Fault Code | Possible cause | Action |
P0122 P0123 | Throttle position sensor low input voltage (short to ground or open circuit) Throttle position sensor high input voltage (short circuit to sensor supply) | View & note diagnostic software 'freeze frame' data if available. View & note diagnostic software 'sensor' data. Ensure sensor connector is secure. Disconnect ECM and proceed to pinpoint test 1: |
Pinpoint Tests
Test | Result | Action |
1. Check cable and terminal integrity: ECM pin 801 ECM pin 820 ECM pin A10 | OK | Disconnect sensor and proceed to test 2 |
Faulty | Rectify fault, proceed to test 5 | |
2. Check cable for short circuit: ECM pin A 10 to ground | OK | Proceed to test 3 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | |
3. Check cable continuity: ECM pin A 10 to sensor pin 1 ECM pin 820 to sensor pin 2 ECM pin 801 to sensor pin 3 | OK | Proceed to test 4 |
Open circuit | Locate and rectify wiring fault, proceed to test 5 | |
4. Check cable for short circuit: ECM pin A 10 to ECM pin 801 ECM pin A 10 to ECM pin 820 | OK | Renew throttle position sensor, proceed to test 5 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | |
5. Reconnect harness, clear fault code and run engine to verify fault cleared | OK | Action complete - quit test |
Fault still present | Contact Triumph service |