Triumph Rocket III Classic Service Manual page 276

Fuel System/Engine Management
Idle Speed Control - Rocket III and Classic
Fault Code Possible cause Action
P0505
ISC stepper motor / wiring fault View
8.
note diagnostic tool 'freeze
frame' data if available.
View
8.
note diagnostic tool 'sensor'
data.
Ensure sensor 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 B23 Faulty Rectify fault, proceed to test 7
- ECM pin B07
(
- ECM pin
B11
- ECM pin B03
2 Check resistance value:
4Q to 12Q
Disconnect stepper motor and proceed to test
3
- ECM pin B23 to ECM pin B07 Open circuit Proceed to test 4
- ECM pin B
11
to ECM pin B03
Short circuit Disconnect stepper motor and proceed to test
5
3 Check cable for short circuit: OK Proceed to test 7
- ECM pin B23 to earth Short circuit Locate and rectify wiring fault, proceed to test
- ECM pin B07 to earth
7
- ECM pin B 11 to earth
- ECM pin B03 to earth
4 Check cable continuity:
OK Proceed to test 6
(
- ECM pin B23 to stepper motor pin A Open circuit
Locate and rectify wiring fault, proceed to test
- ECM pin B07 to stepper motor pin A 1
7
- ECM pin B 11 to stepper motor pin B
- ECM pin B03 to stepper motor pin B 1
5 Check cable for short circuit: OK Proceed to test 6
- ECM pin B23 to ECM pin B07 Short circuit Locate and rectify wiring fault, proceed to test
- ECM pin B 11 to ECM pin B03
7
6 Check stepper motor resistance:
4Q to 12Q
Proceed to test 7
- Motor pin A to motor pin A 1 Faulty Renew stepper motor, proceed to
- Motor pin B to motor pin B 1 test 7
7 Reconnect harness, clear fault code and run OK Action complete - quit test
diagnostic tool function test to visually verify
operation of stepper motor
Fault still present Contact Triumph service
11,72
SelVice Manual - Rocket Ill/ Classic / Touting