Honda Civic Service Manual: Radiator

Thermostat Housing Removal and Installation (R18Z1)

1141B6 1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

Radiator Connecting Pipe Removal and Installation (K24Z7)

1141E7 1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

See also:

Honda Civic Owners Manual. Emissions Testing
Testing of Readiness Codes Your vehicle has readiness codes as part of the onboard self diagnostic system. Some States use these codes for testing to verify whether your vehicle's emissions components are working properly. The codes may not be read properly if testing is performed just a ...