Vauxhall Workshop Service and Repair Manuals

Test

Work Order Description

Nominal Value

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Component

• Connect loaded battery parallel to the battery in the vehicle
• Selector lever in position P
• Start engine

Does the engine start?

Check: Wiring Harness

• Ignition OFF
• All consumers turned off
• Charge or replace battery
• Disconnect wiring harness connector from:
  G1 Battery
  Terminal 31
• Wait time: minimum 60 s
• Measure current between the following terminals:
  G1 Battery
  Wiring harness connector (component side) terminal 31
  &
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 31

Note:

All car systems must be switched OFF during these tests. Doors and trunk / tailgate must be closed, engine compartment lighting must be disconnected.

less than 60 mA

Check: Battery Voltage

• Connect wiring harness connector to:
  G1 Battery
  Terminal 31
• Engine running
• Turn all electrical consumers ON
• Increase engine speed to 3000 rpm
• Measure voltage between the following terminals:
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 30
  &
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 31

greater than 12.5 V

Check: Transition Resistance of Ground Circuit

• Check the ground connection of the housing of the following component:
  G8 Alternator

Is the ground connection okay?

Check: Short to Ground/Interruption of Signal Circuit

• Disconnect wiring harness connector from:
  G8 Alternator
  (Wiring Harness Connector L )
• Ignition ON
• Measure voltage between the following terminals:
  G8 Alternator
  Wiring harness connector (wiring harness side) terminal L
  &
  Ground

greater than 11 V

Check: Short to Voltage/Ground/Interruption of Signal Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  A84 Control Unit - Engine
  (Wiring Harness Connector XC55 )
• Ignition ON
• No gear is engaged
• Parking brake applied
• Contact fused jumper wire once to:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 54 (XC55)
  &
  Ground

Does the engine start?

Check: Short to Voltage of Signal Circuit

• Remove fused jumper wire
• Ignition OFF
• Remove electrical component from socket:
  K1_X125 Relay - Starter
• Ignition ON
• Measure voltage between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 85
  &
  Ground

less than 0.3 V

Check: Short to Ground of Signal Circuit

• Ignition OFF
• Measure resistance between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 85
  &
  Ground

greater than 500 kOhm

Check: Interruption of Signal Circuit

• Measure resistance between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 85
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 54 (XC55)

less than 5 Ohm

Check: Interruption of Voltage Supply Circuit

• Measure voltage between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 30
  &
  Ground

greater than 11 V

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Voltage of Signal Circuit

• Ignition OFF
• Disconnect wiring harness connector from:
  S187 Switch - Automatic Transmission
• Ignition ON
• Measure voltage between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 87
  &
  Ground

less than 0.3 V

Check: Short to Voltage of Signal Circuit

• Disconnect wiring harness connector from:
  M15 Starter
• Measure voltage between the following terminals:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 10
  &
  Ground

less than 0.3 V

Check: Short to Ground/Interruption of Signal Circuit

• Ignition OFF
• Connect fused jumper wire to:
  K1_X125 Relay - Starter
  Socket Terminal 87
  &
  Battery voltage
• Measure voltage between the following terminals:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 6
  &
  Ground

greater than 11 V

Check: Short to Ground/Interruption of Signal Circuit

• Remove fused jumper wire
• Connect fused jumper wire to:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 10
  &
  Battery voltage
• Measure voltage between the following terminals:
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50
  &
  Ground

greater than 11 V

Check: Component

• Remove fused jumper wire
• Connect wiring harness connector to:
  M15 Starter
• Contact fused jumper wire once to:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 10
  &
  Battery voltage

Does the engine start?

Check: Short to Voltage/Ground/Interruption of Signal Circuit

• Remove fused jumper wire
• Ignition ON
• Measure voltage between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 86
  &
  Ground

greater than 11 V

Check: Short to Voltage/Ground/Interruption of Signal Circuit

• Ignition OFF
• Remove electrical component from socket:
  K3_X125 Relay - Terminal 15
• Ignition ON
• Measure voltage between the following terminals:
  K3_X125 Relay - Terminal 15
  Socket Terminal 85
  &
  K3_X125 Relay - Terminal 15
  Socket Terminal 86

greater than 11 V

Check: Interruption of Signal Circuit

• Measure voltage between the following terminals:
  K3_X125 Relay - Terminal 15
  Socket Terminal 30
  &
  K3_X125 Relay - Terminal 15
  Socket Terminal 85

greater than 11 V

Check: Interruption of Signal Circuit

• Ignition OFF
• Measure resistance between the following terminals:
  K3_X125 Relay - Terminal 15
  Socket Terminal 87
  &
  K1_X125 Relay - Starter
  Socket Terminal 86

less than 5 Ohm

Check: Short to Voltage/Interruption of Signal Circuit

• 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

• Ignition OFF
• Disconnect wiring harness connector from:
  X125 Underhood Electronic Module
• Ignition ON
• Measure voltage between the following terminals:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 14 (XC2)
  &
  Ground

greater than 11 V

Check: Short to Ground/Interruption of Signal Circuit

• Ignition OFF
• Connect fused jumper wire to:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 14 (XE2)
  &
  Battery voltage
• Check the following component for proper operation:
  Fuse of the fused jumper wire

Test okay?

Check: Component

• Disconnect wiring harness connector from:
  A37 Control Unit - Anti-Lock Brake System
• 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

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:
  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: Vehicle Configuration

Is the following information correct for the actual vehicle?

Check: Short to Ground of Signal Circuit

• Disconnect wiring harness connector from:
  R1 Cigarette Lighter
• Insert new fuse into the socket of the fused jumper wire and then check this fuse for proper operation.

Test okay?

Check: Component

Important:

Before working on the pyrotechnical system:
Ignition off
Disconnect and mask battery negative terminal
Wait 1 min until the capacitor in the control unit has discharged.

• Disconnect wiring harness connector from:
  A63 Control Unit - Airbag
• Connect wiring harness connector to:
  Battery Voltage (Negative Terminal)
• Insert new fuse into the socket of the fused jumper wire and then check this fuse for proper operation.

Test okay?

Check: Transition Resistance of Ground Circuit

• Check the ground connection of the housing of the following component:
  M15 Starter

Is the ground connection okay?

Check: Short to Voltage of Signal Circuit

• Disconnect wiring harness connector from:
  M15 Starter
• Ignition ON
• Measure voltage between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 87
  &
  Ground

less than 0.3 V

Check: Interruption of Signal Circuit

• Ignition OFF
• Measure resistance between the following terminals:
  K1_X125 Relay - Starter
  Socket Terminal 87
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

less than 5 Ohm

Check: Short to Voltage/Ground/Interruption of Voltage Supply

• Connect wiring harness connector to:
  M15 Starter
• Contact fused jumper wire once to:
  K1_X125 Relay - Starter
  Socket Terminal 30
  &
  K1_X125 Relay - Starter
  Socket Terminal 87

Does the engine start?

Check: Component

• Connect loaded battery parallel to the battery in the vehicle
• Start engine

Does the engine start?

Result

Cause Of Fault

• Defective component:
  G1 Battery

• High transition resistance between:
  G8 Alternator
  Wiring harness connector (wiring harness side) terminal B+
  &
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 30

or

• Defective component:
  G8 Alternator

• Short circuit to ground/interruption of circuit between:
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 8 (XC55)
  &
  G8 Alternator
  Wiring harness connector (wiring harness side) terminal L

or

• Defective component:
  A84 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.

• High transition resistance between:
  G8 Alternator
  &
  Engine block

• Stall current of one or more consumers is too high

Note:

During fault searching in the wiring harness, the sections of the wiring harness can be separated at the assigned connectors. When the stall current changes to the permissible value after separating a section, the fault is located in the concerning section of the wiring harness.

• Defective component:
  A84 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.

• Defective component:
  K1_X125 Relay - Starter

• Defective component:
  K3_X125 Relay - Terminal 15

• 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
  Wiring harness connector (wiring harness side) terminal 47 (XE1)
  &
  Ground

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:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 14 (XE2)

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.

• 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.

• Defective component:
  A165 Control Unit - Open & Start

• Defective component:
  R1 Cigarette Lighter

• Defective component:
  A63 Control Unit - Airbag

• Short circuit to ground between:
  A105 Column Integrated Module
  Wiring harness connector (wiring harness side) terminal 2 (XC46)
  &
  Concerned terminals of all wiring harness connectors, which are connected with the corresponding lead.

• High transition resistance between:
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 30
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

or

• Defective component:
  M15 Starter

• High transition resistance between:
  M15 Starter
  &
  Engine block

• Short circuit to ground/interruption of circuit between:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 10
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

• Short circuit to ground/interruption of circuit between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 4 (XE3)
  &
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 6

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.

• Short circuit to voltage between:
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 10
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

• Short circuit to voltage between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 4 (XE3)
  &
  S187 Switch - Automatic Transmission
  Wiring harness connector (wiring harness side) terminal 6

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:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 4 (XE3)
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

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.

• Short circuit to voltage between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 4 (XE3)
  &
  M15 Starter
  Wiring harness connector (wiring harness side) terminal 50

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:
  G1 Battery
  Wiring harness connector (wiring harness side) terminal 30
  &
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) wiring colour RD

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:

Wiring colours: BK=Black, BN=Brown, BU=Blue, GD=Gold, GN=Green, GY=Grey, OG=Orange, PK=Pink, RD=Red, SR=Silver, TQ=Turquoise, VT=Violet, WH=White, YE=Yellow,
L=Light, D=Dark

• Circuit interruption between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 1 (XE3)
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 54 (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.

• Short circuit to ground between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 1 (XE3)
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 54 (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.

• Short circuit to voltage between:
  X125 Underhood Electronic Module
  Wiring harness connector (wiring harness side) terminal 1 (XE3)
  &
  A84 Control Unit - Engine
  Wiring harness connector (wiring harness side) terminal 54 (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.