vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

C-019 O2 Sensor Heater Circuit (Before Catalyst) > < C-017 Linear Exhaust Gas Recirculation Valve Circuit

C-018 - Charcoal Canister Purge Valve Circuit

Test

Work Order Description

Nominal Value

T001

Check: Short to Ground/Interruption of Voltage Supply Circuit

  • Ignition OFF
  • Disconnect wiring harness connector from:
    Y123 Solenoid Valve - Tank Ventilation
  • Ignition ON
  • Measure voltage between the following terminals:
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 1
    &
    Ground

greater than 11 V

Voltage Measurement Current Value: V
Yes: No:
T002

Check: Short to Voltage of Signal Circuit

  • Ignition OFF
    Disconnect wiring harness connector from:
    A84 Control Unit - Engine
    (Wiring Harness Connector XC55 )
  • Ignition ON
  • Measure voltage between the following terminals:
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

less than 0.3 V

Voltage Measurement Current Value: V
Yes: No:
T003

Check: Short to Ground/Interruption of Signal Circuit

  • Measure resistance between the following terminals:
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

greater than 500 kOhm

Resistance Measurement Current Value: kOhm
Yes: No:
T004

Check: Interruption of Signal Circuit

  • Measure resistance between the following terminals:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64 (XC55)
    &
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2

less than 5 Ohm

Resistance Measurement Current Value: Ohm
Yes: No:


Result

Cause Of Fault

E001 Result: Defective Component
  • Defective component:
    Y123 Solenoid Valve - Tank Ventilation
    or
    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.

Note:

The replacement of the components must be done in the listed order.

The system must be checked for proper operation after every replacement.

E002 Result: Interruption
  • Circuit interruption between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64 (XC55)
    &
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2
E003 Result: Short to Ground
  • Short circuit to ground between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64 (XC55)
    &
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2
E004 Result: Short to Voltage
  • Short circuit to voltage between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64 (XC55)
    &
    Y123 Solenoid Valve - Tank Ventilation
    Wiring harness connector (wiring harness side) terminal 2
E005 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Wiring harness connector (wiring harness side) terminal 29 (XE3)
    &
    Y123 Solenoid Valve - Tank Ventilation
    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-019 O2 Sensor Heater Circuit (Before Catalyst) > < C-017 Linear Exhaust Gas Recirculation Valve Circuit