October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Timing Advance System
ECM controls ignition timing advance based upon sensor input signals that reflect ignition timing needs. If timing problems are experienced, inspect input signals listed below for proper operation. To check input signals, see ENGINE SENSORS & SWITCHES or ECM pin voltage charts in PIN VOLTAGE CHARTS
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- A/C Clutch Signal
- Closed Throttle Position Switch
- Crankshaft Position Sensor
- Engine Coolant Temperature
- Ignition (START) Signal
- Mass Airflow Sensor
- Park/Neutral Switch
- Power Steering Pressure Switch
- Throttle Position Sensor
- Vehicle Speed Sensor