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 fuse FE4 and then check the fuse for proper operation.

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Ignition ON
• Switch fan to maximum speed.
• Check the following component for proper operation:
  FE4 Fuse

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Remove electrical component from socket:
  K15_X125 Relay - Blower, Passenger Compartment
• Connect fused jumper wire to:
  K15_X125 Relay - Blower, Passenger Compartment
  Socket Terminal 87
  &
  Battery voltage
• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Remove fused jumper wire
• Remove electrical component from socket:
  X125 Underhood Electronic Module
• Connect fused jumper wire to:
  X125 Underhood Electronic Module
  Socket Terminal 32 (XE2)
  &
  Battery voltage

Test okay?

Result

Cause Of Fault

• A temporary current overload in the system behind fuse FE4 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 32 (XE2)
  &
  A1_A60 Controls - Heating/Air Conditioning
  Wiring harness connector (wiring harness side) terminal 5 (XC41)

or

• Defective component:
  A1_A60 Controls - Heating/Air Conditioning

Note:

If the defective component is a control unit, the cause for the fault may be located in a circuit behind that component.

• Defective component:
  K15_X125 Relay - Blower, Passenger Compartment
  or
  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.

Note:

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

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