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Keyless Control System Input Tests: Notes

NOTE: For location of system grounds, see COMPONENT LOCATIONS  .
  1. Before testing keyless entry/power door lock system control functions, check driver's underdash fuse/relay box fuse No. 9 (10-amp). Check passenger's underdash fuse/relay box fuses No. 10 (15-amp), 12 (20-amp) and 13 (7.5-amp). Check underhood fuse/relay block fuse No. 47 (20-amp). If any fuse is blown, replace fuse and retest system. If fuse blows again, locate and repair short. See WIRING DIAGRAMS  . If fuses are okay, go to next step.
  2. Check multiplex control system for Diagnostic Trouble Codes (DTCs). See appropriate MULTIPLEX CONTROL SYSTEMS article. If DTC exists, diagnose and repair DTC. If DTC does not exist, check driver's multiplex control unit. See DRIVER'S MULTIPLEX CONTROL UNIT INPUT TEST  .
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