Checking the Sensor Preheating Power Supply

Checking The Sensor Preheating Power Supply







Unplug the connector:
- Heated oxygen sensor 1 (592Fa)







- Turn the ignition switch to the ON position.







- Contact Trionic.












- Connect test lamp 86 11 857 to pin 1 of the female connector and a good grounding point.
- Activate:

Fuel Pump Relay (Max 30s.)
On







- The test lamp should light.

Is the function correct?

NO - Rectifying the Lead - I

YES - Checking the Sensor Preheating Control Module Output