How To Proceed With Troubleshooting

1NZ-FXE STARTING: SMART KEY SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use this procedure to troubleshoot the smart key system.
- *: Use Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.

2. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*
(a) Use Techstream to check if Multiplex Communication System (MPX) is functioning normally.

Result





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

3. CHECK FOR DTC*
(a) Check for DTC and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.

Result





B -- Go to step 6
A -- Continue to next step.

4. PROBLEM SYMPTOMS TABLE

Result





B -- Go to step 6
A -- Continue to next step.

5. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) DATA LIST / ACTIVE TEST Scan Tool Testing and Procedures
(1) Inspection with Techstream (DATA LIST)
(2) Inspection with Techstream (ACTIVE TEST)
(b) On-vehicle Inspection Component Tests and General Diagnostics
(c) Terminal of ECU Pinout Values and Diagnostic Parameters
NEXT -- Continue to next step.

6. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.

7. CONFIRMATION TEST
NEXT -- END