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Inverter System Controller [SOBDMC]: Removal

NOTE: Be sure to keep all fluid and debris away from any open ISC (inverter system controller) connections, or disassembled/ open transmission components. Failure to do this will damage the part.

NOTE: This step is only necessary when installing a new component.

Download the module information to the diagnostic tool using the Programmable Modules Installation routine. Use the General Equipment: Ford Diagnostic Equipment
Disable the vehicle high-voltage electrical system.
Drain the engine cooling system. Refer to: Engine Cooling System Draining, Vacuum Filling and Bleeding .
Drain the Electric Powertrain Cooling System. Refer to: Cooling System Filling and Bleeding .
Remove the air cleaner outlet pipe. Refer to: Air Cleaner Outlet Pipe .
Remove the air cleaner. Refer to: Air Cleaner .
Remove the intake manifold. Refer to: Intake Manifold .
Disconnect the electrical connectors.

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Remove the bolt and position aside the transducer.

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Remove the nut and fuel hose bracket.

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Disconnect the engine coolant hoses.

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Remove the EGR bracket bolt.

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- Remove the EGR cooler inlet tube bolts.
- Remove and discard the EGR cooler inlet tube gasket.
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Remove the bolts and the EGR valve assembly.

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Remove and discard the EGR cooler O-ring.

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NOTE: Place absorbent towels under radiator hose to prevent coolant from contacting the ISC.

Disconnect the radiator hose.

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Remove the bolts and the air cleaner bracket.

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NOTE: Place tape over the connectors on the ISC to prevent contaminating the connector pins.

Disconnect the ISC electrical connectors.

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Remove the bolts and the air cleaner bracket.

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NOTE: Place absorbent towels under the coolant connections to prevent coolant from contacting the ISC.

Disconnect the coolant tubes.

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Remove the bolts and position aside the coolant tube.

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Disconnect the wiring harness retainer.

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NOTE: Place absorbent towels under the coolant connection to prevent coolant from contacting the ISC.

Disconnect the coolant tube.

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NOTE: Place tape over the connectors on the ISC to prevent contaminating the connector pins.

Remove the retainer and disconnect the high-voltage cable from the ISC.

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NOTE: When removing side cover, pull cover straight out approximately 2 inches before moving upwards or damage to the high voltage interlock connector may occur.

NOTE: Place ISC side cover on a clean surface with high voltage connector facing upwards or damage to the connector may occur.

Remove and discard the bolts and remove the ISC side cover.

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Remove the high voltage terminal bolts.

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NOTE: If the ISC is being reinstalled, place the ISC on a clean surface, transmission side down. It is important to keep all debris and fluid away from the open ISC or damage to the ISC may occur.

NOTE: Note the location of the studbolts for assembly.

NOTE: Cover all coolant ports to avoid spilling coolant remaining inside the ISC. If the ISC is being replaced, plug the coolant ports with the caps included with the replacement ISC.

Remove the bolts, studbolts and the ISC.

GFD475117

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