Fault Code | Possible cause | Action |
P0444 | Open circuit or short circuit to earth | View & note diagnostic software 'sensor' data. Ensure purge valve connector is secure. Disconnect ECM and proceed to pinpoint test 1: |
P0445 | Short circuit to battery+ | Disconnect purge valve and proceed to pinpoint test 5: |
Pinpoint Teste
Test | Result | Action |
1. Check cable and terminal integrity: ECM pin 809 | OK | Proceed to test 2 |
Faulty | Rectify fault, proceed to test 7 | |
2. Check resistance value: ECM pin A06 to ECM pin 809 | 24 Ω to 28 Ω | Disconnect purge valve and proceed to test 3 |
Open circuit | Proceed to test 4 | |
Short circuit | Disconnect purge valve and proceed to test 5 | |
3. Check cable for short circuit: ECM pin 809 to earth | OK | Disconnect purge valve and proceed to test 7 |
Short circuit | Locate and rectify wiring fault, proceed to test 7 | |
4. Check cable continuity: ECM pin 809 to valve pin 2 ECM pin A06 to valve pin 1 | OK | Proceed to test 6 |
Open circuit | Locate and rectify wiring fault, proceed to test 7 | |
5. Check cable for short circuit: ECM pin A06 to ECM pin 809 | OK | Proceed to test 6 |
Short circuit | Locate and rectify wiring fault, proceed to test 7 | |
6. Check purge valve resistance: Valve pin 1 to valve pin 2 | 24 Ω to 28 Ω | Proceed to test 7 |
Faulty | Renew purge valve, proceed to test 7 | |
7. Reconnect harness, clear fault code and run diagnostic software function test to visually verify operation of purge valve | OK | Action complete - quit test |
Fault still present | Contact Triumph service |