Vauxhall Workshop Service and Repair Manuals

Test

Work Order Description

Nominal Value

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• All consumers turned off
• Remove electrical component from socket:
  FB4 Fuse
• Disconnect wiring harness connector from:
  A12 Add-On Heater
• Connect fused jumper wire to:
  FB4 Fuse
  Output contact
  &
  Battery voltage
• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Result

Cause Of Fault

• Defective component:
  A12 Add-On Heater
  or
• A temporary current overload in the system behind fuse FB4 has occurred

Note:

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

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.

• Short circuit to ground between:
  FB4 Fuse
  Output contact
  &
  A12 Add-On Heater
  Wiring harness connector (wiring harness side) terminal 1P