Triumph Rocket 3 GT 2021 - Page 1356

1318
Chassis ECM Internal Power Supply Malfunction
Fault
Possible cause
Action
C1003
Chassis ECM internal
power
supply malfunction
If DTC C1002 is also present, rectify DTC
C1002 (see Power Supply Rail
Overvoltage/Undervoltage) then erase
DTCs. Monitor for further instances.
If C1002 is not present, check and record all
other DTCs and contact Triumph service.
Starter Motor Switch Malfunction
Fault
Possible cause
Action
C1008
Starter motor switch
malfunction
Disconnect chassis ECM connector A
and proceed to pinpoint test 1:
Pinpoint Tests
Test
Result
Action
1
Check cable and terminal integrity:
- Keyless ECM pin 11
OK
Proceed to test 2
Faulty
Rectify fault, proceed to test 5
2
Check cable for short circuit:
- Keyless ECM pin 11 to ground
OK
Proceed to test 3
Short circuit
Rectify fault, proceed to test 5
3
Check cable for short circuit:
- Keyless ECM pin 11 to keyless
ECM pin 12
OK
Proceed to test 4
Short circuit
Rectify fault, proceed to test 5
4
Check cable continuity:
- Keyless ECM pin 11 to Right
Hand Switch housing connector
A (Black) pin 3
- Keyless ECM pin 11 to Starter
Relay pin 1
OK
Proceed to test 5
Open circuit
Rectify fault, proceed to test 5
5
Reconnect harness, clear fault code
and run engine.
OK
Action complete – quit test
Fault still
present
Contact Triumph service