4. If a complaint of intermittent operation can be verified, the transmitter is faulty. 5. If a complaint of intermittent operation cannot be verified, check for intermittent sticking of the unlock warning switch using the following method: a. Insert key in ignition. b. Turn ignition switch from lock to accessory and back to lock. c. Remove key. d. Check remote lock/unlock operation. e. Repeat steps “a” – “d” at least 10 times. If remote becomes inoperative during step “d”, unlock detection switch or ignition key cylinder is faulty.
WIRELESS DOOR LOCK SERVICE INFORMATION AND DIAGNOSIS Page 8 of 13 PROCEDURE C – WIRELESS INOPERATIVE AT SPECIFIC LOCATIONS: This procedure is used to check for the presence of electrical interference at specific locations that may interfere with wireless transmitter/receiver operation. This test is used only to verify the presence of electrical interference at a specific location and does not lead to a repair. IMPORTANT: Verify that the wireless door lock control system operation is normal in non–compliant areas . If the system is inoperative at all locations, do not continue with this procedure, refer to Procedure A – Wireless Inoperative At All Times. Perform the following procedure in the area where the problem is occurring: 1. Enter the diagnostic mode: a. Open the driver’s door. b. Lock all doors using the interior power door lock switch. c. Insert key in ignition once and remove. d. Cycle the door locks (unlock and lock = 1 cycle) using the interior power door lock switch 10 times as shown below (if door locks are cycled too slow or too fast, diagnostic mode will not be initiated). 2. Door locks should cycle (unlock/lock) one time automatically to confirm that diagnostic mode has been entered. If door locks do not cycle, repeat Step 1. 3. Within the next 10 seconds, count the number of door lock (unlock/lock) cycles and refer to the chart below: DOOR LOCK CYCLES DIAGNOSIS 0 No interference at this time 1 or 2 Outside electrical interference
WIRELESS DOOR LOCK SERVICE INFORMATION AND DIAGNOSIS Page 9 of 13 BATTERY CAPACITY CHECK PROCEDURE: The lithium battery used in the transmitter will measure a voltage of 2.5 volts or more until the battery capacity is fully consumed. To accurately determine the remaining battery capacity, a load must be applied. NOTE : Make all battery checks at room temperature (low temperatures may adversely affect output). 1. Key Type Transmitters: Remove screw, pry cover up slightly, and push cover away from portion of the key. Fob Type Transmitters: Insert a screwdriver and twist to remove cover. 2. Inspect the battery terminals, transmitter case, and cover for corrosion or visible damage. Replace transmitter if necessary. 3. Depress the transmitter button for 1 second and then release for 1 second. Repeat this process 5 times.
WIRELESS DOOR LOCK SERVICE INFORMATION AND DIAGNOSIS Page 10 of 13 BATTERY CAPACITY CHECK PROCEDURE (Cont’d): 4. Connect the positive (+) lead from the tester to the transmitter battery (+) and the negative (–) lead as shown.
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