| Fault Code | Possible cause | Action |
| P1631 | Fall detection switch low input voltage | View & note "freeze frame" data if available. View & note "sensor" data. Ensure switch connector is secure. Disconnect ECM and proceed to pinpoint test 1 |
| P1632 | Fall detection switch high input voltage or open circuit |
Pinpoint tests
| Test | Result | Action |
| 1 Check cable and terminal integrity: - ECM pin A04 | OK | Disconnect sensor and proceed to test 2 |
| Faulty | Rectify fault, proceed to test 6 | |
| 2 Check cable for short circuit: - ECM pin A04 to ground - ECM pin A04 to ECM pin A20 | OK | Proceed to test 3 |
| Short circuit | Locate and rectify wiring fault, proceed to test 6 | |
| 3 Check cable continuity: - ECM pin A01 to sensor pin 4 - ECM pin A04 to sensor pin 5 - ECM pin A07 to sensor pin 6 | OK | Proceed to test 4 |
| Open circuit | Locate and rectify wiring fault, proceed to test 6 | |
| 4 Check cable for short circuit: - Sensor pin 4 to sensor pin 5 - Sensor pin 4 to sensor pin 6 | OK | Proceed to test 5 |
| Short circuit | Locate and rectify wiring fault, proceed to test 6 | |
| 5 Check voltage (with ignition on): - Sensor pin 4 | 12V (battery voltage) | Renew fall detection switch and proceed to test 6 |
| Less than 12V | Locate and rectify wiring fault, proceed to test 6 | |
| 6 Reconnect harness, clear fault code. | OK | Action complete, quit test |
| Fault still present | Contact Triumph service |
Circuit diagram
