Fault Code | Possible cause | Action |
P1659 | EMS ignition voltage input circuit fault | Disconnect ECM and proceed to pinpoint test 1: |
Pinpoint Tests
Test | Result | Action |
1. Check Fuse box Fuse 2 integrity | OK | Proceed to test 3 |
Faulty | Proceed to test 2 | |
2. Check cable for short circuit: ECM pin A 19 to ground | OK | Replace Fuse 2 and proceed to test 3 |
Short circuit | Locate and rectify wiring fault, replace Fuse 2 and proceed to test 5 | |
3. Check cable and terminal integrity: ECM pin A19 Alarm Connector pin 1 Alarm Connector pin 2 Right hand switchcube pin 2 Right hand switchcube pin 5 | OK | Proceed to test 4 |
Faulty | Rectify fault, proceed to test 5 | |
4. Check cable continuity: ECM pin A19 to fuse box Fuse 2, note that the engine stop switch must be in the 'RUN' position and any Alarm fitted must be disarmed | OK | Proceed to test 5 |
Open circuit | Locate and rectify wining, immobiliser or engine stop switch 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 |