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Control Unit Input Test

WARNING: This page is about a different variant/trim than selected.
  1. Before testing, troubleshoot the multiplex control system (see TROUBLESHOOTING ).
  2. Remove the driver's dashboard lower cover (see INTERIOR TRIM - HATCHBACK ).
  3. Disconnect the under-dash fuse/relay box connectors B, G, J, X and Y.
    NOTE: All connectors are wire side of female terminals.
    Fig 1: Identifying Under-Dash Fuse/Relay Box Connector Terminals
    G01400890Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. 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 are OK, go to step 5.
  5. Reconnect the connectors, and make these input tests at the connector. See Fig 2 .
    • 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 2: Control Unit Input Tests
    G01400891Courtesy of AMERICAN HONDA MOTOR CO., INC.
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