Ignition Timing: Testing and Inspection

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1. Start the engine and run it at idle.
2. Warm up the engine to normal operating temperature.

3. Connect the SSTs (WDS or equivalent) to the DLC-2.
4. Select the PID/DATA MONITOR AND RECORD function on the WDS or equivalent display.
5. Select the SPARKADV PID.
6. Verify that SPARKADV PID is within the specification.

Specification: BTDC 4° - 16° (10° ± 6°)

7. Increase the engine speed and verify that the SPARKADV PID value is advanced.
- If it is not advanced, inspect the following.
- CKP sensor and related harness (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION.)
- MAF sensor and related harness (See MASS AIRFLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION.)