The following pages will detail in table format the main components fitted to the Bosch EDC15C2 as fitted to a 1998 Citroen Xsara 2.0 HDI (engine code RHY). The following tables supply fault codes, voltage values, resistance values, as well as component harness plug information.

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Fault Code Table

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Bosch EDC15C2 ECM harness plug details

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Air Mass Sensor - Fault Code 0100

Location of component	ECM harness plug	Component harness plug connections	Test values	Vehicle operating conditions
Air Mass sensor located on the air filter assembly	Connected	Grey harness plug	Air Mass sensor harness plug connected Terminal 2 - Battery voltage Terminal 5 - Signal voltage varies between 0.1 to 4.7 volts. Ignition on - 0.5 volts Engine idling - 2.0 volts approx Terminal 6 - 0 to 0.2 volts	If Fault Code 0100 recorded by engine management ECM Engine speed is reduced to a maximum of 2200 RPM
	Disconnected	Grey harness plug	Air Mass sensor harness plug disconnected Check wiring continuity from Air Mass sensor harness plug Terminal 2 to ignition switch Terminal 5 to ECM terminal 13 Terminal 6 to ECM terminal 40

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Intake Air Temperature  Sensor - Fault Code 0110

Location of component	ECM harness plug	Component harness plug connections	Test values	Vehicle operating conditions
Intake air temperature sensor located in the Air Mass sensor	Connected	Grey harness plug	Air Mass sensor harness plug connected Terminal 1 - Signal voltage varies between 0.1 to 4.7 volts. 20 Degrees C - 2.0 volts approx Terminal 3 - 0 to 0.2 volts	If Fault Code 0110 recorded by engine management ECM ECM substitutes intake air temperature sensor with fixed temperature of 50 degrees C
	Disconnected	Grey harness plug	Air Mass sensor harness plug disconnected Check wiring continuity from Air Mass sensor harness plug Terminal 1 to ECM terminal 11 Terminal 3 to ECM terminal 40 Sensor resistance: Check resistance reading across terminals 1 & 3 on Air Mass sensor 0  Degrees C = 5200 to 6500 ohms 10 Degrees C = 3800 to 4200 ohms 20 Degrees C = 2300 to 2700 ohms 30 Degrees C = 1600 to 1800 ohms 40 Degrees C = 1000 to 1400 ohms

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Engine Coolant Temperature  Sensor - Fault Code 0115

Location of component	ECM harness plug	Component harness plug connections	Test values	Vehicle operating conditions
Engine coolant temperature (ECT) sensor located in cylinder head coolant outlet housing	Connected	Blue harness plug	ECT sensor harness plug connected Terminal 1 - Signal voltage varies between 0.1 to 4.7 volts. 20 Degrees C - 3.0 volts approx 80 Degrees C - 0.8 volts approx Terminal 2 - 0 to 0.2 volts	If Fault Code 0115 recorded by engine management ECM ECM substitutes engine coolant temperature sensor with fixed temperature of minus 10 degrees C during cranking, and 110 degrees C during engine running. In addition engine cooling fan is operated by ECM at all fast speed conditions.
	Disconnected	Blue harness plug	ECT sensor harness plug disconnected Check wiring continuity from ECT sensor harness plug Terminal 1 to ECM terminal 46 Terminal 2 to ECM terminal 45 Sensor resistance: Check resistance reading across terminals 1 & 2 on ECT sensor 0   Degrees C = 14000 to 16000 ohms 20 Degrees C = 5000 to 5400 ohms 40 Degrees C = 2300 to 2700 ohms 60 Degrees C = 1000 to 1400 ohms 80 Degrees C = 500 to 600 ohms 100 Degrees C = 300 to 350 ohms 120 Degrees C = 160 to 200 ohms

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Accelerator Pedal Position Sensor - Fault Code 0121 / 0221

Location of component	ECM harness plug	Component harness plug connections	Test values	Vehicle operating conditions
Accelerator pedal  position sensor located in engine compartment	Connected	Black harness plug	Accelerator pedal position  sensor harness plug connected Terminal 1 - Signal voltage varies between 0.5 (throttle closed) to 3.6 volts (throttle fully open). Terminal 2 - Signal voltage varies between 0.2 (throttle closed) to 1.8 volts (throttle fully open). Terminal 3 - 0 to 0.2 volts Terminal 4 - 4.8 to 5.2 volts	If Fault Code 0121 / 0221 recorded by engine management ECM Engine speed is reduced to a maximum of  2200 RPM
	Disconnected	Black harness plug	Accelerator pedal position  sensor harness plug disconnected Check wiring continuity from Accelerator pedal position sensor harness plug Terminal 1 to ECM terminal 15 Terminal 2 to ECM terminal 68 Terminal 3 to ECM terminal 22 Terminal 4 to ECM terminal 44

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Fuel Temperature Sensor - Fault Code 0180

Location of component	ECM harness plug	Component harness plug connections	Test values	Vehicle operating conditions
Fuel temperature  sensor located in high pressure common rail injection housing	Connected	Red harness plug	Fuel temperature sensor harness plug connected Terminal 1 - Signal voltage varies between 0.1 to 4.7 volts. 20 Degrees C - 3.0 volts approx 80 Degrees C - 0.8 volts approx Terminal 2 - 0 to 0.2 volts	If Fault Code 0180 recorded by engine management ECM ECM substitutes fuel temperature sensor with fixed temperature of 90 degrees C.
	Disconnected	Red harness plug	Fuel temperature sensor harness plug disconnected Check wiring continuity from Fuel temperature sensor harness plug Terminal 1 to ECM terminal 40 Terminal 2 to ECM terminal 39 Sensor resistance: Check resistance reading across terminals 1 & 2 on sensor 0  Degrees C = 8500 to 9500 ohms 20 Degrees C = 2700 to 2900 ohms 40 Degrees C = 1100 to 1300 ohms 60 Degrees C = 500 to 600 ohms 80 Degrees C = 270 to 290 ohms 100 Degrees C = 140 to 160 ohms

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Fuel Pressure Sensor - Fault Code 0190 / 0191 / 1112 / 1138

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Engine Speed Sensor - Fault Code 0335

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Camshaft Position Sensor - Fault Code 0340 / 1614

 EGR Solenoid - Fault Code 0403 / 1402

 Vehicle Speed Sensor - Fault Code 0500

Glow Plug Pre - Post Heater Circuit - Fault Code 0380

3rd Piston Solenoid - Fault Code 1135