Undoing The Wire Harness In The Left Side Of Engine Compartment

→ The main wire harness contains all airbag lines, antenna lines and optical waveguides.

→ The main wire harness must not be separated and is always replaced as a complete wire harness when carrying out extensive repairs.

→ If individual lines are damaged, shut off these lines and install new lines. Lay the new lines along the main wire harness and secure them to the main wire harness.

Fig 1: Identifying Engine Compartment Wire Harness Installation Position (Left Side)

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1. Plug connection for left engine mount
2. Plug connection for oxygen sensor downstream of left catalytic converter
3. Plug connection for rear apron wire harness
4. Plug connection for left tail light
5. Plug connection for oxygen sensor upstream of left catalytic converter
6. Plug connection for rear left ABS wire harness

1. Disconnect plug connection for rear apron.
   Fig 2: Disconnecting Plug Connection For Rear Apron

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   1. 1.1. Unlatch the plug connection -a-  and pull it off -B-  .
   2. 1.2. Unlatch the plug connection from the bracket -C-  and remove it -D-  .
2. Disconnect engine mount plug connection.
   Fig 3: Disconnecting Engine Mount Plug Connection

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   1. 2.1. Unlatch the plug connection -a-  and pull it off -B-  .
3. Disconnect oxygen sensor connectors in engine compartment.
   1. 3.1. Unlatch and pull off green plug connection (upstream of catalytic converter). → 246919 REMOVING AND INSTALLING OXYGEN SENSOR UPSTREAM OF CATALYTIC CONVERTER
   2. 3.2. Unlatch and pull off grey plug connection (downstream of catalytic converter). → 247319 REMOVING AND INSTALLING OXYGEN SENSOR DOWNSTREAM OF CATALYTIC CONVERTER
4. Remove holder for engine compartment wire harness.
   Fig 4: Removing Holder For Engine Compartment Wire Harness

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   1. 4.1. Unscrew M6 fastening screw -1-  .
   2. 4.2. Put the holder to one side -arrow-  .
5. Guide out tail light connector.
   Fig 5: Guiding Out Tail Light Connector

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   1. 5.1. Remove the rubber sleeve -A-  by squeezing it out of the body aperture.
   2. 5.2. Pull the connector for the left tail light into the engine compartment -B-  .
6. Guide out the sub-part of the wire harness for the rear left wheel housing.
   1. 6.1. Disconnect the electric plug connection of the connection point to the rear left ABS wire harness. → 976519 REMOVING AND INSTALLING WIRE HARNESS FOR ANTI-LOCK BRAKE SYSTEM (ABS) 
   2. 6.2. Pull the ABS wire harness connector into the engine compartment.
7. Undo wire harness mounting.
   Fig 6: Removing Wire Harness Mounting

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   1. 7.1. Release the rubber sleeve by squeezing it -A-  out of the body and pull it a little way into the engine compartment -B-  .
   2. 7.2. Unclip fixing clips -1-  (-C-  ).
   3. 7.3. Check the fixing clips and replace if necessary.