FixVault
Home › Acura › 2004 › TL Automatic › Repair and Diagnosis (Single Page) › Accessories & Equipment › Communication Devices › Multiplex Integrated Control System › Combination Switch Control Unit Input Test

Combination Switch Control Unit Input Test

  1. Remove the steering column covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
  2. Disconnect the 8P connector from the wiper/washer switch.
    Fig 1: Identifying 8P Wiper/Washer Switch Connector Terminals
    G03662050Courtesy of AMERICAN HONDA MOTOR CO., INC.
  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.
  4. Reconnect the connector, and make these input tests at the connector.
    • 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.
    COMBINATION SWITCH CONTROL UNIT INPUT TEST - REFERENCE DATA

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    3 BLK Under all conditions Check for voltage to ground:
    There should be less than 1 V.
    • Poor ground (G503, G601)
    • An open in the wire
    8 WHT/RED Under all conditions Check for voltage to ground:
    There should be battery voltage.
    • Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
    • An open in the wire
    7 YEL Ignition switch ON (II) Check for voltage to ground:
    There should be battery voltage.
    • Blown No. 21 (7.5 A) fuse in the under-dash fuse/relay box
    • An open in the wire
  5. Disconnect the connector from the wiper/washer switch, and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the combination switch control unit must be faulty, replace the wiper/washer switch.
COMBINATION SWITCH CONTROL UNIT INPUT TEST - REFERENCE DATA

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
4 LT GRN Under all conditions Check for continuity between No. 4 terminal and the under-dash fuse/relay box connector X (39P) No. 27 terminal:
There should be continuity.		 An open in the wire
About FixVault