Vauxhall Workshop Service and Repair Manuals

Test

Work Order Description

Nominal Value

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Reconnect all disconnected components
• All consumers turned off
• Insert new component:
  FE26 Fuse

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Insert new fuse FE26 and then check the fuse for proper operation.
• Ignition ON
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B57 Sensor - Oxygen, Catalytic Converter Check
  B166 Sensor - Oxygen, Mixture Control, Heated
  Y56 Solenoid Valve - Exhaust Gas Recirculation
  Y21C Solenoid Valve - Twinport

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Insert new fuse FE26 and then check the fuse for proper operation.
• Ignition ON
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B69 Air Mass Meter
  B166 Sensor - Oxygen, Mixture Control, Heated
  B57 Sensor - Oxygen, Catalytic Converter Check

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B57 Sensor - Oxygen, Catalytic Converter Check
  B166 Sensor - Oxygen, Mixture Control, Heated
  Y158 Thermostat, Map-Controlled
  Y56 Solenoid Valve - Exhaust Gas Recirculation
  Y1_Y21B Solenoid Valve - Twinport

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y145 Solenoid Valve - Swirl
• Insert new fuse FE26 and then check the fuse for proper operation.
• Ignition ON
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  Y56 Solenoid Valve - Exhaust Gas Recirculation

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B69 Air Mass Meter
  B57 Sensor - Oxygen, Catalytic Converter Check
  B166 Sensor - Oxygen, Mixture Control, Heated
  Y21 Solenoid Valve - Intake Manifold
  Y164 Solenoid valve - Camshaft, intake
  Y162 Solenoid valve - Camshaft, exhaust
  Y158 Thermostat, Map-Controlled

Note:

During model year 2008 the following changes occur:

The component B69 is no longer installed

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B166 Sensor - Oxygen, Mixture Control, Heated
  B57 Sensor - Oxygen, Catalytic Converter Check

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  B56 Sensor - Oxygen, Exhaust, Heated
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
  (Wiring Harness Connector XC53 )
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  Y142 Solenoid Valve - Boost Pressure Regulation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  Y56 Solenoid Valve - Exhaust Gas Recirculation
  Y38 Solenoid Valve - Intake Air Throttle
  A84 Control Unit - Engine
  (Wiring Harness Connector XC19 )

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B57 Sensor - Oxygen, Catalytic Converter Check
  B166 Sensor - Oxygen, Mixture Control, Heated
  Y164 Solenoid valve - Camshaft, intake
  Y162 Solenoid valve - Camshaft, exhaust
  Y158 Thermostat, Map-Controlled
  Y21 Solenoid Valve - Intake Manifold

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Ignition OFF
• Disconnect wiring harness connector from:
  Y123 Solenoid Valve - Tank Ventilation
• Ignition ON
• Insert new fuse FE26 and then check the fuse for proper operation.
• Disconnect each of the following components/control units consecutively from the wiring harness and repeat the check each time:
  B69 Air Mass Meter
  B28 Sensor - Camshaft
  B166 Sensor - Oxygen, Mixture Control, Heated
  B57 Sensor - Oxygen, Catalytic Converter Check

Test okay?

Result

Cause Of Fault

• A temporary current overload in the system behind fuse FE26 has occurred

Note:

In case of a temporary current overload, the cause for the blow of the fuse may be located in a circuit behind the control unit/component.

These circuits should be checked additionally for short to ground.

• If the nominal value is reached during one of the measurements, the component/control unit that has been disconnected immediately before that measurement is defective.

• Short circuit to ground between:
  X125 Underhood Electronic Module
  Socket Terminal 29 (XE3)
  &
  Wiring harness connector terminals of all components (wiring harness side), which were disconnected from the wiring harness during this troubleshooting session

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.

• The selected Checking Procedure is not valid for this vehicle configuration.