Pinpoint Tests - Triumph Thunderbird Service Manual

Fuel System/Engine Management
Fuel Iniectors
Fault Code Possible cause Action
P0201/02
Injection system fault - Injector 1/2 View
8-
note diagnostic software
- Misfire indicates open circuit
'freeze frame' data if available.
- Flooding indicates short circuit
Ensure relevant injector connector is
secure.
Disconnect ECM and proceed to
pinpoint test 1:
Pinpoint Tests
Test Result Action
1 Check cable and terminal integrity: OK Proceed to test 2
- ECM pin A15
Faulty
Rectify fault, proceed to test 7
- ECM pin A14
- EMS relay pin 5
2 Check resistance value: 9Q to 12Q
Proceed to test 3
- ECM pin A06 to ECM pin A 15 (injector 1)
- ECM pin A06 to ECM pin A 14 (injector 2)
Open circuit
Disconnect relevant injector and proceed to
test 4
Short circuit
Disconnect relevant injector and proceed to
test 5
3 Check cable for short circuit to ground: OK Proceed to test 7
- ECM pin A 15 to earth
Short circuit Locate and rectify wiring fault, proceed to
- ECM pin A 14 to earth
test 7
4 Check cable continuity:
OK Proceed to test 6
- EMS relay pin A06 to relevant injector pin 2 Open circuit Locate and rectify wiring fault, proceed to
- ECM pin A 15 to injector 1 pin 1
test 7
- ECM pin A 14 to injector 2 pin 1
5 Check cable for short circuit to supply box: OK Proceed to test 6
- ECM pin A06 to ECM pin A 15 (inj 1) Short circuit Locate and rectify wiring fault, proceed to
- ECM pin A06 to ECM pin A 14 (inj 2)
test 7
6 Check relevant injector resistance: 12.5Q to 14.0Q 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 run OK
Action complete - quit test
engine to verify fault cleared
Fault still present Contact Triumph service
10.38
SelVice Manual - Thunderbird