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C-030 Fuse F50 Circuit > < C-028 No Communication with SAC

Astra H

C-029 - No Communication with Electrohydraulic Hardtop

Test

Work Order Description

Nominal Value
T001

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • All consumers turned off
  • Disconnect wiring harness connector from:
    A178 Control Unit - Hardtop
    &
    Diagnostic tester
  • Ignition ON
  • Measure voltage between the following terminals:
    A178 Control Unit - Hardtop
    Wiring harness connector (wiring harness side) terminal 12 (XC85)
    &
    Ground

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

Check: Interruption of Voltage Supply Circuit
  • Measure voltage between the following terminals:
    A178 Control Unit - Hardtop
    Wiring harness connector (wiring harness side) terminal 25 (XC85)
    &
    Battery voltage

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T003

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Remove electrical component from socket:
    FE16 Fuse
  • Ignition ON
  • Measure voltage between the following terminals:
    FE16 Fuse
    Input contact
    &
    Ground

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


Result

Cause Of Fault
E001 Result: Interruption
  • Circuit interruption between:
    A178 Control Unit - Hardtop
    Wiring harness connector (wiring harness side) terminal 24 (XC85)
    &
    X131 Rear Electronic Module
    Wiring harness connector (wiring harness side) terminal 5 (XR1)

or

  • Defective component:
    A178 Control Unit - Hardtop
    or
    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.

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:
    A178 Control Unit - Hardtop
    Wiring harness connector (wiring harness side) terminal 25 (XC85)
    &
    Ground
E003 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Socket Terminal 35 (XE2)
    &
    A178 Control Unit - Hardtop
    Wiring harness connector (wiring harness side) terminal 12 (XC85)
E004 Result: Interruption
  • Circuit interruption between:
    FE16 Fuse
    Input contact
    &
    G1 Battery
    Terminal 30

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-030 Fuse F50 Circuit > < C-028 No Communication with SAC