Test 2: Test of Current Consumption of O2 Sensor Heater of Component G3/1 (O2 Sensor Downstream TWC)

Test of current consumption of O2 sensor heater of component G3/1 (O2 sensor downstream TWC)

Risk of injury from rotating parts!
Severe injuries from limbs being jammed or squashed may result from rotating parts and in extreme cases the limbs may be sheared off.

Rules of conduct and protective measures
Do not insert your hand into rotating parts. Wear closed and close-fitting work clothes.

Test prerequisite
- The actual value is not o.k

Test sequence
- Switch off ignition.
- Connect socket box (126-pin) to component N3/10 (ME-SFI control module).
- [F.4] 100<-->29 [M.29]
- Switch on ignition

Note: Perform the measurement only for a short time so that component G3/1 (O2 sensor downstream TWC) does not overheat.

Specified value
- Amperage [0.3...1.5] A

Question: Is the measured value okay?

No
- The measured value is not o.k.
Possible cause and remedy
- N10/1f54 (Fuse 54)
- Cable of O2 sensor heater of component G3/1 (O2 sensor downstream TWC)
- G3/1 (O2 sensor downstream TWC)
**End of test**

Yes
- The measured value is o.k
**End of test**