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Wireless Door Lock Control Receiver Circuit

  1. Disconnect 5-pin wireless door lock control receiver harness connector. Measure continuity between ground and terminal No. 1 (White/Black wire) at wireless door lock control receiver harness connector. See Figure. If continuity exists, go to next step. If continuity does not exist, repair open in White/Black wire between wireless door lock control receiver and ground.
  2. Measure voltage between ground and terminal No. 5 (Red wire) at 5-pin wireless door lock control receiver harness connector. If battery voltage exists, go to next step. If battery voltage does not exist, check for open/short in Red wire between wireless door lock control receiver harness connector terminal No. 5 and MPX-B (7.5-amp) fuse. See WIRING DIAGRAMS . Repair as necessary. If circuit is okay, check for blown MPX-B (7.5-amp) fuse in center junction block. See Figure. Replace as necessary and retest system. If fuse is okay, check for open circuit between MPX-B (7.5-amp) fuse and battery.
  3. Reconnect 5-pin wireless door lock control receiver harness connector. Measure voltage by backprobing terminal No. 3 (Red/Black wire) at 5-pin wireless door lock control receiver harness connector. See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Red/Black wire between 5-pin wireless door lock control receiver harness connector terminal No. 3 and body control ECU harness connector terminal B7-9. See Figure.
  4. Measure voltage by backprobing terminal No. 2 (Purple wire) at 5-pin wireless door lock control receiver harness connector. Turn ignition off, remove key from ignition and depress transmitter button while observing voltage. If voltage reading is between 6-7 volts, replace wireless door lock control receiver. If voltage is not as specified, repair faulty circuit in Purple wire between 5-pin wireless door lock control receiver harness connector terminal No. 3 and body control ECU harness connector terminal B7-9. See WIRING DIAGRAMS .
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