Heating of Component G3/6 (Right O2 Sensor, After TWC [Kat]) : Heating Capacity Is Too Low

Heating of Component G3/6 (Right O2 Sensor, After TWC [KAT]) :: Heating Capacity is Too Low. (P0141)

Check Component G3/6 (Right O2 Sensor, After TWC [KAT]). (Only (USA), EURO 3, EURO 4, D4)

Test Check Component G3/6 (Right O2 Sensor, After TWC [KAT]) Using Actual Value.
Test Test Current Consumption of Heating of Component G3/6 (Right O2 Sensor, After TWC [KAT]).


1 Check Component G3/6 (Right O2 Sensor, After TWC [KAT]) Using Actual Value.

Test requirement
- 80 °C 2500 1/min At coolant temperature , start engine and maintain engine speed of ca.for about 2minutes.

Status of the relevant actual values:
- G3/6 (Right O2 sensor, after TWC [KAT]), Signal: Note! Communication with ECU required
- Exhaust temperature with TWC model: Note! Communication with ECU required

Specified value
- Range must drop below or rise above range 450 to 500 1 times within a minute.(Engine at idle speed)
- Exhaust temperature with TWC model: >350 °C
- O2 sensor heater, after 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 G3/6 (Right O2 sensor, after TWC [KAT])
- Signal cable of component G3/6 (Right O2 sensor, after TWC [KAT])
- G3/6 (Right O2 sensor, after TWC [KAT])

** End of Test **


2 Test Current Consumption of Heating of Component G3/6 (Right O2 Sensor, After 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.
- Unplug the socket 5 at component N3/10 (ME-SFI control module).
- (N3/10) 5.7 <--> 5.4 (N3/10)
- Switch on ignition.

Warning! Perform the measurement only for a short time so that component G3/6 (Right O2 sensor, after 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 G3/6 (Right O2 sensor, after TWC [KAT])
- G3/6 (Right O2 sensor, after 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 G3/6 (Right O2 sensor, after TWC [KAT])
- G3/6 (Right O2 sensor, after TWC [KAT])

** End of Test **