DTC U2300:54, U2300:55, U2300:56, U2300:64 [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]

id0702k2745500

System malfunction location
•  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
•  Front climate control unit detects configuration data not record or data error
Fail-safe function
•  Sets the configuration value to the following fixed value
―  Destination: JAPAN
―  FSC_Types: FOW_and_LDW_and_HBC
―  PTC heater: Equipped
―  ICA_Types: Normal_Type
Possible cause
Note
•  If power from the battery is interrupted, the front climate control unit will go into a non-configured state because the memory for the configuration information is erased.
•  Normally, the configuration is re-performed within 6 s after the ignition is switched ON (engine off).
•  After performing the configuration, DTC U2300:55 will be cleared if the ignition is switched ON (engine off) after the ignition is switched off.
•  Module configuration procedure was not completed properly
•  Correct data cannot be received from instrument cluster
•  Front climate control unit malfunction
System wiring diagram
Not applicable


Diagnostic Procedure

Step

Inspection

Action
1
RECORD CAR CONFIGURATION DATA
•  Switch the ignition ON (engine off) and wait for 6 s or more.
•  Switch the ignition off.
•  Switch the ignition ON (engine off).
Go to the next step.
2
VERIFY THAT SAME DTC IS NOT PRESENT
•  Clear the DTC from the front climate control unit memory using the M-MDS.
•  Perform the front climate control unit DTC inspection using the M-MDS.
•  Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, go to the next step.
No
Go to Step 5.
3
INSPECT FOR INSTRUMENT CLUSTER MALFUNCTION
•  Perform the instrument cluster DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
After repairing the instrument cluster, perform the instrument cluster configuration.
(See INSTRUMENT CLUSTER CONFIGURATION (USING AS-BUILT DATA).)
Then go to the next step.
No
Go to the next step.
4
VERIFY THAT SAME DTC IS NOT PRESENT
•  Clear the DTC from the front climate control unit memory using the M-MDS.
•  Perform the front climate control unit DTC inspection using the M-MDS.
•  Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the front climate control unit.
Go to the next step.
No
Go to the next step.
5
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify other DTCs displayed.
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
No
DTC troubleshooting completed.