Triumph Rocket III Classic Service Manual page 343

Fuel System/Engine Management
Fuel Level Gauge - Rocket'" and Classic
Fault Code Possible cause Action
PD656
Accessory fuel level gauge circuit fault Ensure fuel level gauge connector is
secure.
Disconnect ECM and proceed to
pinpoint test 1:-
Pinpoint Tests
Test Result Action
1 Check cable and terminal integrity: OK Disconnect gauge and proceed to test 2
- ECM pin ADS
Faulty
Rectify fault, proceed to test 4
- Gauge pin 1
(
2 Check cable for short circuit: OK Proceed to test 3
- ECM pin ADS to ground Short circuit Locate and rectify wiring fault, proceed to test
- ECM pin ADS to ECM pin A2D
4
3 Check cable continuity: OK
Renew gauge and proceed to test 4
- ECM pin ADS to gauge pin 1 Open circuit Locate and rectify wiring fault, proceed to test
- Gauge pin 2 to earth
4
- Gauge pin 3 to alarm control unit pin 1
4 Reconnect harness, clear fault code. OK Action complete, quit test
Fault still present
Contact Triumph service
Circuit Diagram
Alarm
En~ineStop
Control Unit
witch
W
Accesso~
fuelleve
fuse Box
Gauge
J
LGN
fuseS
G
~
GR
ECM
BG
MS
B
lf :
A06
BOO
B09
Service Manual - Rocket'" I Classic I Touring
11.139