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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC U2300:54/U2300:55/U2300:56/U2300:64 [AUDIO AMPLIFIER]

Description	U2300:54 Configuration error (data not received) U2300:55 Configuration error (not configured) U2300:56 Configuration error (ineffective/non-interchangeable data read) U2300:64 Configuration error (error value read)
Detection condition	Audio amplifier detects configuration data not record or data error
Fail-safe	Not applicable
Possible cause	NOTE: To correctly write the configuration data sent from the instrument cluster to the audio amplifier to the audio amplifier, 30 s or more need to have elapsed since the ignition was switched ON (engine off or on). Instrument cluster configuration is not completed. Module configuration procedure was not completed properly Correct data cannot be received from instrument cluster Instrument cluster malfunction Audio amplifier malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY INSTRUMENT CLUSTER DTCs Retrieve the instrument cluster DTCs using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [INSTRUMENT CLUSTER].)
		No	Go to the next step.
2	VERIFY ALL SYSTEM DTCs Clear the DTC for the audio amplifier using the M-MDS. (See CLEARING DTC [AUDIO AMPLIFIER].) Switch the ignition ON (engine off or on) and wait for 30 s or more. Perform a CMDTC self-test using the M-MDS. (See DTC INSPECTION [AUDIO AMPLIFIER].) Are there any modules other than the audio amplifier displaying the same DTC?	Yes	Using the M-MDS, perform the instrument cluster configuration (using As-Built data) again, then go to the next step. (See INSTRUMENT CLUSTER CONFIGURATION (USING AS-BUILT DATA).)
		No	Go to the next step.
3	VERIFY ALL SYSTEM DTCs AGAIN Clear the DTC for the audio amplifier using the M-MDS. (See CLEARING DTC [AUDIO AMPLIFIER].) Switch the ignition ON (engine off or on) and wait for 30 s or more. Perform a CMDTC self-test using the M-MDS. (See DTC INSPECTION [AUDIO AMPLIFIER].) Are there any modules other than the audio amplifier displaying the same DTC?	Yes	Replace the instrument cluster, then go to the next step. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
		No	Go to the next step.
4	RESET CONFIGURATION DATA FROM INSTRUMENT CLUSTER TO AUDIO AMPLIFIER Clear the DTC for the audio amplifier using the M-MDS. (See CLEARING DTC [AUDIO AMPLIFIER].) Switch the ignition ON (engine off or on) and wait for 30 s or more. Retrieve the audio amplifier DTCs using the M-MDS. (See DTC INSPECTION [AUDIO AMPLIFIER].) Is the same DTC displayed?	Yes	Replace the audio amplifier, then go to the next step. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
		No	Go to the next step.
5	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO AMPLIFIER].)
		No	DTC troubleshooting completed.

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