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Driver's Unit

  1. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box, and disconnect its connector.
  2. Inspect all 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 3.
      Fig 1: Identifying Driver's Under-Dash Fuse/Relay Box Socket
      G03642418Courtesy of AMERICAN HONDA MOTOR CO., INC.
      Fig 2: Identifying Driver's Multiplex Control Unit Connector B
      G03642419Courtesy of AMERICAN HONDA MOTOR CO., INC.
      Fig 3: Identifying Driver's Under-Dash Fuse/Relay Box Connector E
      G03642420Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. With the driver's multiplex control unit still disconnected, 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, go to step 4.
      CONTROL UNIT INPUT TEST (DRIVER'S UNIT - 1 OF 2)

      Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
      A14 Fuse/relay box socket Under all conditions Check for continuity to ground:
      There should be continuity.
      • Poor ground (G401)
      • Faulty driver's fuse/relay box
      • An open in the wire
      B11 BLK Under all conditions Check for continuity to ground:
      There should be continuity.
      • Poor ground (G501)
      • An open in the wire
      A24 Fuse/relay box socket Ignition switch ON (II) Check for voltage to ground:
      There should be battery voltage.
      • Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box
      • Faulty driver's fuse/relay box
      A12 Fuse/relay box socket Under all conditions Check for voltage to ground:
      There should be battery voltage.
      • Blown No. 54 (40 A) fuse in the under-hood fuse/relay box
      • Blown No. 13 (7.5 A) fuse in the passenger's under-dash fuse/relay box
      • An open in the wire
      A3 Fuse/relay box socket Shift lever in P position Check for continuity to ground:
      There should be continuity.
      • Poor ground (G101, G102)
      • Faulty transmission range switch
      • Faulty driver's fuse/relay box
      • An open in the wire
      B14 BLU/WHT Under all conditions Check for continuity between the B14 terminal and the PCM 56P connector B terminal No. 26 (1) (disconnected):
      There should be continuity.      		 An open in the wire
      Check for continuity between the B14 terminal and body ground:
      There should be no continuity.      		 Short in the wire
      (1) For PCM connector terminal locations (see PCM INPUTS AND OUTPUTS AT CONNECTOR A ).
  4. Reconnect the driver's multiplex control unit to the driver's under-dash fuse/relay box, turn the ignition switch ON (II) to keep the system awake, and make these input tests at the appropriate connectors on 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 1 in PASSENGER'S UNIT  .
      CONTROL UNIT INPUT TEST (DRIVER'S UNIT - 2 OF 2)

      Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
      E3 GRN/ORN Driver's door open Check for voltage to ground:
      There should be less than 1 V.
      • Faulty driver's door switch
      • An open in the wire
      Driver's door closed Check for voltage to ground:
      There should be 5 V or more.
      • Faulty driver's door switch
      • Short to ground in the wire
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