Triumph Daytona 955i, Service Manual

Page: 209 / 375

9 FUEL SYSTEM/ENGINE MANAGEMENT
ROAD SPEED SENSOR
Fault Code
Possible cause
Action
P0500
Road speed sensor / wiring fault Ensure sensor connector is secure.
Check for 1 mm air gap between sensor
and wheel disc.
Disconnect ECM and proceed to pinpoint
test 1
Pinpoint Tests
Test
Result Action
1
Check cable and terminal integrity:
—
ECM pin 19
— ECM pin 34
OK Disconnect sensor and proceed to
test 2
Faulty
Rectify fault, proceed to test 5
2 Check cable for short circuit:
—
ECM pin 19 to earth
OK Proceed to test 3
Short circuit
Locate and rectify wiring fault, proceed to
test 5
3 Check cable continuity:
— ECM pin 1 to sensor pin 3
— ECM pin 19 to sensor pin 2
— ECM pin 34 to sensor pin 1
OK Proceed to test 4
Open circuit
Locate and rectify wiring fault, proceed to
test 5
4 Check cable for short circuit:
— ECM pin 19 to ECM pin 1
— ECM pin 19 to ECM pin 34
OK
Renew road speed sensor, proceed to test
5
Short circuit
Locate and rectify wiring fault, proceed to
test 5
5
Reconnect harness, clear fault code and
run bike to verify fault cleared
OK Action complete — quit test
Fault still present
Contact Triumph service
Circuit Diagram
ECM Main
Power Relay
Fusebox
Z Y
Y
}
Z
6 4 8 NK
z
Engine
a
0-a-
YN
c
T
Control
Module
O
co
m Y Y
Y
z
0
Road Speed ^ ^, N
Sensor
KB
9.68