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TROUBLESHOOTING SMART WIRING SYSTEM (SWS) USING SWS MONITOR 54C-4 TROUBLESHOOTING PRIOR TO TROUBLESHOOTING M1549014700798 Before carrying out troubleshooting, check the fol- • Make sure that the ETACS-ECU and the junction block (J/B) are connected securely. • Check that the system fuses and fusible links are not burned out. STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING M1549000500984 1. Gather information about the problem from the customer. 2. Verify that the condition described by the customer exists. 3. Confirming version number and destination Check whether the SWS version number (0) and 4. ECU check by using the SWS monitor Check whether the communication status of the • If "OK " is displayed for all related ECUs, they communicate with each other normally and the • If "NG" is displayed for any of the related ECUs, something may be wrong with the ECU for which AC211883 OK OK OK NG NG NG AB 1. 2. 3. Check that the ETACS-ECU is applicable for the vehicle specifications. If the ECU is not applicable for them, replace it with correct one. Check the power supply circuit for the ECU communication lines and repair if necessary. 4. 5. 7. 6. Gather information about the problem Verify that the condition described ECU check on the SWS monitor Confirming version number and destination Check the data list by using the SWS monitor. Check of output signal circuit system Check of input signal circuit system Main Index Group TOC |