Check Communication Function

CHECK COMMUNICATION FUNCTION

a. Check the battery voltage.
Standard: 10 to 14 V

b. Inspect the DTC output.
1. Check a DTC concerning the multiplex network body ECU by connecting the hand-held tester to the DLC3 and turning the ignition switch ON.

HINT:
- When DTC check is impossible, check the following items.
- The display shows communication error (refer to new diagnosis system and the operations when an error occurred).

2. When the display shows DTCs concerning the ECU unconnected and the communication bus defective, perform the inspection depending on the troubleshooting procedures.

HINT: When another DTC is output, refer to the DTC table and check the applicable section.