Description
The amount of data transmitted from each control unit is read.
DTC Logic
DTC DETECTION LOGIC
DTC | Trouble diagnosis name | DTC detection condition | Possible causes |
U0300 | Internal Control Module Software Incompatibility | When the amount of data transmitted from each control unit is smaller than the specified amount. | Control units other than TCM. |
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
Is "U0300" detected?
YES >> Go to TM, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK CONTROL UNIT
Check the number of control units replaced before detecting "U0300".
Is the number of replaced control units one?
YES >> Since the replaced control unit may be out of specifications, check the part number and specifications.
NO >> GO TO 2.
2.INSPECTION CONTROL UNIT
With CONSULT
Is "U0300" detected?
YES >> Turn OFF the ignition switch to check the other control units using the same method.
NO >> Since the removed control unit may be out of specifications, check the part number and specifications.