[1] Pump current (G3/2 (O2 sensor upstream of KAT)) of oxygen sensor: Short circuit to positive

[1] Pump current (G3/2 (O2 sensor upstream of KAT)) of oxygen sensor: Short circuit to positive

Test 1: Check component G3/2 (O2 sensor upstream of KAT).

Test 2: Check component G3/2 (O2 sensor upstream of KAT).

1. Check component G3/2 (O2 sensor upstream of KAT).
Check component G3/2 (O2 sensor upstream of KAT) using actual value.
Test prerequisite

- Operate parking brake.
- Move transmission into Neutral position.
- Engine running
- O2 sensor is at operating temperature.
Status of the relevant actual values:
- Transmission neutral contact:Warning!
- Engine speed:Warning! Communication with ECU required.
Note

- The engine speed is increased to 1500 rpm for max. 3 min so that the O2 sensor reaches operating temperature.
Continue with button F2

2. Check component G3/2 (O2 sensor upstream of KAT).
Check component G3/2 (O2 sensor upstream of KAT) using actual value.
Test prerequisite

- Operate parking brake.
- Move transmission into Neutral position.
- Engine running
- O2 sensor is at operating temperature.
Status of the relevant actual values:
- Transmission neutral contact:Warning!
- Engine speed:Warning! Communication with ECU required.
Note

- The engine speed is increased to 1500 rpm for max. 3 min so that the O2 sensor reaches operating temperature.
Continue with button F2