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: ABS ECM connector pin 2 and ABS ECM connector pin 18 | OK | Proceed to test 2 |
Faulty | Rectify fault, proceed to test 9 | |
2. Check cable for short circuit: ABS ECM connector pin 2 and Ground | OK | Proceed to test 4 |
Short circuit | Proceed to test 3 | |
3. Disconnect the front wheel speed sensor connector. Check cable for short circuit: Wheel speed sensor connector pin 2 (motorcycle harness side) and Ground | OK | Replace the wheel speed sensor, proceed to test 9 |
Short circuit | Locate and rectify wiring harness fault, proceed to test 9 | |
4. Check cable for short circuit: ABS ECM connector pin 18 and Ground | OK | Proceed to test 6 |
Short circuit | Proceed to test 5 | |
5. Check cable for short circuit: Wheel speed sensor connector pin 1 (motorcycle harness side) and Ground | OK | Replace the wheel speed sensor, proceed to test 9 |
Short circuit | Locate and rectify wiring harness fault, proceed to test 9 | |
6. Check cable continuity: ABS ECM connector pin 2 and Wheel speed sensor connector pin 2 (motorcycle harness side) | OK | Proceed to test 7 |
Open circuit | Locate and rectify wiring harness fault, proceed to test 9 | |
7. Check cable continuity: ABS ECM connector pin 18 and Wheel speed sensor connector pin 1 (motorcycle harness side) | OK | Proceed to test 8 |
Open circuit | Locate and rectify wiring harness fault, proceed to test 9 | |
8. Reconnect the front wheel speed sensor connector. Check the wheel speed sensor operation: Connect a suitable voltage supply between 4.5 V and 16 v between ABS eCM connector pin 2 (positive) and pin 18 (negative), and measure the current consumption of the wheel speed sensor | 3 mA to 14 mA | Proceed to test 9 |
Faulty | Replace the wheel speed sensor, proceed to test 9 | |
9. Reconnect ABS ECM harness, clear fault code and test ABS to verify fault cleared | OK | Action complete - quit test |
Fault still present | Contact Triumph service |
Circuit Diagram
Wheel speed sensor current consumption data under typical conditions:
Voltage | Min | Typical | Max |
Low (4.5 V) | 3.1 mA | 4.1 mA | 5.3 mA |
High (16 V) | 8.1 mA | 10.5 mA | 13.6 mA |