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SYMPTOM PROCEDURES SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR 54B-209 DIAGNOSTIC PROCEDURE Step 1. Check the diagnosis code. When the ignition switch is turned to the LOCK Q: Is the diagnosis code set? YES : Refer to diagnosis code chart NO : Go to Step 2. Step 2. Pulse check Check the input signal from the tail lamp switch. OK: The MUT-II/III sounds or the voltmeter Q: Is the check result normal? All the signals are received normally. : Go to Step The ignition switch (IG1) signal is not received. : Refer to inspection procedure N-2 "The The tail lamp switch signal is not received. : Refer to inspection procedure N-5 "The column Step 3. Connector check: A-11X front-ECU Q: Is the check result normal? YES : Go to Step 4. NO : Repair the defective connector. Step 4. Measure the voltage at A-11X front-ECU (1) Remove the front-ECU, and measure at the relay box side. (2) Voltage between A-11X front-ECU connector terminal No.7 and body earth OK: System voltage Q: Is the check result normal? YES : Go to Step 6. NO : Go to Step 5. Step 5. Check the wiring harness between A-11X • Check the power supply line for open circuit. Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction NO : Repair the wiring harness. Step 6. Retest the system. Check that the tail lamps illuminate normally. Q: Is the check result normal? YES : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction NO : Replace the front-ECU. System switch Check condition Ignition switch (IG1) When turned from ACC Tail lamp switch When the lighting switch AC301515 AD Connector: A-11X 5 11 9 10 8 7 6 2 4 3 1 Relay box side AC301515 AD Connector: A-11X 5 11 9 10 8 7 6 2 4 3 1 Relay box side AC301541 AD 5 11 9 10 8 7 6 2 4 3 1 Connector A-11X |