| | Results of the tests |
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Connect the diagnostic equipment (Examiner or Examiner Plus) and record the errors and environmental parameters.Check for the 'Mixture strength' error only | End of diagnosis | The 'Upstream Lambda signal' error is present | Continue according to the instructions for the See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR |
| Only the 'Mixture strength', 'Misfire', 'Catalyzer' and/or 'Downstream Lambda signal' errors are present | Continue to Step 1 |
| Other errors are present | Identify and eliminate the cause of the problem |
| 1 | ERROR DETAIL CHECK | All OK | Problems met | Operation |
|---|
| Check the detail of the 'Mixture strength' error | End of diagnosis | The detail is 'Above the upper limit' | Continue according to the instructions for the See table Z52 LEAN FUEL SYSTEM |
| The detail is 'Below the lower limit' | Continue according to the instructions for the See table Z51 RICH FUEL SYSTEM |