Electric Drive Control Module On Front Axle J1234, Removing And Installing: Removing

If the Electric Drive Control Module on Front Axle -J1234- is replaced, the test plan for replacing the control module must be performed.

-- Perform the "Control Module, Replacing" function using the Vehicle Diagnostic Tester . Refer to Diagnostic Entries .

Continuation

CAUTION:

High voltage increases the risk of fatal injury

Electrocution can cause severe bodily or fatal injury.

- Have a high-voltage technician or a high-voltage expert de-energize the high-voltage system.

-- Refer to High-Voltage System, De-Energizing .

-- Remove the plenum chamber bulkhead. Refer to PLENUM CHAMBER BULKHEAD, REMOVING AND INSTALLING .

-- Remove the front underbody trim panel. Refer to OVERVIEW - UNDERBODY TRIM PANELS .

S model

-- Remove the nut -3-.

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-- Remove the bolt -1-.

-- Move the coolant pipes to the side slightly.

Continuation for all vehicles

-- Remove the screws -arrows-.

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-- Disconnect the connector -1-.

-- Install the noise insulation on the motor.

Vehicles with protective housing

-- Remove the screws -arrows-.

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-- Remove the protective housing -1-.

Continuation for all vehicles

CAUTION:

High voltage increases the risk of fatal injury

Electrocution can cause severe bodily or fatal injury.

- Have a high-voltage technician or a high-voltage expert de-energize the high-voltage system.

-- If the contact protection is remove from on high-voltage components, an additional de-energizing must be performed.

-- Remove the bolts in the sequence -6- through -1- and remove the cover.

Fig 1: Bolts for High-Voltage Cable Cover - Tightening Specification and Sequence

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-- Perform an additional de-energizing.

-- Remove the screws -arrows-.

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-- Remove the cover -1- rearward -arrows-.

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CAUTION:

The cooling system can be under pressure. Risk of scalding by hot steam and hot coolant.

Possibility of scalding the skin and other parts of the body.

- Wear safety gloves.

- Wear protective eyewear.

- Reduce the pressure: cover the coolant expansion tank cap with a suitable towel and carefully open.

-- Cut the seal loop -1-.

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-- To remove the residual pressure in the cooling system, quickly open the cap -3-.

-- Clamp off the coolant hoses using the Hose Clamps - Up To 25mm:3094 .

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-- Place a cleaning cloth underneath, to catch cleaning coolant leaking out.

-- Loosen the hose clamps -1- and -2- and remove the coolant hoses (example photo).

-- Place the Shop Crane - Drip Tray:VAS 6208 underneath.

Fig 2: Electric Drive Control Module on Front AxleJ1234 - Tightening Specification and Sequence

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-- Disconnect the connector -arrow-.

-- Remove the bolts in sequence -4- through -1-.

-- Remove the Electric Drive Control Module on Front Axle -J1234- (example illustration).