DTC U0100[00] Lost Communication With ECM (Wireless Access Module (Mid-version/Lo-version [Except Passive Entry and Start System]))

1. DTC U0100[00] description

The wireless access module and ECM communicate the control information and diagnosis information via the CAN communication circuit. The wireless access module monitors the CAN operational status by expecting a constant message flow from the ECM. If the wireless access module fails to receive messages from the ECM, the DTC is set.

2. Condition for setting DTC U0100[00]

Condition for running the DTC

  • The ignition switch is ON.

Condition for setting the DTC

  • The wireless access module detects that CAN Bus messages from the ECM are not received for 5 seconds.
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