Ignition Coils - Triumph Thunderbird Service Manual

Fuel System/Engine Management
Ignition Coils
Fault Code Possible cause Action
P0351/52/53/54 Ignition system fault - Ign coil 1/2/3/4 View
8-
note diagnostic software
'freeze frame' data if available.
Ensure relevant ign coil connector is
secure.
Disconnect ECM and proceed to
pinpoint test 1:
Pinpoint Tests
Note:
• Thunderbird has 4 ignition coils, two per cylinder. Ignition coils are numbered 1 to 4 from the left hand
<Cylinder 1) side.
Test Result Action
1 Check cable and terminal integrity: OK Proceed to test 2
- ECM pin B17 Faulty Rectify fault, proceed to test 7
- ECM pin A18
- ECM pin B18
- ECM pin A17
- EMS relay pin 5
2 Check resistance value: O.8Q to 12Q Proceed to test 3
ECM pin A06 to
Open circuit Disconnect relevant ignition coil and proceed
- ECM pin (ign coil 1) B17 to test 4
- ECM pin (ign coil 2) A 18
Short circuit Disconnect relevant ignition coil and proceed
- ECM pin (ign coil 3) B18 to test 5
- ECM pin ign coil 4) A 17
3 Check cable for short circuit: OK Proceed to test 7
- ECM pin to earth B17 Short circuit Locate and rectify wiring fault, proceed to
- ECM pin to earth A 18
test 7
- ECM pin to earth B18
- ECM pin to earth A 17
4 Check cable continuity: OK Proceed to test 6
EMS relay pin 5 to relevant ignition coil Open circuit Locate and rectify wiring fault, proceed to
pin 2 test 7
- ECM pin B17 to ign coil 1 pin 1
- ECM pin A 18 to ign coil 2 pin 1
- ECM pin B18 to ign coil 3 pin 1
- ECM pin A 17 to ign coil 4 pin 1
5 Check cable for short circuit: OK Proceed to test 6
ECM pin A06 to Short circuit Locate and rectify wiring fault, proceed to
- ECM pin (ign coil 1) B17
test 7
- ECM pin (jgn coil 2) A 18
- ECM pin (ign coil 3) B18
- ECM pin (ign coil 4) A 17
10.44
SelVice Manual - Thunderbird