2006 Chevrolet Optra (CANADA) L4-2.0LFACTORY OEM SERVICE PROCEDURE

Scan Tool Data List




Scan Tool Data List

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.

Use the Engine Scan Tool Data List only after the following conditions are determined:

* The Diagnostic System Check - Engine Controls is completed.
* There are no DTCs.
* The on-board diagnostics are functioning correctly.

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

Important: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in misdiagnosis and unnecessary parts replacement.


Only the parameters listed below are referenced in this service information for use in diagnosis.

The column labeled Data List indicates where a parameter is located on the scan tool. Review the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:
All
- The Parameter is in all data lists indicated below.

Eng
- Engine Data

EGR
- EGR Data

EVAP
- EVAP Data

FT
- Fuel Trim Data

HO2S
- O2S/HO2S Data

MF
- Misfire Data

TAC
- Throttle Actuated Control Data

CC
- Cruise Control Data

CH
- Cooling/HVAC Data

IPC
- IPC Data

FF
- Freeze Frame Data

FR
- Failure Records Data

Factory service manual diagram




Factory service manual diagram




Factory service manual diagram




Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.