Example 3:

Using the DTCs stored in the memories, you have determined that none of the control modules are sending or receiving signals.

Fig 1: DTC Memory - None Of The Control Modules Are Sending Or Receiving Signals

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• Switch ignition off.
• Disconnect the control modules connected across the bus wires and check for short circuits between the bus wires.

  See appropriate System Wiring Diagram article.

Fig 2: Schematic - Checking For Short Circuits Between Bus Wires
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• Check the bus wires for short circuit to B+ or Ground (GND).
Fig 3: Schematic - Checking Bus Wires For Short Circuit To B+ Or Ground
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