Chassis, generic

C05D8 4WD/AWD Clutch A Actuator Control Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

The AWD controller sees no plausible current path in the output that drives the actuator of clutch A, typically an open coil, motor winding or wire. Depending on the design, the actuator is an electromagnetic coil (JTEKT ITCC: coil current sets the transmitted torque) or an electric motor that turns a ball ramp through a worm gear, as in a Magna disconnect coupling. Ford names C05D8:19 for the Bronco Sport with the 2.0L engine, model years 2021–2022, in SSM 51117, together with C05D9:71 and the clutch B codes C05E7/C05E8; the cause there is a misaligned magnet ring in the rear drive unit motor, fixed by replacing the motor alone. With the circuit open the clutch cannot close, AWD is switched off and a warning appears.

Likely causes

Actuator coil or motor winding open
Rear drive unit motor with misaligned magnet ring (Ford Bronco Sport 2.0L)
Broken wire or loose connector at the rear axle
Output stage in the AWD control module faulty

Symptoms

  • AWD warning lamp or message, vehicle drives on one axle only
  • Wheel spin on slippery surfaces when pulling away

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–1,500
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

awd clutch a actuatorawd control module

Related codes

C05D9C05DAC05DBC05E7C0095

References: static.nhtsa.gov, patents.google.com, jtekt.co.jp.