Smart Key System (Start Function) (Diagnostic Codes & Circuit Tests) (Except Phv): Other Toyota Prius III

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to DTC CHECK / CLEAR . Turn the power switch on (IG). After 25 seconds have elapsed, check if the DTC has been set again. OK DTC B2275 is not output. NG --> See step 4 OK --> See step 5
4. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
5. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL

1. CHECK FOR DTC Clear the DTC. Refer to DTC CHECK / CLEAR . Turn the power switch on (IG). After 330 seconds have elapsed, check if the DTC has been set again. OK DTC B2277 is not output HINT: If there are any signs that water was present, before replacing the power management control ECU, take measures to prevent any further water entry. NG --> See step 2 OK --> See step 3
2. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
3. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to DTC CHECK / CLEAR . Turn the power switch on (READY). After 25 seconds have elapsed, check if the DTC has been set again. OK DTC B2286 is not output NG --> See step 4 OK --> See step 5
4. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
5. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. CHECK FOR DTC Clear the DTC. Refer to DTC CHECK / CLEAR . Check for DTC again. OK DTC U0293 is not output NG --> See step 4 OK --> See step 5
4. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
5. USE SIMULATION METHOD TO CHECK. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT IG2 RELAY See step 4 NG --> REPLACE IG2 RELAY OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAY) See step 4 NG --> See step 10 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL J/B) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) See step 8 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU See step 9 NG --> See step 11 OK --> See step 12
10. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL
11. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
12. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING

1. CHECK HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
2. CHECK HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step 2 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY See step 3 NG --> See step 7 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL J/B) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) OK: Go to next step
6. INSPECT POWER MANAGEMENT CONTROL ECU See step 6 NG --> See step 8 OK --> See step 9
7. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to REMOVAL
9. USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING