Engine Control Module -J623-, REMOVING AND INSTALLING, WITH PROTECTIVE HOUSING: Removing

-- Switch on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

• 01 - Motor electronics 
• Guided Functions 
• 01 - Replacing the Engine Control Module 

-- Turn off the ignition and remove the ignition key.

-- Disconnect the battery before taking the engine control module out of its holder. Refer to Battery, Disconnecting and Connecting .

Remove the shear bolts -arrows- as follows to remove the protective housing -1- :

Fig 1: Identifying Protective Housing Bolts

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-- Make a slot for a screwdriver in the shear bolt head -1- using a mini-grinder -2-.

Fig 2: Identifying Mini-Grinder

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Hot Air Blower 4 Settings 

Fig 3: Identifying Controls For Heat Gun

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-- Set the temperature setting potentiometer -2- to the maximum heating output.

-- Set the two stage switch for airflow -3- to position 3.

-- Warm up the shear bolt head -1- for approximately 20 to 30 seconds.

Fig 4: Identifying Hot Air Blower

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-- Remove the shear bolt -1- using the screwdriver -2-.

Fig 5: Removing Bolt

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-- Remove the protective housing from the Engine Control Module -J623-.

-- Release the Engine Control Module -J623- in the direction of the -arrow A-.

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-- Pivot out the Engine Control Module -J623- in the direction of the -arrow B- and remove it from the bracket.

-- Release and remove the connectors for the Engine Control Module -J623-.