Triumph Rocket III Classic Service Manual page 317

Fuel System/Engine Management
( Lambda Sensor Heater - Rocket III and Classic
(
Fault Code
Possible cause Action
POO31 Lambda sensor heater circuit short View
&
note "freeze frame" data if
circuit to ground or open circuit. available.
View
&
note "sensor" data.
Ensure sensor connector is secure.
Disconnect ECM and proceed to
pinpoint test 1:-
POO32 Lambda sensor heater circuit, short Disconnect lambda sensor and
circuit to battery. proceed to pinpoint test 4:-
Pinpoint Tests
Test
Result Action
1 Check cable and terminal integrity: OK Disconnect lambda sensor and proceed to
- ECM pin B33
test 2
Faulty Rectify fault, proceed to test 5
2 Check cable for short circuit:
OK
Proceed to test 3
- ECM pin B33 to ground
Short circuit
Locate and rectify wiring fault, proceed to test
5
3 Check cable continuity:
OK Proceed to test 5
- ECM pin B33 to sensor pin 3
Open circuit
Locate and rectify wiring fault, proceed to test
- ECM pin A20 to sensor pin 4
5
4 Check cable for short circuit:
OK
Renew lambda sensor and proceed to test 5
- ECM pin B33 to ECM pin A20
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. Check adaption status.
Circuit Diagram
EMS Relay
fuse Box
fuse 6
Fault still present
Contact Triumph service
lambda Sensor
ECM
------NK
'-----w
Bll
'------~=+::
'------------NKt
Service Manual - Rocket III / Classic / Touring
11.113