Rear Wheel Sensor Open Circuit/Short Circuit; Pinpoint Tests - Triumph Thunderbird Service Manual

Rear Wheel Sensor Open Circuit/Short Circuit
Fault Code
Possible cause Action
C1613 Rear wheel speed sensor circuit fault Ensure ABS ECM connector is secure.
Ensure wheel speed sensor connector
is secure.
Disconnect ABS ECM connector and
proceed to pinpoint test 1:
Pinpoint Tests
Test Result Action
1
Check cable and terminal integrity:
OK Proceed to test 2
- ABS ECM connector pin 2 and ABS ECM Faulty Rectify fault, proceed to test 9
connector pin 18
2 Check cable for short circuit: OK Proceed to test 4
- ABS ECM connector pin 2 and Ground Short circuit Proceed to test 3
3 Disconnect the front wheel speed sensor OK Replace the wheel speed sensor, proceed to
connector. Check cable for short circuit: test 9
- Wheel speed sensor connector pin 2 Short circuit Locate and rectify wiring harness fault,
(motorcycle harness side) and Ground
proceed to test 9
4 Check cable for short circuit: OK Proceed to test 6
- ABS ECM connector pin 18 and Ground
Short circuit Proceed to test 5
5 Check cable for short circuit: OK Replace the wheel speed sensor, proceed to
test 9
- Wheel speed sensor connector pin 1 Short circuit Locate and rectify wiring harness fault,
(motorcycle harness side) and Ground proceed to test 9
6 Check cable continuity: OK Proceed to test 7
- ABS ECM connector pin 2 and Wheel Open circuit Locate and rectify wiring harness fault,
speed sensor connector pin 2 (motorcycle
proceed to test 9
harness side)
7 Check cable continuity: OK Proceed to test 8
- ABS ECM connector pin 18 and Wheel Open circuit Locate and rectify wiring harness fault,
speed sensor connector pin 1 (motorcycle
proceed to test 9
harness side)
8 Reconnect the front wheel speed sensor 3 mA to 14 mA Proceed to test 9
connector. Check the wheel speed sensor
operation:
-
Connect
a suitable voltage supply Faulty Replace the wheel speed sensor, proceed to
between 4.5 Vand 16 v between ABS ECM test 9
connector pin 2 (positive) and pin 18
<negative), and measure the current
consumption of the wheel speed sensor
Test continued overleaf
Service Manual - Thunderbird
12.55