Triumph Rocket III Classic Service Manual page 323

Fuel System/Engine Management
Instrument Communication (CAN) - Rocket III Touring
Fault Code Possible cause Action
P1690 Fault
in
CAN communication between View
&
note 'freeze frame' data if
ECM and Instrument pack available.
View & note 'sensor' data.
Ensure Instrument connector is secure.
Disconnect ECM and proceed to
pinpointtest 1:
Pinpoint Tests
Test Result Action
1 Check cable and terminal integrity: OK Disconnect instruments and proceed to test 2
- ECM pin B28 Faulty Rectify fault, proceed to test 4
- ECM pin B27
- Instrument pin 7
- Instrument pin 8
2 Check cable for short circuit:
OK Proceed to test 3
- ECM pin B28 to ground
Faulty Locate and rectify wiring fault, proceed to test
- ECM pin B27 to ground 4
3 Check cable continuity: OK Contact Triumph service
- ECM pin B28 to Instrument pin 7 Open circuit Locate and rectify wiring fault, proceed to test
- ECM pin B27 to Instrument pin 8
4
5 Reconnect harness, clear fault code and run OK Action complete, quit test
engine
Fault still present Contact Triumph service
Circuit Diagram
KM
Instruments
SelVice Manual - Rocket Ill/ Classic / Touring
11.119