to re-calibrate the electric throttle control actuator as follows:

1. . Perform the ″Throttle Valve Closed Position Learning″ when harness connector of the electric throttle control actuator is disconnected. Refer to EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".
2. Perform the ″Idle Air Volume Learning″ when the electric throttle control actuator is replaced. Refer to EC- 21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement".