DTC 2-4

CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: 2-3: Digital Signal Processor Communication Error

DTC 2-3 - Digital Signal Processor Communication Error

DTC 2-4 - GPS Communication Error

DESCRIPTION

These DTCs are output when a communication error occurs between the CPU and each interface in the mayday ECU assembly.










INSPECTION PROCEDURE

PROCEDURE

1. RESET MAYDAY ECU ASSEMBLY
(a) Exit diagnosis mode and wait for 10 seconds.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for 10 minutes.
(c) Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
(d) Turn the ignition switch ON, and then check for the current DTC again.
Result:





NOTE:
If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU Programming and Relearning.

B -- CLEAR HISTORIC DTC
A -- REPLACE MAYDAY ECU ASSEMBLY