Smart Key System (Keyless Start) (Diagnostic Codes & Symptom Tests): Other Toyota 4Runner V

PROCEDURE

1. CHECK FOR TRACES OF WATER Check the power management control ECU, peripheral components and wire harnesses for traces of water. RESULT Result Proceed to There are traces of water A There are no traces of water B B --> See step 2 A --> TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER MANAGEMENT CONTROL ECU
2. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(ref-422214-S01527191172011092600000)

1. CHECK FOR DTC Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-422135-S34231058172011092600000) . Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422135-S34231058172011092600000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422135-S34231058172011092600000) . RESULT Result Proceed to DTC is not output A DTC is output B B --> See step 3 A --> See step 2
2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-421949-S30781788442011092600000)
3. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-422172-S35406285762011092600000)

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 OK: Go to next step
3. INSPECT NO. 1 INTEGRATION RELAY (IG2 RELAY) See step 3 NG --> REPLACE NO. 1 INTEGRATION RELAY OK: Go to next step
4. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAYS) See step 4 NG --> REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) See step 5 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 INTEGRATION RELAY) See step 7 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - BODY GROUND) See step 8 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK POWER MANAGEMENT CONTROL ECU See step 9 NG --> See step 11 OK: Go to next step
10. CONFIRM TEST See step 6 NG --> CHECK RELAY CONTACT SIDE CIRCUIT OK --> See step 12
11. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(ref-422214-S01527191172011092600000)
12. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-421949-S30781788442011092600000)

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step 1 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 OK: Go to next step
3. INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY) See step 3 NG --> REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) See step 4 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK POWER MANAGEMENT CONTROL ECU See step 6 NG --> See step 8 OK: Go to next step
7. CONFIRMATION TEST See step 6 NG --> CHECK RELAY CONTACT SIDE CIRCUIT OK --> See step 9
8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(ref-422214-S01527191172011092600000)
9. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-421949-S30781788442011092600000)