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C-033 Turbocharger Bypass Solenoid Valve Circuit > < C-031 Boost Pressure Sensor Circuit

Astra H

C-032 - Waste Gate Valve Circuit

Test

Work Order Description

Nominal Value
T001

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Remove electrical component from socket:
    K3_X125 Relay - Terminal 15
  • Disconnect wiring harness connector from:
    Y142 Solenoid Valve - Boost Pressure Regulation
    Connect fused jumper wire to:
    K3_X125 Relay - Terminal 15
    Socket Terminal 87
    &
    Battery voltage
  • Measure voltage between the following terminals:
    Y142 Solenoid Valve - Boost Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

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

Check: Short to Voltage of Voltage Supply Circuit
  • Remove electrical component from socket:
    K12_X125 Relay - Radiator Fan
  • Disconnect wiring harness connector from:
    A84 Control Unit - Engine
    (Wiring Harness Connector (XC7) )
  • Ignition ON
  • Measure voltage between the following terminals:
    Y142 Solenoid Valve - Boost Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 1
    &
    Ground

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

Check: Component
  • Ignition OFF
  • Connect wiring harness connector to:
    Y142 Solenoid Valve - Boost Pressure Regulation
  • Ground the following terminal briefly several times:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 34 (XC7)

Clicking noise from following component:

Y142 Solenoid Valve - Boost Pressure Regulation
Yes: No:


Result

Cause Of Fault
E001 Result: Defective Component
  • 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.
E002 Result: Short to Ground/Interruption
  • Short circuit to ground/interruption of circuit between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 34 (XC7)
    &
    Y142 Solenoid Valve - Boost Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 1

or

  • Defective component:
    Y142 Solenoid Valve - Boost Pressure Regulation
E003 Result: Short to Voltage
  • Short circuit to voltage between:
    A84 Control Unit - Engine
    Wiring harness connector (wiring harness side) terminal 34 (XC7)
    &
    Y142 Solenoid Valve - Boost Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 1
E004 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Wiring harness connector (wiring harness side) terminal 22 (XE3)
    &
    Y142 Solenoid Valve - Boost Pressure Regulation
    Wiring harness connector (wiring harness side) terminal 2

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-033 Turbocharger Bypass Solenoid Valve Circuit > < C-031 Boost Pressure Sensor Circuit