Triumph Rocket III Classic Service Manual page 286

Fuel System/Engine Management
Primary Throttle Position Sensor - Rocket III Touring
Fault Code Possible cause Action
P0122 Throttle position sensor low input View
8.
note diagnostic tool 'freeze
P0123
voltage (short to ground or open frame' data if available.
circuit>
View
8.
note diagnostic tool 'sensor'
Throttle position sensor high input data.
voltage (short circuit to sensor supply) Ensure sensor connector is secure.
Disconnect ECM and proceed to
pinpoint test 1:-
Pinpoint Tests
Test
Result Action
1 Check cable and terminal integrity: OK Disconnect sensor and proceed to
- ECM pin Al0
test 2
- ECM pin BOl
- ECM pin B20
Faulty Rectify fault, proceed to test 5
2 Check cable for short circuit: OK
Proceed to test 3
- ECM pin A 10 to ground
Short circuit Locate and rectify wiring fault, proceed to test
5
3 Check cable continuity: OK
Proceed to test 4
- ECM pin BOl to sensor pin 1
- ECM pin B20 to sensor pin 2
- ECM pin A 10 to sensor pin 3
Open circuit Locate and rectify wiring fault, proceed to test
5
4
Check cable for short circuit:
OK Renew throttle position sensor, proceed to
- ECM pin A 10 to ECM pin B01
test 5
- ECM pin A 10 to ECM pin B20
Short circuit Locate and rectify wiring fault, proceed to test
5
5 Reconnect harness, clear fault code and run OK
Action complete - quit test
engine to verify fault cleared
Fault still present Contact Triumph service
11.82
Setvice Manual - Rocket Ill/ Classic / Touring