SUB BATTERY SYSTEM, Diagnostic DTC:B22D9

DTC Code	DTC Name
B22D9	Control Module Performance

DESCRIPTION

The sub-battery ECU monitors the condition of the internal parts and outputs the following DTC if a malfunction is detected.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
B22D9	Control Module Performance	This DTC is stored when a malfunction is detected in the sub-battery ECU. (1 trip detection logic)	Sub-battery module assembly	Comes on	DTC stored

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

B22D9

Control Module Performance

This DTC is stored when a malfunction is detected in the sub-battery ECU.

(1 trip detection logic)

Sub-battery module assembly

Comes on

DTC stored

Tech Tips

The details of a DTC can be checked by using the DTC Sub Code of the freeze frame data that was recorded when the DTC was output.

DTC Sub Code	Detail
"1E"	ECU CAN controller
"1F"	Program memory malfunction
"20"	Data memory malfunction
"21"	RAM check malfunction
"22"	ECM RAM (for stack)
"23"	Internal A/D converter malfunction

WIRING DIAGRAM

*a	Sub-battery Module Assembly	-	-
*1	Sub-battery ECU	*2	CPU

CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the sub-battery module assembly condition when malfunctions are detected.

PROCEDURE

REPLACE SUB-BATTERY MODULE ASSEMBLY

Replace the sub-battery module assembly.

Result

Proceed to
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END