Home » ISX11.9 CM2250 - Service Manual » Cummins ISX11.9 CM2250 – Service Manual 019-043   Engine Wiring Harness

Cummins ISX11.9 CM2250 – Service Manual 019-043   Engine Wiring Harness

Table of Contents

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TOC

Replace the engine harness if there is an open or short circuit found under the protective covering of the harness body.

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Disconnect the coolant temperature sensor.

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Disconnect the EGR differential pressure sensor.

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Disconnect the EGR temperature sensor (1), the compressor intake temperature sensor (2), and the EGR orifice pressure sensor (3) from the engine wiring harness.

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Remove the two wiring harness retaining clips from the EGR system bracket (1) and the EGR mass measurement flow assembly (2).

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Remove the turbocharger actuator electrical connector.

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Disconnect the aftertreatment fuel injector electrical connector.

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Remove the wiring harness retaining clip from the EGR system bracket.

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Remove the EGR valve electrical connector.

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Disconnect the exhaust gas pressure sensor.

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Disconnect the turbocharger speed sensor.

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Disconnect the aftertreatment intake NOx sensor electrical connector.

Remove the two wiring harness retaining clips from the engine block.

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Disconnect the crankshaft position sensor.

Remove the wiring harness retaining clip from the camshaft gear cover plate.

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Remove the wiring harness retaining clip from the cylinder head.

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Disconnect the crankcase pressure sensor.

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Disconnect the injector pass-through connector.

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Disconnect the fuel pump actuator electrical connector.

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Disconnect the aftertreatment purge air actuator from the engine harness.

Remove the wiring harness retaining clip from the aftertreatment doser air purge actuator body.

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Disconnect the aftertreatment fuel pressure sensor (1) and the aftertreatment fuel shutoff valve (2) from the engine wiring harness.

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Disconnect the intake manifold pressure/temperature sensor.

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Disconnect the fuel rail pressure sensor.

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Disconnect the oil temperature sensor (1) and the oil pressure sensor (2).

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If equipped, disconnect the fuel lift pump electrical connector.

 
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Disconnect the camshaft position sensor.

 
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Disconnect the ECM 60-pin engine connector 1 (1) and the ECM 60-pin engine connector 2 (2).

Disconnect the 14-pin OEM crossover connector (3).

Disconnect the 2-pin relay power connector (4).

Remove the wiring harness.

 
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Last Modified:  12-Jul-2010