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TROUBLESHOOTING <OSS-ECU> KEYLESS OPERATION SYSTEM (KOS) 42B-61 STEP 3. Check of short to power supply, short to NOTE: Before the wiring harness check, check the Q: Is the check result normal? YES : Go to Step 4. NO : Repair the connector(s) or wiring harness. STEP 4. Check whether the diagnosis code is Q: Is the diagnosis code set? YES : Replace the OSS-ECU and register the ). NO : Intermittent malfunction is suspected (Refer − How to Use Troubleshooting/Inspection Service Points − How to Cope with Intermittent Malfunction ). Code No.B1135 Engine switch CAUTION When replacing the ECU, always check that the DIAGNOSTIC FUNCTION When an abnormality is detected for 3 seconds or JUDGEMENT CRITERIA Check Conditions • After OSS-ECU activation Judgment Criterion • 3 seconds or more have elapsed since the unmatch between the SW1 and SW2 of engine PROBABLE CAUSES • Engine switch malfunction (ON/OFF seizure of SW1 or SW2) • Damaged wiring harness or connector (short to power supply, short to earth, or open circuit in • Malfunction of OSS-ECU DIAGNOSIS PROCEDURE STEP 1. Engine switch check Q: Is the check result normal? YES : Go to Step 2. NO : Replace the engine switch. STEP 2. M.U.T.-III data list • Operation Item No. Check item Displ When the 1 Engine switch(1) ON 2 Engine switch(2) ON When the 1 Engine switch(1) OFF 2 Engine switch(2) OFF Operate the engine switch. OK: Operation state and data list display Q: Is the check result normal? Normal conditions are displayed for all the items. : Go to Step 5. Normal condition is not displayed for item No.1 : Go to Step 3. Normal condition is not displayed for item No. 2. : Go to Step 4. STEP 3. Check of short to power supply, short to Q: Is the check result normal? YES : Go to Step 5. NO : Repair the connector(s) or wiring harness. |