Removal and Installation

INTAKE MANIFOLD COLLECTOR

Removal and Installation


WARNING:
Do not drain the coolant when the engine is hot to avoid the danger of being scalded.

CAUTION:
- The gasket for intake manifold collector (upper) is secured with intake manifold collector (lower)
bolt. When replacing the intake manifold collector (upper) gasket, the lower gasket must also be replaced.
- 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


CAUTION:
Cover engine openings to avoid the entry of any foreign material.
1.Disconnect the negative battery terminal. Refer to "Exploded View" Exploded View.
Revision: March 20122013 Infiniti JX
2.Remove the cowl top grille and the lower cowl top extension. Refer to "Exploded View" Exploded View.
3.Remove the engine room cover. Refer to "Removal and Installation" Exploded View.
4.Remove the air cleaner case (upper), air cleaner case (lower), and air duct and resonator assembly. Refer to "Removal and Installation" Removal and Installation.
5.Disconnect the power brake booster vacuum hose.
6.Disconnect the PCV hose.
7.Disconnect the electric throttle control actuator electrical harness connector.
8.Disconnect the EVAP canister purge hose.





9.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.
10.Remove the VIAS control solenoid valve.
11.Remove the EVAP canister purge volume control solenoid valve.





12.Loosen the intake manifold collector bolts in the order as shown using power tool, and remove the intake manifold collector and gasket.

INSTALLATION

Installation is in the reverse order of removal.





- Tighten intake manifold collector bolts in the order as shown.
Revision: March 20122013 Infiniti JX





- Tighten electric throttle control actuator bolts in the order shown.
NOTE:
After installation, 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 "Work Procedure" Work Procedure.
2.Perform the "Idle Air Volume Learning" when the electric throttle control actuator is replaced. Refer to EC160, "Work Procedure".
Revision: March 20122013 Infiniti JX