FUEL SYSTEM/ENGINE MANAGEMENT 9
SENSOR SUPPLY VOLTAGE
Fault Code
Possible cause
Action
P1560
Engine control module / wiring fault
View & note diagnostic tool `sensor' data.
Disconnect ECM and proceed to pinpoint
test 1
Pinpoint Tests
Test
Result
Action
1
Check cable and terminal integrity:
—
ECM pin 12
OK
Disconnect throttle position sensor and air
pressure sensor, proceed to test 2
Faulty
Rectify fault, proceed to test 4
2
Check for short circuit:
— ECM pin 12 to ECM pin 34
OK
Reconnect ECM, proceed to test 3
Short circuit
Locate and rectify wiring fault, proceed to
test 4
3
With ignition `on', check voltage at:
— ECM pin 12
4.5 to 5.5v
Proceed to test 4
Faulty
Renew ECM, proceed to test 4
4
Reconnect harness, clear fault code and
run engine to verify fault cleared
OK
Action complete — quit test
Fault still present
Contact Triumph service
Circuit Diagram
Fusebox
Engine Control Module
LH
H
^j
to
N C7
I I
Alarm Control
2
C7
Y
>-
Y Y
Unit
m^
m
^
Y Y
Y
Barometric
Throttle
Pressure
G
R
Position
Sensor
Sensor
9.69