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Test 1: Ecu Power Source Circuit

  1. DOME Fuse Check  - Turn ignition switch to OFF position. Ensure DOME fuse is okay. See Figure. Replace fuse if necessary. If DOME fuse is okay, go to next step. If fuse fails again, check for short in Red wire between DOME fuse and wireless door lock control ECU terminal No. 8. See WIRING DIAGRAMS .
  2. ECU Power Source & Ground Test  - With ignition switch in OFF position, remove luggage compartment left side panel. Remove wireless door lock ECU. Measure voltage between ECU connector terminals No. 8 (Red wire) and No. 1 (White/Black wire). See Figure. If battery voltage does not exist, check for an open in Red or White/Black wire. If 10-14 volts exist, proceed to next test given in TROUBLE SHOOTING SYMPTOMS  table.
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