DTC U2300:55 [CONNECTIVITY MASTER UNIT]

Description	Instrument cluster configuration not implemented
Detection condition	• The connectivity master unit (CMU) detected any of the following conditions with the ignition switched to ACC or ON (engine off or on). ― Instrument cluster configuration not read ― Configuration data cannot be written to connectivity master unit (CMU) memory.
Fail-safe	Not applicable
Possible cause	Note • To correctly write the configuration data, which is sent from the instrument cluster to the connectivity master unit (CMU), to the connectivity master unit (CMU), 3 s or more must have elapsed since the ignition was switched ON (engine off or on). • Instrument cluster configuration is not completed. • Connectivity master unit (CMU) malfunction
System wiring diagram	Not applicable

Description

Instrument cluster configuration not implemented

Detection condition

• The connectivity master unit (CMU) detected any of the following conditions with the ignition switched to ACC or ON (engine off or on).

― Instrument cluster configuration not read

― Configuration data cannot be written to connectivity master unit (CMU) memory.

Fail-safe

Not applicable

Possible cause

Note

• To correctly write the configuration data, which is sent from the instrument cluster to the connectivity master unit (CMU), to the connectivity master unit (CMU), 3 s or more must have elapsed since the ignition was switched ON (engine off or on).

• Instrument cluster configuration is not completed.

• Connectivity master unit (CMU) malfunction

System wiring diagram

Not applicable

Step	Inspection	Action
1	RESET CONFIGURATION DATA FROM INSTRUMENT CLUSTER TO CONNECTIVITY MASTER UNIT (CMU) • 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 10 s or more. • Retrieve the connectivity master unit (CMU) DTCs 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).)
No	Go to Step 3
2	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 10 s or more. • Retrieve the connectivity master unit (CMU) DTCs using the M-MDS. (See DTC INSPECTION [CONNECTIVITY MASTER UNIT].) • Is the same DTC displayed?	Yes	Replace the connectivity master unit (CMU), then go to the next step. (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)
No	Go to the next step.
3	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 [CONNECTIVITY MASTER UNIT].)
No	DTC troubleshooting completed.

Step

Inspection

Action

RESET CONFIGURATION DATA FROM INSTRUMENT CLUSTER TO CONNECTIVITY MASTER UNIT (CMU)

• 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 10 s or more.

• Retrieve the connectivity master unit (CMU) DTCs using the M-MDS.

(See DTC INSPECTION [CONNECTIVITY MASTER UNIT].)

• Is the same DTC displayed?