Subaru Impreza 2004 User Manual download pdf (Page 36)

ME(H4DOTC)-35

MECHANICAL

Idle Speed

3. Idle Speed

A: INSPECTION

1. USING SUBARU SELECT MONITOR

1) Before checking the idle speed, check the fol-

lowing:

(1) Ensure the air cleaner element is free from

clogging, ignition timing is correct, spark plugs

are in good condition, and that the hoses are

connected properly.

(2) Ensure the malfunction indicator light does

not illuminate.

2) Warm-up the engine.

3) Stop the engine, and then turn the ignition switch

to OFF.

4) Insert the cartridge to SUBARU SELECT MONI-

TOR.

5) Connect the SUBARU SELECT MONITOR to

data link connector.

6) Turn the ignition switch to ON, and SUBARU

SELECT MONITOR switch to ON.

7) Select the {2. Each System Check} in Main

Menu.

8) Select the {Engine Control System} in Selection

Menu.

9) Select the {1. Current Data Display & Save} in

Engine Control System Diagnosis.

10) Select the {1.12 Data Display} in Data Display

Menu.

11) Start the engine, and then read the engine idle

speed.

12) Check the idle speed when unloaded. (With

headlights, heater fan, rear defroster, radiator fan,

air conditioning, etc. OFF)

Idle speed [No load and gears in neutral]:

Except for Australia model

700

±±

100 rpm

Australia model (Except for STi model)

650

±±

50 rpm (MT model)

700

±±

50 rpm (AT model)

13) Check the idle speed when loaded. (Turn the

air conditioning switch to “ON” and operate the

compressor for at least 1 minute before measure-

ment.)

Idle speed [A/C “ON”, no load and gears in neu-

tral]:

Except for Australia model

800

±±

150 rpm

Australia model (Except for STi model)

800

±±

50 rpm (MT model)

820

±±

50 rpm (AT model)

NOTE:

As idle speed is controlled by the automatic adjust-

ment type, it can not be adjusted manually. If the

idle speed is out of specifications, refer to General

On-board Diagnosis Table under “Engine Control

System”. <Ref. to EN(H4DOTC)(diag)-2, Basic Di-

agnostic Procedure.>

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