ECU information available
Actuator test: no OK
Measure parameters: yes
Characterised by
- Short circuit to positive
- Short circuit to earth
- Open circuit
Checks to be carried out if fault is present
Short circuit to positive
| conditions under which the fault appears | checks to be made - conditions for checking |
|---|---|
| engine running; after an operating time specified in calibration sensor voltage ≥ 1,1 V | disconnect the lambda sensor (1350), ECU connected, ignition on, verify - U equal to approximately 0,4 V between terminals 10 and 28 of the 55 V.NR connector connect the lambda sensor, engine hot, engine running, verify - 0,1 V ≤ U ≤ 1 V between terminals 28 and 10 of the 55 V.NR connector disconnect the lambda sensor (1350), engine running, verify - presence of 12 V at terminal(s) 1 on connector 4 V.NR disconnect the lambda sensor (1350), verify - presence of earth at terminal 2 on the 55 V.NR connector disconnect the lambda sensor (1350), verify - 3 ≤ R ≤ 8 Ω between terminals 1 and 2 of the 4 V.NR connector |
Short circuit to earth
| conditions under which the fault appears | checks to be made - conditions for checking |
|---|---|
| engine running after an operating time specified in calibration short circuit to earth, at terminal 28/10 on the 55 V.NR connector | disconnect the lambda sensor (1350), ignition on, verify - U equal to approximately 0,4 V between terminals 10 and 28 of the 55 V.NR connector connect the lambda sensor, engine hot, engine running, verify - 0,1 V ≤ U ≤ 1 V between terminals 28 and 10 of the 55 V.NR connector supply: oxygen sensor (1350) resistance: oxygen sensor (1350) |
Open circuit
| conditions under which the fault appears | checks to be made - conditions for checking |
|---|---|
| engine running after an operating time specified in calibration open circuit on terminal(s) 28/1055 V.NR connector 55 V.NR | disconnect the lambda sensor (1350), engine running, verify - presence of 12 V at terminal(s) 1 on connector 4 V.NR connect the lambda sensor, engine hot, engine running, verify - 0,1 V ≤ U ≤ 1 V between terminals 28 and 10 of the 55 V.NR connector disconnect the lambda sensor (1350), verify - presence of earth at terminal 2 on the 4 V.NR connector disconnect the lambda sensor (1350), verify - 3 ≤ R ≤ 8 Ω between terminals 1 and 2 of the 4 V.NR connector |
+P: permanent +