How To Proceed With Troubleshooting

DOOR LOCK: SMART KEY SYSTEM:

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:
- Use these procedures to troubleshoot the smart key system.

- *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*
(a) Use the Techstream to check if the multiplex communication system (MPX) is functioning normally.

Result





B -- Go to MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
4. PROBLEM SYMPTOMS TABLE
(a) Refer to the problem symptoms table (Problem Symptoms Table).

Result:





B -- Go to step 6
A -- Continue to next step.
5. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) On-vehicle inspection (Door Lock - Smart Key System)

(b) DATA LIST/ACTIVE TEST (Smart Key System)

(c) Terminals of ECU (Door Lock - Smart Key System)

NEXT -- Continue to next step.
6. REPAIR OR REPLACE
NEXT -- END