Aging, Cycle Duration Too Short

G3/4 (Right O2 Sensor, Before TWC [KAT]) :: Aging, Cycle Duration Too Short (P0133)

Check Component G3/4 (Right O2 Sensor, Before TWC [KAT]).

Test 1 Check Component G3/4 (Right O2 Sensor, Before TWC [KAT]) Using Actual Value.
Test 2 Test Current Consumption of Heating of Component G3/4 (Right O2 Sensor, Before TWC [KAT]).


1 Check Component G3/4 (Right O2 Sensor, Before TWC [KAT]) Using Actual Value.

Test requirement
- Engine at idle speed
- 80 °C If coolant temperature > , run engine at idle speed for about 2minutes.

Status of the relevant actual values:
- G3/4 (Right O2 sensor, before TWC [KAT]), Signal: Note! Communication with ECU required

Specified value:
- O2 sensor signal varies within the range from [-200 to +1000] m V by more than 300 m V after 2 min at idle speed.
- O2 sensor heater, before TWC:ON

Question
- Are the actual values o.k.?
Yes
The actual values are okay. ** End of Test **
No
The actual values are not okay.
Possible cause and remedy
- Test of current consumption of O2 sensor heater of component G3/4 (Right O2 sensor, before TWC [KAT])
- Signal cable of component G3/4 (Right O2 sensor, before TWC [KAT])
- G3/4 (Right O2 sensor, before TWC [KAT])

** End of Test **


2 Test Current Consumption of Heating of Component G3/4 (Right O2 Sensor, Before TWC [KAT]).

Warning!
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 requirement
- The actual value is not o.k.

Test sequence
- Switch off ignition.
- Detach sockets 5 and 2 at component N3/10 (ME-SFI control module).
- (N3/10) 5.7 <--> 2.15 (N3/10)
- Switch on ignition.

Warning! Perform the measurement only for a short time so that component G3/4 (Right O2 sensor, before TWC [KAT]) does not overheat.

Specified value
- Amperage[0.5...2.0] A

Question
- Is the measured value okay?
Yes
The measured value is o.k.
Further possible causes of fault
- Signal cable of component G3/4 (Right O2 sensor, before TWC [KAT])
- G3/4 (Right O2 sensor, before TWC [KAT])
No
The measured value is not o.k.
Possible cause and remedy
- N10/1f43 (Fuse 43)
- N10/1kI (Circuit 87 relay, engine)
- Cable of O2 sensor heater of component G3/4 (Right O2 sensor, before TWC [KAT])
- G3/4 (Right O2 sensor, before TWC [KAT])

** End of Test **