Triumph Rocket 3 GT 2021 - Page 1093

1055
ABS ECM Internal Error
Fault
Code
Possible cause
Action
C1641
ABS ECM internal error
Incorrect wheel speed sensor air gap
Damaged or dirty pulser ring
Loose or incorrectly installed wheel
speed sensor
Make sure ABS modulator/ECM
connector is secure.
Proceed to pinpoint test 1:
Pinpoint Tests
Test
Result
Action
1
Measure the air gap of the wheel speed
sensors between the sensor and the pulser
ring:
- Air gap between 0.37 mm to 1.23 mm
OK
Proceed to test 2
Faulty
Rectify the fault,
proceed to test 4
2
Check the pulser rings for damage or
contamination by road grime or ferrous
metal filings.
OK
Proceed to test 3
Faulty
Clean or replace the
ABS pulser ring,
proceed to test 4
3
Check the wheel speed sensors for correct
installation, and the fixings for correct
torque.
OK
Proceed to test 4
Faulty
Rectify the fault,
proceed to test 4
4
Clear fault code and test ABS to verify fault
cleared.
OK
Action complete -
quit test
Fault still
present
Contact Triumph
service