Triumph Speed Triple Service Manual page 225

Fuel SystemlEngine Management
I
Vehicle Speed Sensor
Pinpoint Tests
Fault Code
PO500
Test
Possible cause
Vehicle speed sensor circuit fault
1 Check cable and terminal integrity:
-
ECM pin A21
-
Instrument pin 16
2 Check cable for short circuit:
-
ECM pin A21 to ground
-
ECM pin A21 to ECM pin A01
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ECM pin A21 to battery
3 Check cable for continuity:
-
ECM pin A21 to sensor pin 3
-
Sensor pin 2 to ground
-
Instruments pin 16 to sensor pin 1
4 Reconnect harness, clear fault code and
run engine.
Action
View & note "freeze frame" data if
available.
View & note "sensor" data.
Ensure sensor connector is secure.
Disconnect ECM and proceed to
pinpoint test1 :
Result
I
Action
I
OK
I
Proceed to test 3
OK
Faulty
Faulty
Disconnect ambient pressure sensor and
proceed to test 2
Rectify fault, proceed to test 4
Locate and rectify wiring fault, proceed to
test 4
OK
Open circuit
Renew vehicle speed sensor and proceed
to test 4
Locate and rectify wiring fault, proceed to
test 4
OK
Circuit Diagram
Action complete, quit test
Fault still present
Alarm Kill
Control Unit Switch
Contact Triumph service
Instruments
ECM
F p L F
Road
Speed Sensor
I
Service
Manual
-
Speed Triple