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C-015 Air Distribution Flap Stepper Motor Calibration Switch Circuit > < C-013 Stepper Motor Blender Circuit

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C-014 - Stepper Motor Air Distribution Circuit

Test

Work Order Description

Nominal Value
T001

Check: Short to Voltage of Signal Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    A1_A14 Control Unit - Climate Control
    (Wiring Harness Connector XC43 )
  • Ignition ON
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    Ground

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T002

Check: Short to Ground/Interruption of Signal Circuit
  • Ignition OFF
  • Connect fused jumper wire to:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    Battery voltage
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 3 (XC43)
    &
    Ground

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

Check: Short to Ground/Interruption of Signal Circuit
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 4 (XC43)
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T004

Check: Short to Ground/Interruption of Signal Circuit
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 19 (XC43)
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T005

Check: Short to Ground/Interruption of Signal Circuit
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 20 (XC43)
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T006

Check: Short to Ground of Signal Circuit
  • Check the following component for proper operation:
    Fuse of the fused jumper wire

Test okay?
Yes: No:
T007

Check: Interruption of Signal Circuit
  • Disconnect wiring harness connector from:
    M1_A14 Stepper Motor - Air Distribution Flap
  • Measure voltage between the following terminals:
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 2
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T008

Check: Short to Voltage of Signal Circuit
  • Disconnect wiring harness connector from:
    M1_A14 Stepper Motor - Air Distribution Flap
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    Ground

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T009

Check: Short to Voltage of Signal Circuit
  • Disconnect wiring harness connector from:
    M2_A14 Stepper Motor - Mixed Air Flap
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    Ground

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


Result

Cause Of Fault
E001 Result: Defective Component
  • Defective component:
    A1_A14 Control Unit - Climate Control
    or
    M1_A14 Stepper Motor - Air Distribution Flap

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:

Check the following mechanical fault sources:

  • Air distribution box
  • Air distribution hoses/air distributing ducts
E002 Result: Short to Ground/Interruption
  • Short circuit to ground/interruption of circuit between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 20 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 6

or

  • Defective component:
    M1_A14 Stepper Motor - Air Distribution Flap
E003 Result: Short to Ground/Interruption
  • Short circuit to ground/interruption of circuit between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 19 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 4

or

  • Defective component:
    M1_A14 Stepper Motor - Air Distribution Flap
E004 Result: Short to Ground/Interruption
  • Short circuit to ground/interruption of circuit between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 4 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 3

or

  • Defective component:
    M1_A14 Stepper Motor - Air Distribution Flap
E005 Result: Interruption
  • Short circuit to ground/interruption of circuit between:
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 1
    &
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 3 (XC43)

or

  • Defective component:
    M1_A14 Stepper Motor - Air Distribution Flap
E006 Result: Interruption
  • Circuit interruption between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 2
E007 Result: Short to Ground
  • Short circuit to ground between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 2
    &
    M2_A14 Stepper Motor - Mixed Air Flap
    Wiring harness connector (wiring harness side) terminal 2
E008 Result: Short to Voltage
  • If the nominal value is reached during one of the measurements, there is a short to voltage in the circuit behind the component that has been disconnected immediately before that measurement, or the corresponding component is defective.
E009 Result: Short to Voltage
  • Short circuit to voltage between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 7 (XC43)
    &
    M1_A14 Stepper Motor - Air Distribution Flap
    Wiring harness connector (wiring harness side) terminal 2
    &
    M2_A14 Stepper Motor - Mixed Air Flap
    Wiring harness connector (wiring harness side) terminal 2





C-015 Air Distribution Flap Stepper Motor Calibration Switch Circuit > < C-013 Stepper Motor Blender Circuit