| | 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 inSee
table Z56 |
| 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 | SIGNAL PLAUSIBILITY CHECK | All OK | Problems met | Operation |
|---|
| Checking
the plausibility of the flow meter signal by carrying out the Test See Test 1056BX MAP/flow meter signal plausibility | Continue to Step 2 | The signal is not plausible | Replace the flow meter Op. 1056B12 |
| 2 | 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' | See table Z52 |
| The detail is 'Air leaks downstream of flow meter' | See table Z52 |
| The detail is 'Below the lower limit' | See table Z51 |