PID Value Charts: Notes

Ensure following conditions are met before comparing scan tool data to typical data value found in appropriate PID value chart:

• Engine is idling unless checking a value at a specified RPM.
• Throttle is closed unless checking a value at a specified RPM.
• Vehicle is in Park or Neutral.
• Vehicle is operating in closed loop.
• Vehicle accessories are turned off.

Compare actual PID values on scan tool to PID values found in appropriate PID VALUE chart. If PID value is not as specified, perform PID related system test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 3.1L CENTURY, GRAND PRIX & MALIBU article.