DTC U0402:68 [INSTRUMENT CLUSTER]

id0902e8988900

Description	Error signal received from transmission/transaxle
Detection condition	•  Instrument cluster received the error signals from the transmission/transaxle for 1 s or more with the ignition switched ON (engine off or on).
Fail-safe function	Not applicable
Possible cause	•  The transaxle could not send a normal signal temporarily. (DTCs are stored in the TCM.) •  TCM malfunction •  Instrument cluster malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY TCM DTCs •  Retrieve the TCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [GW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [CW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [EW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FN4A-EL].) •  Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [GW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [CW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [EW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FN4A-EL].)
		No	Go to the next step.
2	DRIVE VEHICLE THEN VERIFY DTCs FOR TCM AGAIN •  Drive the vehicle at a vehicle speed of 30 km/h {19 mph} or more for 100 s or more. •  Retrieve the TCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [GW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [CW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [EW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FN4A-EL].) •  Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [GW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [CW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [EW6A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FN4A-EL].)
		No	Go to the next step.
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED •  Clear the DTC for the instrument cluster using the M-MDS. (See CLEARING DTC [INSTRUMENT CLUSTER].) •  Switch the ignition ON (engine off or on) and wait for 20 s or more. •  Retrieve the instrument cluster DTCs using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) •  Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
4	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 [INSTRUMENT CLUSTER].)
		No	DTC troubleshooting completed.