DTC 2-3: Digital Signal Processor Communication Error; DTC 2-4: GPS Communication Error: Procedure

1. Exit diagnosis mode and wait for 10 seconds.
2. Disconnect the cable from the negative (-) battery terminal, and wait for 10 minutes.
3. Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
4. Turn the ignition switch ON, and then check for the current DTC again.

   Result

   Result	Proceed to
   Current DTC 2-3 or 2-4 exists	A
   Historic DTC 2-3 or 2-4 exists	B

   NOTE:

   If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU. Refer to REGISTRATION .

B → CLEAR HISTORIC DTC 

A → See step   2