DTC U2300:54 [CONNECTIVITY MASTER UNIT]

id0902n7106500

Description

Configuration data not received from instrument cluster

Detection condition

•  The connectivity master unit (CMU) cannot receive the configuration data from the instrument cluster for 30 s or more with the ignition switched ON (engine off or on).

Fail-safe function

Not applicable

Possible cause

•  DTCs are stored in the instrument cluster.

―  Instrument cluster configuration not implemented

―  Instrument cluster internal memory malfunction

•  Instrument cluster configuration data error

•  Connectivity master unit (CMU) malfunction

System wiring diagram

Not applicable

Description	Configuration data not received from instrument cluster
Detection condition	• The connectivity master unit (CMU) cannot receive the configuration data from the instrument cluster for 30 s or more with the ignition switched ON (engine off or on).
Fail-safe function	Not applicable
Possible cause	• DTCs are stored in the instrument cluster. ― Instrument cluster configuration not implemented ― Instrument cluster internal memory malfunction • Instrument cluster configuration data error • Connectivity master unit (CMU) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY INSTRUMENT CLUSTER DTCs • Perform the DTC inspection for the instrument cluster using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) • Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [INSTRUMENT CLUSTER].)
1		No	Go to the next step.
2	RESET INSTRUMENT CLUSTER CONFIGURATION DATA • Using the M-MDS, perform the instrument cluster configuration with the As-Built data. (See INSTRUMENT CLUSTER CONFIGURATION (USING READ/WRITE FUNCTION).) • Clear the DTC for the connectivity master unit (CMU) using the M-MDS. (See CLEARING DTC [CONNECTIVITY MASTER UNIT].) • Switch the ignition ON (engine off or on) and wait for 37 s or more. • Perform the DTC inspection for the connectivity master unit (CMU) using the M-MDS. (See DTC INSPECTION [CONNECTIVITY MASTER UNIT].) • Is the same DTC displayed?	Yes	Using the M-MDS, re-perform the instrument cluster configuration using the As-Built data, then go to the next step. (See INSTRUMENT CLUSTER CONFIGURATION (USING AS-BUILT DATA).)
2		No	Go to Step 4.
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear the DTC for the connectivity master unit (CMU) using the M-MDS. (See CLEARING DTC [CONNECTIVITY MASTER UNIT].) • Switch the ignition ON (engine off or on) and wait for 37 s or more. • Perform the DTC inspection for the connectivity master unit (CMU) using the M-MDS. (See DTC INSPECTION [CONNECTIVITY MASTER UNIT].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the connectivity master unit (CMU). (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.) Go to the next step.
3		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [CONNECTIVITY MASTER UNIT].)
4		No	DTC troubleshooting completed.