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
• Ignition ON
• Insert new fuse FR18 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:
  S41 Switch - Clutch
• Ignition ON
• Insert new fuse FR18 and then check the fuse for proper operation.

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Connect fused jumper wire to:
  S41 Switch - Clutch
  Wiring harness connector (wiring harness side) terminal 4
  &
  Battery voltage
• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
  (Wiring Harness Connector (Z 14 XEP) (Z 14 XEL) (Z 12 XEP) XC2 (Z 16 XEP) (Z 16 XE1) XC10 (Z 18 XE) (Z 18 XER) XC4 (Z 20 LEL) (Z 20 LER) (Z 20 LEH) XC8 (Z 17 DTH) XC12 (Z 17 DTL) XC12 (Z 19 DTH) (Z 19 DT) (Z 19 DTL) XC53 (Z 13 DTH) XC20 (Z 16 XER) XC100 (Z 16 LET) (A 16 LET) XC98 (Z 17 DTJ) (Z 17 DTR) (A 17 DTJ) (A 17 DTR) XC96 (Z 22 YH) XC55 )
• Insert new fuse into the socket of the fused jumper wire and then check this fuse for proper operation.

Test okay?

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Disconnect wiring harness connector from:
  A165 Control Unit - Open & Start
• Insert new fuse into the socket of the fused jumper wire and then check this fuse for proper operation.

Test okay?

Check: Component

• Remove electrical component from socket:
  X125 Underhood Electronic Module
• Insert new fuse into the socket of the fused jumper wire and then check this 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
• Remove following component:
  Phone
• Ignition ON
• Insert new fuse FR18 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:
  S270 Switch Unit - Centre Console
• Ignition ON
• Insert new fuse FR18 and then check the fuse for proper operation.

Test okay?

Check: Short to Ground of Voltage Supply Circuit

• Ignition OFF
• Remove electrical component from socket:
  S122 Switch Unit - Light
• Ignition ON
• Insert new fuse FR18 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:
  P3 Instrument
  R1 Cigarette Lighter

Test okay?

Result

Cause Of Fault

• A temporary current overload in the system behind fuse FR18 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.

• Defective component:
  S41 Switch - Clutch

• 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.

Note:

If the defective component is a switching device (e.g. switch or relay) or a fuse, the cause for the fault may be located in the circuit behind that component.
In case of a switching device, the corresponding part of the circuit should be checked for short to ground/voltage before replacing the component.

• Defective component:
  A165 Control Unit - Open & Start

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.

• Short circuit to ground between:
  X125 Underhood Electronic Module
  Socket Terminal 27 (XE3)
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal (Z 14 XEP) (Z 14 XEL) (Z 12 XEP) 8 (XC2) (Z 16 XEP) (Z 16 XE1) 61 (XC10) (Z 18 XE) 10 (XC4) (Z 20 LEL) (Z 20 LER) (Z 20 LEH) 8 (XC8) (Z 17 DTH) 79 (XC12) (Z 17 DTL) 79 (XC12) (Z 19 DTH) (Z 19 DT) (Z 19 DTL) 79 (XC53) (Z 13 DTH) 22 (XC20) (Z 18 XER) 16 (XC4) (Z 16 XER) 16 (XC100) (Z 16 LET) (A 16 LET) 8 (XC98) (Z 17 DTJ) (Z 17 DTR) (A 17 DTJ) (A 17 DTR) 23 (XC96) (Z 22 YH) 56 (XC55)

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.

Note:

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

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

• Short circuit to ground between:
  X131 Rear Electronic Module
  Socket Terminal 8 (XR4)
  &
  Wiring harness connector terminals of all components (wiring harness side), which were disconnected from the wiring harness during this troubleshooting session

or

• Defective component:
  X131 Rear 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.