Coolant temperature sensor — pinpoint tests (Triumph Rocket III)

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Fault Code	Possible cause	Action
P0118	Open circuit, or short circuit to battery+	View & note diagnostic tool "freeze frame" data if available. View & note diagnostic tool "sensor" data. Ensure sensor connector is secure. Disconnect ECM and proceed to pinpoint test 1
P0117	Short circuit to ground	Disconnect sensor and proceed to test 6

Pinpoint tests

Test	Result	Action
1 Check cable and terminal integrity: - ECM pin A09 - ECM pin A07	OK	Proceed to test 2
	Faulty	Rectify fault, proceed to test 7
2 Check resistance value: - ECM pin A09 to ECM pin A07 (Temperature dependent,-see below)	OK	Disconnect temp sensor and proceed to test 6
	Open circuit	Disconnect sensor and proceed to test 3
	Short circuit	Disconnect temp sensor and proceed to test 4
3 Check cable continuity: - ECM pin A09 to sensor pin 1 - ECM pin A07 to sensor pin 2	OK	Proceed to test 5
	Open circuit	Locate and rectify wiring fault, proceed to test 7
4 Check cable for short circuit: - ECM pin A09 to ECM pin A07	OK	Proceed to test 5
	Short circuit	Locate and rectify wiring fault, proceed to test 7
5 Check sensor resistance: - Sensor pin 1 to sensor pin 2 (Temperature dependent,-see below)	OK	Proceed to test 7
	Faulty	Renew temp sensor, proceed to test 7
6 Check cable for short circuit: - ECM pin A09 to ground	OK	Proceed to test 7
	Short circuit	Locate and rectify wiring fault, proceed to test 7
7 Reconnect harness, clear fault code and run engine to verify fault cleared	OK	Action complete - quit test
	Fault	Contact Triumph service

Circuit diagram

Resistance data under typical conditions:

• Warm engine: 200 to 400Ω
• Cold engine:
• 20°C ambient — 2.35 to 2.65KΩ
• -10°C ambient — 8.50 to 10.25KΩ

(Information copied from the resource MOTOINSTRUCTION)

See this article in russian language

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Article about repair motorcycles «Triumph Rocket III» (2004-2018): «Coolant temperature sensor — pinpoint tests»: https://motoinstruction.ru/en/Triumph/Rocket/III/engine/fuel/111882 <a href="https://motoinstruction.ru/en/Triumph/Rocket/III/engine/fuel/111882">Coolant temperature sensor — pinpoint tests</a> - article about repair motorcycles «Triumph Rocket III» (2004-2018) from section «Fuel and control system». [url=https://motoinstruction.ru/en/Triumph/Rocket/III/engine/fuel/111882]Coolant temperature sensor — pinpoint tests[/url] - article about repair motorcycles «Triumph Rocket III» (2004-2018) from section «Fuel and control system».