vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

ABOUT US
C-029 Fuel Pump Relay Circuit > < C-027 Fuel High Pressure Sensor Circuit

Astra H

C-028 - Fuel Rail Pressure Control Valve Circuit

Test

Work Order Description

Nominal Value
T001

Check: Short to Ground/Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    Y143 Solenoid Valve - Fuel Pressure Regulation
  • Ignition ON
  • Measure voltage between the following terminals:
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 1
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T002

Check: Short to Voltage of Signal Circuit
  • Ignition OFF
    Disconnect wiring harness connector from:
    A84 Control Unit - Engine
    (Wiring Harness Connector XC54 )
  • Ignition ON
  • Measure voltage between the following terminals:
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T003

Check: Short to Ground of Signal Circuit
  • Ignition OFF
  • Measure resistance between the following terminals:
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

greater than 500 kOhm
Resistance Measurement Current Value: kOhm
Yes: No:
T004

Check: Interruption of Signal Circuit
  • Measure resistance between the following terminals:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64,15 (XC54)
    &
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2

less than 5 Ohm
Resistance Measurement Current Value: Ohm
Yes: No:


Result

Cause Of Fault
E001 Result: Defective Component
  • Defective component:
    Y143 Solenoid Valve - Fuel Pressure Regulation
    or
    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.

Note:

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

The system must be checked for proper operation after every replacement.
E002 Result: Interruption
  • Circuit interruption between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64, 15 (XC54)
    &
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
E003 Result: Short to Ground
  • Short circuit to ground between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64, 15 (XC54)
    &
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
E004 Result: Short to Voltage
  • Short circuit to voltage between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 64, 15 (XC54)
    &
    Y143 Solenoid Valve - Fuel Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
E005 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Wiring harness connector (wiring harness side) terminal 28 (XE3)
    &
    Y143 Solenoid Valve - Fuel Pressure Regulation
    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.





C-029 Fuel Pump Relay Circuit > < C-027 Fuel High Pressure Sensor Circuit