DTC P06B8:00 [FW6A-EL]

id050225325000

DTC P06B8:00

NVRAM malfunction

DETECTION CONDITION

•  Under the following conditions, TCM internal NVRAM data retention/read/write disabled:

―  Battery voltage is 8 V or more.

Diagnostic support note

•  The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle.

•  The AT warning light does not illuminate.

•  PENDING CODE is available.

•  FREEZE FRAME DATA is available.

•  The DTC is stored in the TCM memory.

FAIL-SAFE FUNCTION

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POSSIBLE CAUSE

•  TCM initial learning error

•  Control valve body malfunction

―  TCM internal NVRAM malfunction

SYSTEM WIRING DIAGRAM

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DTC P06B8:00	NVRAM malfunction
DETECTION CONDITION	• Under the following conditions, TCM internal NVRAM data retention/read/write disabled: ― Battery voltage is 8 V or more. Diagnostic support note • The MIL illuminates if the TCM detects the above malfunction condition during the first drive cycle. • The AT warning light does not illuminate. • PENDING CODE is available. • FREEZE FRAME DATA is available. • The DTC is stored in the TCM memory.
FAIL-SAFE FUNCTION	—
POSSIBLE CAUSE	• TCM initial learning error • Control valve body malfunction ― TCM internal NVRAM malfunction
SYSTEM WIRING DIAGRAM	—

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA/SNAPSHOT DATA HAS BEEN RECORDED • Has the freeze frame data/snapshot data been recorded on the repair order?	Yes	Go to the next step.
1		No	Record the freeze frame data/snapshot data on the repair order, then 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.
2		No	Go to the next step.
3	PERFORM INITIAL LEARNING • Perform the initial learning. (See INITIAL LEARNING [FW6A-EL].) • Clear the DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) • Perform the following procedure to ensure that the DTC has been resolved: 1. Switch the ignition to ON. • Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) • Is the same DTC present?	Yes	Replace the control valve body, then go to the next step. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)
3		No	DTC troubleshooting completed.
4	VERIFY DTC TROUBLESHOOTING COMPLETED • Clear the DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) • Perform the following procedure to ensure that the DTC has been resolved: 1. Switch the ignition to ON. • Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)
4		No	DTC troubleshooting completed.