Vehicle speed output — pinpoint tests (Triumph Rocket III)

Fault Code	Possible cause	Action
P1500	Vehicle Speed Circuit Fault	View & note "freeze frame" data if available. View & note "sensor" data. Ensure instrument connector is secure. Disconnect ECM and proceed to pinpoint test 1

Pinpoint tests

Test	Result	Action
1 Check cable and terminal integrity: - ECM pin 832 - ECM pin 808 - ECM pin B09 - ECM pin A06	OK	Disconnect instruments and proceed to test 2
	Faulty	Rectify fault, proceed to test 5
2 Check cable for short circuit: - ECM pin B32 to ground	OK	Proceed to test 3
2 Check cable for short circuit: - ECM pin B32 to ground	Short circuit	Locate and rectify wiring fault, proceed to test 5
3 Check cable continuity: - Instrument pin 13 to ECM pin B32 - Instrument pin 10 to ground - Instrument pin 2 to alarm control unit pin 1	OK	Proceed to test 4
	Open circuit	Locate and rectify wiring fault, proceed to test 5
4 Check cable for short circuit: ECM pin A20 to ECM pin B32	OK	Renew instruments, proceed to test 5
4 Check cable for short circuit: ECM pin A20 to ECM pin B32	Short circuit	Locate and rectify wiring fault, proceed to test 5
5 Reconnect harness, clear fault code and run diagnostic tool function test to visually verify operation of speedometer.	OK	Action complete - quit test
	Fault still present	Contact Triumph service

The article is taken from the website Motoinstruction.ru

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This article has been reviewed: Serafim Sazonov

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