Example 1
Based on the DTCs entered in the DTC memories, it can be seen that control module 1 is not connected to control modules 2 and 3.
- Switch ignition OFF.
- Disconnect control modules connected by bus circuit and check whether a bus wiring connection has an open circuit. See appropriate System Wiring Diagrams article.
- If no malfunction is found in bus wiring, replace control module 1.