Example 2:

From the DTCs stored in the memories, you have determined that control module 2 is not communicating with control modules 1 and 3.

Fig 1: Checking Two-Line Bus System - Control Module 2 Is Not Communicating With Control Modules 1 And 3

Fig 2: DTC Memories Table - Control Module 2 Is Not Communicating With Control Modules 1 And 3, Example 2

• Switch ignition off.
• Disconnect the control modules connected across the bus lines and check the bus lines for an open circuit.
• If you cannot find a malfunction in the bus lines, replace control module 2.