Smart Key System (Start Function) (Diagnostic Codes & Symptom Tests) (Except Hybrid): Other Toyota Avalon XX40

PROCEDURE

1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-551677-S34243316752013051500000) . Turn the engine switch on (IG). After 330 seconds have elapsed, check for DTCs. HINT: If there are any signs that water was present, before replacing the certification ECU (smart key ECU assembly), take measures to prevent any further water entry. OK DTC B2277 is not output. NG --> See step 2 OK --> See step 3
2. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-551870-S09131890672013051500000)
3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-551669-S19665230182013051500000)

1. CHECK FOR DTC Note any DTCs that are output. Refer to «DTC CHECK / CLEAR»(ref-551677-S34243316752013051500000) . NEXT --> See step 2
2. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-551853-S22702238422013051500000)

1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) See step 3 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY See step 4 NG --> See step 4 OK: Go to next step
3. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See step 5 NG --> See step 5 OK --> CHECK RELAY CONTACT SIDE CIRCUIT
4. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «COMPONENTS»(ref-551868-S03413796212013051500000)
5. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-551870-S09131890672013051500000)