ECU information available
Actuator test: no OK
Measure parameters: yes
Oxygen sensor test: yes
Characterised by
- Ageing: low stop
- Ageing: high stop
- Ageing period
Checks to be carried out if fault is present
Ageing: low stop, high stop, period
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running: vehicle driving at different engine speeds, steady speeds total time of at least 1 minute(s) in gear no. 4 at 50 km/h total time of at least 2 minute(s) in gear no. 5 at 70 km/h | are the following faults present? (assembly): - automatic mixture adjustment - upstream oxygen sensor, replace the upstream oxygen sensor if the fault is the only one present check: air leak on the exhaust if correct: replace the upstream oxygen sensor verify (engine hot at idle): - oscillation period approx. 1 second(s) - oscillation amplitude (U: more than 0,1 V, less than 0,9 V, between terminals 13 and 40 on the control unit) |