LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2000 >> 3.5RL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Anti-Theft & Keyless Entry Systems >> System Tests >> Multiplex Control Unit Input >> Anti-Theft System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Anti-Theft System

  1. Remove driver's underdash fuse/relay box. See DRIVER'S UNDERDASH FUSE/RELAY BOX  under REMOVAL & INSTALLATION. Remove driver's multiplex control unit from driver's underdash fuse/relay box. Disconnect control unit connectors. Inspect connectors and terminals. Check for bent, loose, or corroded terminals. Perform driver's multiplex control unit input tests. See Fig 1 . Repair as necessary and recheck system operation. If driver's multiplex control unit inputs are okay, go to next step.
  2. Reconnect driver's multiplex control unit to driver's underdash fuse/relay box. Perform input tests at back of fuse/relay box (backprobe). See Fig 2 . Repair as necessary. If all tests are okay, go to next step.
  3. Remove passenger's multiplex control unit from behind right kick panel. Disconnect control unit connectors. Inspect connectors and terminals. Check for bent, loose or corroded terminals. Perform passenger's multiplex control unit input tests. See Fig 3 . Repair as necessary and recheck system operation. If passenger's multiplex control unit inputs are okay, go to next step.
  4. Reconnect passenger's multiplex control unit. Perform input tests at back of passenger's multiplex control unit connectors (backprobe). See Fig 4 . Repair as necessary. If all tests are okay, go to next step.
  5. Remove driver's door panel. See DOOR PANEL  under REMOVAL & INSTALLATION. Remove driver's door multiplex control unit (built into power window switch). Disconnect control unit connector. Inspect connectors and terminals. Check for bent, loose or corroded terminals. Perform first part of driver's door multiplex control unit input test. See Fig 5 . Repair as necessary and recheck system operation. If driver's door multiplex control unit tests are okay, go to next step.
  6. Reconnect driver's door multiplex control unit connector. Perform second part of driver's door multiplex control unit input test at back of driver's door multiplex control unit connector (backprobe). See Fig 5 . Repair as necessary. If all tests are okay, go to next step.
  7. If all tests have proven okay, power window master switch must be faulty. Replace power window master switch and recheck system operation.
Fig 1: Driver's Multiplex Control Unit, Anti-Theft System Input Test (1 Of 2)
G99H50028Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Driver's Multiplex Control Unit, Anti-Theft System Input Test (2 Of 2)
G99I50029Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: Passenger's Multiplex Control Unit, Anti-Theft System Input Test (1 Of 2)
G99B50030Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 4: Passenger's Multiplex Control Unit, Anti-Theft System Input Test (2 Of 2)
G99D50032Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 5: Driver's Door Multiplex Control Unit, Anti-Theft System Input Tests
G99C50031Courtesy of AMERICAN HONDA MOTOR CO., INC.
scientia non olet · About LEMON Manuals