Honda Civic Service Manual: Battery System

Electrical

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Battery Removal and Installation

Removal 1. Battery Terminal - Disconnection 1. Make sure the ignition switch is in LOCK (0). ...

See also:

Honda Civic Service Manual. Fuel Pump/Fuel Gauge Sending Unit Removal and Installation (R18Z1)
Removal 1. Fuel Filler Cap 1. Remove the fuel fill cap to relieve the pressure in the fuel tank. 2. HDS DLC - Connection NOTE: ...