Wiring Harness: Service Precautions

Engine Wiring Harness Application Information and Safety Precautions

Eliminate the cause of damage to the wiring harness such as sharp body components, faulty electrical components or corrosion before repairing the wiring.

- Note the following when performing assembly work on the engine wiring harness:


• Always follow the instructions regarding disconnecting and connecting the battery. Refer to => [ Battery, Disconnecting and Connecting ] Battery, Disconnecting and Connecting.

• If a glow plug wire or connector is damaged, the entire wiring harness including the connector must be replaced. Connectors cannot be replaced separately.


• Follow all Safety Precautions when working on the diesel direct fuel injection system.

• Follow the guidelines for clean working conditions.

Always follow these instructions before and while working.


Follow the guidelines below during all assembly work and especially when working in the engine compartment due to the restricted space:

• Route all lines and electrical wiring in their original locations.

• Make sure there is sufficient clearance to all moving or hot components.