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Home >> Acura >> 2003 >> 3.2TL Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Interior/Illumination Lights >> Interior Lights >> Entry Light Control System >> Control Unit Input Test

Control Unit Input Test

  1. Before testing the entry light control functions, troubleshoot the multiplex control system (see MULTIPLEX CONTROL SYSTEMS article).

    Multiplex Control Unit, Driver's: 

  2. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
  3. 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 4.
    Fig 1: Identifying Fuse/Relay Box Socket Terminals
    G01156900Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 2: Identifying Driver's Under-Dash Fuse/Relay Box Connector A Terminals
    G01156901Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 3: Identifying Driver's Under-Dash Fuse/Relay Box Connector O Terminals
    G01156902Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. With the driver's multiplex control unit still disconnected, make these input tests at the connector or driver's under-dash fuse/relay box socket.
    • 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 5.
    Fig 4: Driver's Multiplex Control Unit Input Tests (Disconnected)
    G01156903Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Reconnect the driver's multiplex control unit to the driver's under-dash fuse/relay box, and perform the following input tests at the appropriate connectors on the back of the driver's 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 5: Driver's Multiplex Control Unit Input Tests (Connected)
    G01156904Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Multiplex Control Unit, Passenger's: 

  6. Remove the passenger's multiplex control unit from the passenger's under-dash fuse/relay box, and disconnect its connector.
  7. 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 8.
    Fig 6: Identifying Fuse/Relay Box Socket Terminals
    G01156905Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 7: Identifying Passenger's Under-Dash Fuse/Relay Box Connector A Terminals
    G01156906Courtesy of AMERICAN HONDA MOTOR CO., INC.
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