Triumph Rocket III Classic Service Manual page 335

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Fuel System/Engine Management
Ambient Pressure Sensor - Rocket '" Touring
Fault Code Possible cause Action
Pll07 Ambient pressure sensor circuit short View 8. note "freeze frame" data if
circuit to ground available.
View 8. note "sensor" data.
Ensure sensor connector is secure.
Disconnect ECM and proceed to
pinpoint test 1:-
Pll08 Ambient pressure sensor circuit, short Disconnect ambient pressure sensor
circuit to supply or open circuit
and proceed to pinpoint test 4:-
Pinpoint Tests
Test Result Action
1 Check cable and terminal integrity: OK Disconnect ambient pressure sensor and
proceed to test 2
- ECM pin A27 Faulty Rectify fault, proceed to test 5
- ECM pin B20
- ECM pin B01
2 Check cable for short circuit: OK
Proceed to test 3
- ECM pin A27 to ECM B20 Short circuit Locate and rectify wiring fault, proceed to test
5
3 Check cable for continuity: OK Renew ambient pressure sensor and proceed
to test 5
- ECM pin A27 to sensor pin 1 Open circuit Locate and rectify wiring fault, proceed to test
- ECM pin B20 to sensor pin 2
5
- ECM pin B01 to sensor pin 3
4 Check cable for short circuit: OK Renew ambient pressure sensor and proceed
- ECM pin A27 to ECM pin B01
to test 5
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
Circuit Diagram
Fault still present
ECM
Amblent
Pressure
Sensor
~ lO
KB=1J
All KP I
BOt K 3
Contact Triumph service
SelVice Manual - Rocket'" I Classic I Touring
11.131