Ignition Timing: Testing and Inspection

ENGINE TUNE-UP
Engine Tune-up Preparation
1. Warm up the engine to normal operating temperature.
2. Shift transmission into Neutral (MT) or P position (AT).
3. Turn off all electrical loads.
- Headlight
- Blower
- Rear window defroster
4. Verify that the battery is fully charged.
5. Wait until the electrical fan stops.





6. Connect the NGS tester to the DLC-2 and select the "PID/DATA MONITOR AND RECORD" function and press TRIGGER.
7. Select "RPM" and press TRIGGER.





8. If using the SST (System selector) to turn on the test mode, perform as follows:
1. Connect the SST to the DLC.
2. Set switch A to position 1.
3. Set the test switch to SELF TEST.

CAUTION: Connecting the wrong DLC terminal may possibly cause a malfunction. Carefully connect the specified terminal only.





9. If using a jumper wire to turn on the test mode, perform the following:
1. Short the DLC terminal TEN to body GND using a jumper wire.
10. Select "START" to begin.

Ignition Timing Inspection
1. Perform "Engine Tune-up Preparation".
2. Verify that the idle speed is within the specification.
- If not as specified, adjust the idle speed.
Specification: 750 - 850 (800 ± 50) rpm
3. Connect a timing light to the high-tension lead of the No.1 cylinder.
4. Verify that the timing mark (white) on the crankshaft pulley and the T mark on the timing belt cover are aligned.
Ignition timing: BTDC 9° - 11° (10° ± 1°)(TIMING MARK [YELLOW])
5. Disconnect SST (System selector) or a jumper wire.
6. Press "CANCEL".





7. Verify that the timing mark (yellow) is within the specification.
- If not as specified, inspect the following.
- CMP sensor
- CKP sensor
- TP sensor
- ECT sensor
- Neutral switch (MT)
- Clutch switch (MT)
- TR switch (AT)
- If the devices are normal, replace the PCM.
Specification: BTDC 6 - 18°