Ignition Timing: Adjustments

Pre-Adjustment Conditions
- Engine coolant temperature: 80-95°C (176-203°F)
- Lights and all accessories: OFF
- Transmission: Neutral (P for A/T)

Engine Speed Detection Connector:

- Insert a paper clip into the engine speed detection connector (blue), and then connect a tachometer to the paper clip.
- Connect a primary voltage detection-type 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 standard ignition timing.

- Connect a timing light
- Start the engine and run it at idle
- Check that the idle speed is at the standard value

Standard value: 7OO ±1OO rpm

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.

Ignition Timing Adjustment Terminal:

- Disconnect the waterproof female connector from the ignition timing adjustment connector (brown).
- Use a jumper wire to ground the ignition timing adjustment terminal.

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

- Start the engine and run it at idle
- Check the standard ignition timing

Standard value: 5° BTDC ±3°

- If the ignition timing is not within the standard value range, inspect the crankshaft position sensor.
- Disconnect the jumper wire connected previously.
- Check that the idling ignition timing is at the correct value.

Standard value: Approx. 15° BTDC

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