Control Unit Input Test

NOTE: For the hatch glass unlock button test, refer to the rear window wiper control unit input test (see REAR WINDOW WIPER CONTROL UNIT INPUT TEST ).

Before testing, troubleshoot the multiplex control system (see TROUBLESHOOTING .
Remove the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
Disconnect the under-dash fuse/relay box connectors.
NOTE: All connectors are wire side of female terminals.

Fig 1: Disconnecting Under-Dash Fuse/Relay Box Connectors
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 5.
Reconnect all connections to the under-dash fuse/relay box, and make these input tests at the appropriate connectors on the under-dash fuse/relay box.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 6.
  
  Fig 2: Control Unit Input Test
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the connectors, and make these input tests at the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the multiplex control unit must be faulty, replace the under-dash fuse/relay box assembly.
  
  Fig 3: Control Unit Input Test
  Courtesy of AMERICAN HONDA MOTOR CO., INC.