ENGINE TUNE-UP

Engine Tune-up Preparation

1. Verify the following:

• MT: Shift lever is in neutral position.

• AT: Selector lever is in P or N position.

2. Turn off all electrical loads (A/C).

3. Warm up the engine.

(1) Increase the engine speed to 2,500-3,000 rpm until cooling fans start running.

(2) When the cooling fans start running, release the accelerator pedal and wait until the cooling fans stop running.

4. Connect the WDS or equivalent to the DLC-2.

5. Verify that the idling speed (WDS: RPM PID) is within the specification using the WDS or equivalent function.

Standard

MT: 750-850 rpm

AT: 760-860 rpm

Ignition Timing Inspection

Note

• The ignition timing cannot be adjusted.

• The WDS or equivalent is required to verify the ignition timing.

1. Complete the engine tune-up preparation. (SeeEngine Tune-up Preparation.)

2. Connect the timing light to the front rotor housing on the leading side.

3. Turn the test mode on using the test simulation function.

4. Verify that the eccentric shaft position plate alignment mark (white) and the front cover mark (white) is aligned.

Note

• When using the WDS or equivalent, verify that the ignition (WDS: SPARK-L) is -5°.

• If there is malfunction, refer to "ENGINE SYMPTOM TROUBLESHOOTING". (See ENGINE SYMPTOM TROUBLESHOOTING.)

5. Turn the test mode off using the test simulation function.

Idle Speed Inspection

Note

• The idling speed cannot be adjusted.

• The WDS or equivalent is required to verify the idling speed.

1. Complete the engine tune-up preparation. (SeeEngine Tune-up Preparation.)

2. Turn the test mode on using the "test" simulation function.

3. Verify that the engine speed using the RPM DATA monitor function is as follows.

• If there is malfunction, refer to "ENGINE SYMPTOM TROUBLESHOOTING". (See ENGINE SYMPTOM TROUBLESHOOTING.)

Standard

Load status	Idling speed (rpm) Neutral position (MT), N, D, R position (AT)
	MT	AT
		N range	D range	R range
No load	750-850	760-860	740-840	730-830
Electrical loads on*1	750-850	780-880	760-860	730-830
A/C on (standard)	760-860	780-880	760-860	730-830
A/C on (standard)+electrical loads on*1	790-890	780-880	760-860	730-830
A/C on (heavy load)	790-890	800-900	780-880	780-880

^*1 :

The headlight, rear window defroster, blower fan (2-step or more) are on.

Idle Mixture Inspection

1. Verify that idle speed and ignition timing are within the specification.

(See Idle Speed Inspection.)

(See Ignition Timing Inspection.)

2. Insert an exhaust gas analyzer into the tailpipe.

3. Verify that the CO and HC concentration are within the regulation.

• If there is malfunction, refer to "ENGINE SYMPTOM TROUBLESHOOTING". (See ENGINE SYMPTOM TROUBLESHOOTING.)