Fault Code | Possible cause | Action |
P1690 | Fault in CAN communication between ECM and instrument pack. | View & note 'freeze frame' data if available. View & note 'sensor' data. Ensure instrument connector is secure. Disconnect ECM and proceed to pinpoint test 1: |
Pinpoint Tests
Test | Result | Action |
1. Check cable and terminal integrity: ECM pin B27 ECM pin B28 Instrument pin 4 Instrument pin 5 | OK | Disconnect instruments and proceed to test 2 |
Faulty | Rectify fault, proceed to test 4 | |
2. Check cable for short circuit: ECM pin B27 to B28 ECM pin B27 to ground ECM pin B28 to ground | OK | Proceed to test 3 |
Faulty | Locate and rectify wiring fault, proceed to test 4 | |
3. Check cable continuity: ECM pin B28 to Instrument pin 4 ECM pin B27 to Instrument pin 5 | OK | Contact Triumph service |
Open circuit | Locate and rectify wiring fault, proceed to test 4 | |
4. Reconnect harness, clear fault code and run engine | OK | Action complete, quit test |
Fault still present | Contact Triumph service |