INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5]

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Warning
•  A hot engine and intake air system can cause severe burns. Turn off the engine and wait until they are cool before removing the intake air system.
•  Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause serious injury or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the “Fuel Line Safety Procedure”.
Caution
•  The PCM is built into the air cleaner cover. Applying excessive pressure to the cover could damage the PCM. Be careful not to put your hands on the PCM during the removal/installation.
•  Removing the PCM from the air cleaner could damage the sealing or the circuitry. Do not remove the PCM from the air cleaner.
•  Removing the fresh-air duct from the air cleaner case may damage the fresh-air duct. Remove the fresh-air duct and the air cleaner case as a single unit except when the fresh-air duct is to be replaced with a new one.

Without Set Bolt

1.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [MZR 1.3, MZR 1.5].)

2.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

3.  Disconnect the wiring harness.

4.  Remove in the order indicated in the table.

5.  Install in the reverse order of removal.

6.  Complete the “AFTER SERVICE PRECAUTION”. (See AFTER SERVICE PRECAUTION [MZR 1.3, MZR 1.5].)

7.  Add the engine coolant to the cooling system filler neck and the coolant reserve tank to replace that during servicing.

8.  Inspect the engine coolant level. (See ENGINE COOLANT LEVEL INSPECTION [MZR 1.3, MZR 1.5].)

9.  Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION [MZR 1.3, MZR 1.5].)

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1
Fresh-air duct
2
PCM connector cover
3
PCM connector
(See PCM Connector Connection Note.)
4
Air cleaner cover
(See Air Cleaner Cover Removal Note (Without Set Bolt).)
5
Air cleaner element
6
Air cleaner case
7
Ventilation hose (air hose side)
8
Air hose
(See Air Hose Removal Note.)
9
Water hose
(See Water Hose Removal Note.)
(See Water Hose Installation Note.)
10
Throttle body
11
Evaporative hose (to purge solenoid valve)
12
Vacuum hose (to master back)
13
PCV hose (intake manifold side)
14
Intake manifold
(See Intake Manifold Removal Note.)


With Set Bolt

1.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [MZR 1.3, MZR 1.5].)

2.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

Caution
•  New set bolts are required when reinstalling the PCM connector cover. Perform Step 4 only when removing the air cleaner cover.

3.  When removing the air cleaner cover, perform the following procedure and go to Step 6.

(1)  Remove the PCM connector cover. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)
(2)  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5])
(3)  Disconnect the MAF/IAT sensor connector.
(4)  Remove the air cleaner cover.

4.  Set the air cleaner cover out of the way.

5.  Disconnect the wiring harness.

6.  Remove in the order indicated in the table.

7.  Install in the reverse order of removal.

8.  Complete the “AFTER SERVICE PRECAUTION”. (See AFTER SERVICE PRECAUTION [MZR 1.3, MZR 1.5].)

9.  Add the engine coolant to the cooling system filler neck and the coolant reserve tank to replace that during servicing.

10.  Inspect the engine coolant level. (See ENGINE COOLANT LEVEL INSPECTION [MZR 1.3, MZR 1.5].)

11.  Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION [MZR 1.3, MZR 1.5].)

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1
Fresh-air duct
2
Air cleaner element
3
Air cleaner case
4
Ventilation hose (air hose side)
5
Air hose
(See Air Hose Removal Note.)
6
Water hose
(See Water Hose Removal Note.)
(See Water Hose Installation Note.)
7
Throttle body
8
Evaporative hose (to purge solenoid valve)
9
Vacuum hose (to master back)
10
PCV hose (intake manifold side)
11
Intake manifold
(See Intake Manifold Removal Note.)


Air Cleaner Cover Removal Note (Without Set Bolt)

1.  Remove the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

2.  Remove the air cleaner cover.


Air Hose Removal Note

1.  Move the purge solenoid valve slightly out of the way without removing the air hose.


Water Hose Removal Note

Warning
•  Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while the pressure escapes.
•  When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.
Caution
•  Do not plug the water hose with a sharp-edged object. Otherwise, the hose could be damaged.

1.  Wrap a clean cloth around the cooling system cap and release the pressure by loosening the cap slowly.

2.  Remove the water hose from the throttle body and plug the water hose quickly.


Intake Manifold Removal Note

1.  Remove the fuel injector and fuel distributor as a single unit. (See FUEL INJECTOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

2.  Remove the EGR pipe (intake manifold side). (See EGR PIPE REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

3.  Remove the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)

4.  Remove all clips for securing wiring harnesses from the intake manifold.

5.  Remove the intake manifold.


Water Hose Installation Note

1.  Remove the plug from the water hose and install the water hose to the throttle body quickly.


PCM Connector Connection Note

Caution
•  If the PCM connector is inserted at an angle and the lever is moved, the connector could be damaged. Verify that the PCM connector is inserted straight.
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1.  Verify that the PCM connector lever is tilted towards the wiring harness side as shown in the figure.

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2.  Insert the PCM connector straight until it contacts the PCM and verify that the lever reverts upward naturally.

3.  Push the lever until a click is heard.

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