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C-005 Wheel Sensor Circuits > < C-003 Rear Left Wheel Sensor Circuit

Astra H

C-004 - Rear Right Wheel Sensor Circuit

Test

Work Order Description

Nominal Value
T001

Check: Component
  • Check cable shielding of following component:
    B76R Sensor - Wheel Speed, Rear, Right

Test okay?
Yes: No:
T002

Check: Mechanical Functionality
  • Check the following component for damage and contamination:
    B76R Sensor - Wheel Speed, Rear, Right

Mechanical function check okay?
Yes: No:
T003

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Open & Start
Yes: No:
T004

Check: Short to Voltage of Signal Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    A37 Control Unit - Anti-Lock Brake System
  • Ignition ON
  • Measure voltage between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11, 12
    &
    Ground

Note:

If the vehicle is equipped with Open & Start, perform the measurement within 15s after Ignition ON.

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T005

Check: Short to Ground of Signal Circuit
  • Disconnect wiring harness connector from:
    B76R Sensor - Wheel Speed, Rear, Right
  • Measure resistance between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11, 12
    &
    Ground

greater than 500 kOhm
Resistance Measurement Current Value: kOhm
Yes: No:
T006

Check: Short Circuit in Wiring Harness
  • Measure resistance between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11

greater than 500 kOhm
Resistance Measurement Current Value: kOhm
Yes: No:
T007

Check: Interruption of Signal Circuit
  • Connect fused jumper wire to:
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 1
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 2
  • Measure resistance between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11

less than 5 Ohm
Resistance Measurement Current Value: Ohm
Yes: No:
T008

Check: Component
  • Remove fused jumper wire
  • Connect wiring harness connector to:
    A37 Control Unit - Anti-Lock Brake System
  • Ignition ON
  • Measure voltage between the following terminals:
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector terminal 1
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector terminal 2

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T009

Check: Component
  • Ignition OFF
  • Disconnect wiring harness connector from:
    A37 Control Unit - Anti-Lock Brake System
  • Connect wiring harness connector to:
    B76R Sensor - Wheel Speed, Rear, Right
  • Connect fused jumper wire to:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11
    &
    Battery Voltage (Positive Terminal)
  • Measure current between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    Ground
  • Vehicle jacked-up and rear right wheel slowly turned by hand

The current alternates between ca. 7 mA and ca. 14 mA
Yes: No:
T010

Check: Short to Voltage of Signal Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    A37 Control Unit - Anti-Lock Brake System
  • Ignition ON
  • Measure voltage between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11, 12
    &
    Ground

less than 0.3 V
Voltage Measurement Current Value: V
Yes: No:
T011

Check: Short to Ground of Signal Circuit
  • Ignition OFF
  • Disconnect wiring harness connector from:
    B76R Sensor - Wheel Speed, Rear, Right
  • Measure resistance between the following terminals:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11, 12
    &
    Ground

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


Result

Cause Of Fault
E001 Result: Defective Component
  • Defective component:
    A37 Control Unit - Anti-Lock Brake System

Important:

For vehicles with ESP, the Steering Angle Sensor and the Yaw Rate Sensor have to be calibrated by using the diagnostic tester after replacing the control unit.
E002 Result: Defective Component
  • Defective component:
    B76R Sensor - Wheel Speed, Rear, Right
E003 Result: Interruption
  • Circuit interruption between:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 1
    or
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 2
E004 Result: Short Circuit in Wiring Harness
  • Short circuit in wiring harness between:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 1
    &
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 2
E005 Result: Short to Ground
  • Short circuit to ground between:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 1
    or
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 2
E006 Result: Short to Voltage
  • Short circuit to voltage between:
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 11
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 1
    or
    A37 Control Unit - Anti-Lock Brake System
    Wiring harness connector (wiring harness side) terminal 12
    &
    B76R Sensor - Wheel Speed, Rear, Right
    Wiring harness connector (wiring harness side) terminal 2
E007 Result: Defective Component
  • Following system/component is faulty:
    B76R Sensor - Wheel Speed, Rear, Right
E008 Result: Defective Component
  • Defective component:
    Shielding of signal leads





C-005 Wheel Sensor Circuits > < C-003 Rear Left Wheel Sensor Circuit