Tune-up and Engine Performance Checks: Testing and Inspection
ENGINE TUNE-UPEngine Tune-up Preparation
1. Verify the following:
^ AT: Selector lever is in P or N position.
^ MT: Shift lever is in neutral 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
AT: 760 - 860 rpm
MT: 750 - 850 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.
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".
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.
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".
Standard
Idle Mixture Inspection
1. Verify that idle speed and ignition timing are within the specification.
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".