lemon-mirror:
Home >> Audi >> 1990 >> 200 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays, Solenoids, Motors & Modules >> Cis-E III >> O2 Sensor Heating Element

O2 Sensor Heating Element

  1. To check O2 sensor heating element, disconnect O2 sensor heating element connector from harness connector. Connect voltmeter between harness connector terminals No. 1 and 2. See Fig 1 .
  2. Turn ignition on. Voltmeter should read 12 volts. If voltmeter does not read as specified, repair break in wiring. Connect ohmmeter between terminals No. 1 and 2 of O2 sensor heating element connector. See Fig 2 .
  3. Ohmmeter should read 3-15 ohms. If not, replace O2 sensor.
Fig 1: Identifying O2 Sensor & Differential Pressure Regulator Connector Terminals
G94344Courtesy of AUDI OF AMERICA, INC.
Fig 2: Identifying O2 Sensor Heating Element Connector Terminals
G94348Courtesy of AUDI OF AMERICA, INC.
NOTE: On CIS Motronic system, testing procedures for relays, solenoids, motors and modules are not available.
· About lemon-mirror