9 FUEL SYSTEM/ENGINE MANAGEMENT
FUEL INJECTORS
Fault Code
Possible cause
Action
P0201/02/03
Injection system fault — Injector 1/2/3
View & note diagnostic tool `freeze frame'
—
Misfire indicates open circuit
data if available.
—
Flooding indicates short circuit
Ensure relevant injector connector is
secure. Disconnect ECM and proceed to
pinpoint test 1
P1201/02/03
Open or short circuit — Injector 1/2/3
P1205/06/07
Short circuit to battery+ — Injector 1/2/3
Disconnect relevant injector and proceed
to pinpoint test 5
Pinpoint Tests
Test
Result
Action
1
Check cable and terminal integrity:
OK
Proceed to test 2
—
ECM pin 2
Faulty
Rectify fault, proceed to test 7
—ECMpin30
— ECM pin 31
2
Check resistance value:
15.5 to 16.3Q
Disconnect relevant injector and proceed to
—
ECM pin 1 to ECM pin 2 (injector 1)
test 3
— ECM pin 1 to ECM pin 31 (injector 2)
Open circuit
Proceed to test 4
— ECM pin 1 to ECM pin 30 (injector 3)
Short circuit
Disconnect relevant injector and proceed to
test 5
3
Check cable for short circuit:
OK
Proceed to test 7
—
ECM pin 2 to earth
Short. circuit
Locate and rectify wiring fault, proceed to
—
ECM pin 31 to earth
test 7
— ECM pin 30 to earth
4
Check cable continuity:
OK
Proceed to test 6
— ECM pin 1 to relevant injector pin 2
Open circuit
Locate and rectify wiring fault, proceed to
— ECM pin 2 to injector 1 pin 1
test 7
— ECM pin 31 to injector 2 pin 1
— ECM pin 30 to injector 3 pin 1
5
Check cable for short circuit:
OK
Proceed to test 6
— ECM pin 1 to ECM pin 2 (injector 1)
Short circuit
Locate and rectify wiring fault, proceed to
— ECM pin 1 to ECM pin 31 (injector 2)
test 7
— ECM pin 1 to ECM pin 30 (injector 3)
6
Check relevant injector resistance:
15.5 to 16.3Q
Proceed to test 7
— Injector pin 1 to injector pin 2
Faulty
Renew relevant injector, proceed to test 7
7
Reconnect harness, clear fault code and
OK
Action complete — quit test
run engine to verify fault cleared
Fault still present
Contact Triumph service
ECM
Circuit Diagram
Fusebox
Main
Power
Fuel Injectors
8
Relay
NK
1
2
3
a a
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N^
N> N'-
K
i
>
r
7^2
K
z
K
z
O
N Engine
Control
Module
9.60
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