Ignition Timing: Adjustments

IGNITION TIMING CHECK
1. Before inspection, set the vehicle to the following condition.
- Engine coolant temperature: 80-95°C (176-203°F)
- Lights and all accessories: OFF
- Transmission: P range
2. Insert a paper clip into the engine speed detection connector (blue), and then connect a tachometer to the paper clip.

NOTE:
Do not use the scan tool. If the scan tool is connected to the data link connector, the ignition timing will be unchanged instead of reverting to the basic ignition timing.

3. Set the timing light.
4. Start the engine and run it at idle.
5. Check the curb idle speed.

Standard value: 700±100 r/min

NOTE:
The reading on the tachometer indicates one-third of the actual engine speed. In other words, the actual engine speed is three times the indication on the tachometer.

6. Turn the ignition switch to OFF.
7. Disconnect the waterproof female connector from the ignition timing adjustment connector (brown).
8. Use a jumper wire to ground the ignition timing adjustment terminal.

NOTE:
Grounding this terminal sets the engine to the basic ignition timing.

9. Start the engine and run it at idle.
10. Check the basic ignition timing.

Standard value: 5°BTDC±3°

11. If the ignition timing is not within the standard value range, refer crankshaft position sensor.
12. Disconnect the jumper wire connected at step (8).
13. Check that the idling ignition timing is at the correct value.

Standard value: Approx. 15°BTDC

NOTE:
1. Ignition timing is variable within about ±7° even under normal operating conditions.
2. And it is automatically further advanced by about 5° from 15°BTDC at higher altitudes.