Vauxhall Workshop Service and Repair Manuals

Test

Work Order Description

Nominal Value

Check: Interruption of Voltage Supply Circuit

• Ignition OFF
• All consumers turned off
• Disconnect wiring harness connector from:
  A37 Control Unit - Anti-Lock Brake System
  &
  Diagnostic tester
• Measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 1
  &
  Ground

greater than 11 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Interruption of Voltage Supply Circuit

• Measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 24
  &
  Ground

greater than 11 V

Check: Short to Voltage of Voltage Supply Circuit

• Measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20
  &
  Ground

less than 0.3 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Interruption of Voltage Supply Circuit

• Ignition ON
• Measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20
  &
  Ground

Note:

If the vehicle is equipped with Open & Start, perform the measurement within 15s after Ignition ON.

greater than 11 V

Check: Circuit Interruption of Ground Circuit

• Connect test lamp ( 21 W ) and multimeter in parallel and measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 1
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 26, 13

greater than 11 V

Check: Interruption of Signal Circuit

• Measure resistance between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 21
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 23

50 ... 70 Ohm

Check: Interruption of Signal Circuit

• Remove electrical component from socket:
  X125 Underhood Electronic Module
• Measure resistance between the following terminals:
  X125 Underhood Electronic Module
  Socket Terminal 44 (XE2)
  &
  X125 Underhood Electronic Module
  Socket Terminal 45 (XE2)

110 ... 120 Ohm

Check: Interruption of Signal Circuit

• Measure resistance between the following terminals:
  X125 Underhood Electronic Module
  Socket Terminal 15 (XE3)
  &
  X125 Underhood Electronic Module
  Socket Terminal 11 (XE3)

110 ... 130 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Interruption of Signal Circuit

• Disconnect wiring harness connector from:
  A112 Control Unit - Transmission
• Measure resistance between the following terminals:
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 63(XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 32 (Front Wheel Drive, Automatic Transmission, AF 40-6) 6 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 32
  &
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 61(XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 11 (Front Wheel Drive, Automatic Transmission, AF 40-6) 7 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 11

110 ... 130 Ohm

110 ... 130 Ohm

110 ... 130 Ohm

110 ... 130 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Interruption of Signal Circuit

• Disconnect wiring harness connector from:
  A6 Control Unit - Semi Active Damping System
• Measure resistance between the following terminals:
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 28
  &
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 31

110 ... 120 Ohm

Check: Interruption of Voltage Supply Circuit

• Disconnect wiring harness connector from:
  A165 Control Unit - Open & Start
• Measure voltage between the following terminals:
  A165 Control Unit - Open & Start
  Wiring harness connector (wiring harness side) terminal 19
  &
  Ground

greater than 11 V

Check: Interruption of Signal Circuit

Important:

Before commencing work on the restraint system:
Ignition OFF
Disconnect the ground cable from battery and mask the negative terminal.
Wait 1 minute until the capacitor in the airbag control unit has discharged.
When commencing work on pyrotechnic seat belt tensioners, it is sufficient to switch the ignition off.

• Disconnect wiring harness connector from:
  A105 Column Integrated Module
• Measure resistance between the following terminals:
  A165 Control Unit - Open & Start
  Wiring harness connector (wiring harness side) terminal 21
  &
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 18 (XC46)

less than 5 Ohm

Check: Short to Ground of Signal Circuit

• Measure resistance between the following terminals:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 17 (XC46)
  &
  Ground

greater than 500 kOhm

Check: Interruption of Voltage Supply Circuit

• Ignition ON
• Measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20
  &
  Ground

greater than 11 V

Check: Circuit Interruption of Ground Circuit

• Connect test lamp ( 21 W ) and multimeter in parallel and measure voltage between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 1
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 26,13

greater than 11 V

Check: Interruption of Signal Circuit

• Ignition OFF
• Measure resistance between the following terminals:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 21
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 23

50 ... 70 Ohm

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Interruption of Voltage Supply Circuit

Important:

Before commencing work on the restraint system:
Ignition OFF
Disconnect the ground cable from battery and mask the negative terminal.
Wait 1 minute until the capacitor in the airbag control unit has discharged.
When commencing work on pyrotechnic seat belt tensioners, it is sufficient to switch the ignition off.

• Ignition OFF
• Disconnect wiring harness connector from:
  A105 Column Integrated Module
• Connect fused jumper wire to:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  Battery voltage
• Measure voltage between the following terminals:
  K3_X125 Relay - Terminal 15
  Socket Terminal 86
  &
  Ground

greater than 11 V

Check: Short to Ground of Signal Circuit

• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Check: Short to Ground of Signal Circuit

Important:

Before commencing work on the restraint system:
Ignition OFF
Disconnect the ground cable from battery and mask the negative terminal.
Wait 1 minute until the capacitor in the airbag control unit has discharged.
When commencing work on pyrotechnic seat belt tensioners, it is sufficient to switch the ignition off.

• Do not disconnect wiring harness connector from:
  A63 Control Unit - Airbag
• 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 Signal Circuit

• Disconnect wiring harness connector from:
  K1_X131 Relay - Terminal 15
• Insert new fuse into the socket of the fused jumper wire and then check this fuse for proper operation.
• Disconnect each of the following components/control units from the wiring harness consecutively and check the fuse of the fused jumper wire for proper operation each time:
  X131 Rear Electronic Module
  X125 Underhood Electronic Module

Test okay?

Check: Short to Ground of Signal Circuit

• Disconnect wiring harness connector from:
  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: Interruption of Voltage Supply Circuit

• Remove electrical component from socket:
  FE16 Fuse
• Measure voltage between the following terminals:
  FE16 Fuse
  Input contact
  &
  Ground

greater than 11 V

Check: Interruption of Voltage Supply Circuit

• Remove electrical component from socket:
  FE1 Fuse
• Measure voltage between the following terminals:
  FE1 Fuse
  Input contact
  &
  Ground

greater than 11 V

Result

Cause Of Fault

• Defective component:
  A37 Control Unit - Anti-Lock Brake System

• Circuit interruption between:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 21
  &
  X125 Underhood Electronic Module
  Socket Terminal 43 (XE2)
  or
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 23
  &
  X125 Underhood Electronic Module
  Socket Terminal 50 (XE2)

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.

• Circuit interruption between:
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 56(XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 31 (Front Wheel Drive, Automatic Transmission, AF 40-6) 14 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 31
  &
  X125 Underhood Electronic Module
  Socket Terminal 15 (XE3)
  or
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 54 (XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 10 (Front Wheel Drive, Automatic Transmission, AF 40-6) 8 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 10
  &
  X125 Underhood Electronic Module
  Socket Terminal 11 (XE3)

or

• Defective component:
  A112 Control Unit - Transmission

• Circuit interruption between:
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 63(XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 32 (Front Wheel Drive, Automatic Transmission, AF 40-6) 6 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 32
  &
  Control unit, engine
  or
  A112 Control Unit - Transmission
  Wiring harness connector (wiring harness side) terminal (Front Wheel Drive, Manual-Transmission-Automatic (Easytronic) F13-5MTA/F17-5MTA) 61(XC13) (Front Wheel Drive, Automatic Transmission, AF 22-4) 11 (Front Wheel Drive, Automatic Transmission, AF 40-6) 7 (XC60) (Front Wheel Drive, Automatic Transmission, AF 17-4) 11
  &
  Control unit, engine

or

• Defective component:
  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.

• Circuit interruption between:
  X125 Underhood Electronic Module
  Socket Terminal 15 (XE3)
  &
  Control unit, engine
  or
  X125 Underhood Electronic Module
  Socket Terminal 11 (XE3)
  &
  Control unit, engine

or

• Defective component:
  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.

• Circuit interruption between:
  X125 Underhood Electronic Module
  Socket Terminal 44 (XE2)
  &
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 29
  or
  X125 Underhood Electronic Module
  Socket Terminal 45 (XE2)
  &
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 32

or

• Defective component:
  A6 Control Unit - Semi Active Damping System

• Circuit interruption between:
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 28
  &
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 6 (XC46)
  or
  A6 Control Unit - Semi Active Damping System
  Wiring harness connector (wiring harness side) terminal 31
  &
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 5 (XC46)

or

• Defective component:
  A105 Column Integrated 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.

• Circuit interruption between:
  X125 Underhood Electronic Module
  Socket Terminal 44 (XE2)
  &
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 6 (XC46)
  or
  X125 Underhood Electronic Module
  Socket Terminal 45 (XE2)
  &
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 5 (XC46)

or

• Defective component:
  A105 Column Integrated 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.

• Circuit interruption between:
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 26, 13
  &
  Ground

• Circuit interruption between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 17 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

or

• Defective component:
  A105 Column Integrated Module
  or
  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.

Note:

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

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

• Short circuit to ground between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 17 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

• Circuit interruption between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 18 (XC46)
  &
  A165 Control Unit - Open & Start
  Wiring harness connector (wiring harness side) terminal 21

• Circuit interruption between:
  A165 Control Unit - Open & Start
  Wiring harness connector (wiring harness side) terminal 19
  &
  X131 Rear Electronic Module
  Wiring harness connector (wiring harness side) terminal 1 (XR4)

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.

• Circuit interruption between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

• Defective component:
  A1_A105.2 Switch - Starter
  or
  A105 Column Integrated 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.

• Circuit interruption between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

• 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.

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 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.

• Short circuit to ground between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  Wiring harness connector terminals of all components (wiring harness side), which were disconnected from the wiring harness during this troubleshooting session

• Short circuit to voltage between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 17 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

or

• Defective component:
  A105 Column Integrated 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.

• Short circuit to voltage between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 20

or

• Defective component:
  A105 Column Integrated 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.

• Circuit interruption between:
  X125 Underhood Electronic Module
  Socket Terminal 33 (XE2)
  &
  A37 Control Unit - Anti-Lock Brake System
  Wiring harness connector (wiring harness side) terminal 24

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.

• 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.

• Circuit interruption between:
  X125 Underhood Electronic Module
  Socket Terminal 29 (XE2)
  &
  A37 Control Unit - Anti-Lock Brake System
  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.