Triumph Rocket 3 GT 2021 - Page 731

693
Cooling Fan Controller
Fault
Code
Possible cause
Action
P1552
Cooling fan controller short circuit to
ground or open circuit
View and note diagnostic software
'sensor' data. Make sure fan relay
connector is secure. Disconnect
engine ECM and proceed to pinpoint
test 1:
P1553
Cooling fan controller short circuit to
battery positive or over temp
Disconnect engine ECM and fan relay
and proceed to pinpoint test 4:
Pinpoint Tests
Test
Result
Action
1
Check cable and terminal integrity:
- Fan speed controller connector pin 1
- Fan speed controller connector pin 2
- Fan speed controller connector pin 3
- Fan speed controller connector pin 4
- Engine ECU connector pin C13
OK
Disconnect fan relay,
proceed to test 2 for P1552
Disconnect fan relay,
proceed to test 3 for P1553
Faulty
Rectify fault, proceed to
test 5
2
Check cable for short circuit:
- Fan speed controller connector pin 1
to ground
- Fan speed controller connector pin 3
to ground
- Fan speed controller connector pin 4
to ground
OK
Proceed to test 3
Short
Circuit
Locate and rectify wiring
fault, proceed to test 5
3
Check cable for short circuit:
- - Fan speed controller connector pin
2 to pin 1
- Fan speed controller connector pin 3
to pin 1
- Fan speed controller connector pin 4
to pin 1
OK
Proceed to test 4
Short
Circuit
Locate and rectify wiring
fault, proceed to test 5