O2 Sensor Heater of Component G3/6 (Right O2 Sensor, After TWC [KAT])

O2 Sensor Heater of Component G3/6 (Right O2 Sensor, After TWC [KAT])

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

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


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

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

Status of the relevant actual values:
- Temperature of coolant: Note! Communication with ECU required
- Engine speed: Note! Communication with ECU required
- O2 sensor voltage, after TWC right: Note! Communication with ECU required
- O2 sensor heater, after TWC: Note! Communication with ECU required
- Exhaust temperature with TWC model: Note! Communication with ECU required

Specified value
- O2 sensor voltage, after TWC right: Range must drop below or rise above range 450 to 500 mV 1 times within a minute.(Engine at idle speed)
- Exhaust temperature with TWC model: >350 °C

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 of Current Consumption of Heater 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 A at component N3/10 (ME-SFI control module).
- Unplug the socket B at component N3/10 (ME-SFI control module).
- (N3/10) A.3 <--> B.1 (N3/10)
- Switch on ignition. (Note! Component M4/3 (engine/AC electric suction fan) runs)

Specified value
- Amperage[1.0...4.5] 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
- K40/7f30 (Fuse 30)
- 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 **