Pinpoint Tests - Triumph Thunderbird Service Manual

Front or Rear Wheel Actuator (Hydraulic Control> Wheel Lock
Fault Code
Possible cause Action
C1641; C1643
Binding brake Ensure ABS ECM connector is secure.
Incorrect Wheel speed sensor air gap Proceed to pinpoint test 1:
Loose or incorrectly installed wheel
speed sensor
Pinpoint Tests
Test
Result Action
1 Check the relevant wheel for brake bind OK Proceed to test 2
caused by caliper or master cylinder faults,
or other mechanical causes
Faulty Rectify the fault and proceed to test 4
2 Measure the air gap of the wheel speed OK Proceed to test 3
sensor between the sensor and the pulser
ring:
- Air gap between 0.1 mm to 1.5 mm
Faulty
Rectify the fault and proceed to test 4
3 Check the wheel speed sensors for correct
OK
Proceed to test 4
installation, and the fixings for correct
torque
Faulty
Rectify the fault and proceed to test 4
4 Clear fault code and test ABS to verify fault
OK Action complete - quit test
cleared
Fault still present Contact Triumph service
SelVice Manual - Thunderbird
12.61