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C-024 O2 Sensor Circuit (Before Catalyst) > < C-022 Evaporative Emission Control System Circuit

Astra H

C-023 - O2 Sensor Heater Circuit (Before Catalyst)

Test

Work Order Description

Nominal Value
T001

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    B166 Sensor - Oxygen, Mixture Control, Heated
  • Ignition ON
  • Measure voltage between the following terminals:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 1
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T002

Check: Component
  • Measure resistance between the following terminals:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (component side) terminal 1
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (component side) terminal 2

Note:

The resistance of the component is temperature-dependent.

Nominal value at 20 °C (68 °F) is between 10 Ohm and 15 Ohm

10 ... 15 Ohm
Resistance Measurement Current Value: Ohm
Yes: No:
T003

Check: Short to Voltage of Signal Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    A84 Control Unit - Engine
    (Wiring Harness Connector XC9 )
  • Ignition ON
  • Measure voltage between:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T004

Check: Short to Ground of Signal Circuit
  • Ignition OFF
  • Measure resistance between the following terminals:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

greater than 500 kOhm
Resistance Measurement Current Value: kOhm
Yes: No:
T005

Check: Interruption of Signal Circuit
  • Measure resistance between the following terminals:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
    &
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 52 (XC9)

less than 5 Ohm
Resistance Measurement Current Value: Ohm
Yes: No:
T006

Check: Component

To illuminate the test light, the oxygen sensor heating has to be active (compare to corresponding data list parameter).

  • Remove fused jumper wire
  • Connect wiring harness connector to:
    A84 Control Unit - Engine
    (Wiring Harness Connector XC9 )
  • Connect test light to:
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 1
  • Engine running

Test light ON?
Diagnostic Tester Data List Parameter Current Value:
Yes: No:


Result

Cause Of Fault
E001 Result: Defective Component
  • Defective component:
    B166 Sensor - Oxygen, Mixture Control, Heated

Important:

After replacing the component B166 the programming function to reset the learned values has to be performed by using the diagnostic tester.
E002 Result: Defective Component
  • Defective component:
    A84 Control Unit - Engine

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.
E003 Result: Interruption
  • Circuit interruption between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 52 (XC9)
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
E004 Result: Short to Ground
  • Short circuit to ground between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 52 (XC9)
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
E005 Result: Short to Voltage
  • Short circuit to voltage between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 52 (XC9)
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 2
E006 Result: Defective Component
  • Defective component:
    B166 Sensor - Oxygen, Mixture Control, Heated

Important:

After replacing the component B166 the programming function to reset the learned values has to be performed by using the diagnostic tester.
E007 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Wiring harness connector (wiring harness side) terminal 29 (XE3)
    &
    B166 Sensor - Oxygen, Mixture Control, Heated
    Wiring harness connector (wiring harness side) terminal 1

or

  • Defective component:
    X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.





C-024 O2 Sensor Circuit (Before Catalyst) > < C-022 Evaporative Emission Control System Circuit