SUB BATTERY SYSTEM, Diagnostic DTC:B22D7

DTC Code	DTC Name
B22D7	Sub Battery Module Protection Relay Drive Circuit Malfunction

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
B22D7	Sub Battery Module Protection Relay Drive Circuit Malfunction	This DTC is stored when a malfunction is detected in the protection relay drive circuit. (1 trip detection logic)	Sub-battery Module Assembly	Comes on	DTC stored

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

B22D7

Sub Battery Module Protection Relay Drive Circuit Malfunction

This DTC is stored when a malfunction is detected in the protection relay drive circuit.

(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
"31"	CNT V1 Voltage and CNT V2 Voltage during protective relay closed control are continuously less than 8 V for 1 second
"32"	CNT V1 Voltage and CNT V2 Voltage during protective relay open control are continuously 8 V or higher for 10 seconds
"33"	Protection relay drive circuit output drop continuously occurs for 10 seconds

WIRING DIAGRAM

*a	Sub-battery Module Assembly	-	-
*1	Protection relay drive circuit	*2	Voltage detection circuit
*3	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
NEXT

END