DTC P06B8:00 [FW6A-EL]

id050225325000

DTC P06B8:00

NVRAM malfunction
DETECTION CONDITION
•  Under the following condition, TCM internal NVRAM data retention/read/write disabled:
―  Battery voltage is 8 V or more.
FAIL-SAFE FUNCTION
Not applicable
POSSIBLE CAUSE
•  TCM initial learning error
•  Control valve body malfunction
―  TCM internal NVRAM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture of the PC function.
•  Record the freeze frame data/snap shot data.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
PERFORM INITIAL LEARNING
•  Perform the initial learning.
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Switch the ignition ON (engine off or on).
•  Perform the DTC inspection using the M-MDS.
•  Is the DTC P06B8:00 also present?
Yes
Replace the control valve body, then go to the next step.
(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)
No
DTC troubleshooting completed.
4
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Switch the ignition ON (engine off or on).
•  Perform the DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)
No
DTC troubleshooting completed.