DTC 66

CIRCUIT DESCRIPTION
This DTC is output when +B or GND short occurs on instrument panel system communication bus. If +B or GND short is detected on instrument panel system communication bus, separate it by bus cut relay in body No.1 ECU and Body No.2 ECU to Prevent while communication buses' failure.

Wiring Diagram:

Step 1:

Steps 2 - 3:

Steps 4 - 5:

Steps 6 - 7:

Steps 8 - 9:

Steps 10 - 11:

Step 12:

INSPECTION PROCEDURE

HINT: On the system structure point of view, this DTC cannot display meter. In case of checking DTC, please use LEXUS hand-held tester.