B2620 The voltage of the ECU power source drops to 8 V or less and continues for 10 seconds or more.

DESCRIPTION

The ECU power source circuit supplies positive voltage to the multiplex tilt & telescopic ECU.

DTC No.	Detection Item	Trouble Area
B2620	The voltage of the ECU power source drops to 8 V or less and continues for 10 seconds or more.	Battery Wire harness or connector Multiplex tilt & telescopic ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BETWEEN TILT & TELESCOPIC ECU AND BATTERY)

1. Disconnect the T4 connector from the multiplex tilt & telescopic ECU.

2. Measure the voltage according to the value(s) in the table below.

   Voltage:

   Tester connection (Terminal No.)	Condition	Specified value
   ECUB (T4-9) - Body ground	Always	10 to 14 V

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2. CHECK HARNESS AND CONNECTOR (BETWEEN TILT & TELESCOPIC ECU AND BODY GROUND)

1. Measure the resistance according to the value(s) in the table below.

   Resistance:

   Tester connection (Terminal No.)	Condition	Specified value
   GND (T4-11) - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE MULTIPLEX TILT & TELESCOPIC ECU