Lexus LX - DTC B2620 ECU Power Source Circuit Malfunction

DTC B2620 ECU Power Source Circuit Malfunction
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DESCRIPTION
The ECU power source circuit supplies positive voltage to the multiplex tilt and telescopic ECU.
DTC Code Detection Condition Trouble Area
B2620
The ECU power source voltage drops to 8 V or less and
this condition continues for 10 sec. or more.
ECU-B1 fuse
Harness or connector
Multiplex tilt and telescopic ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1.INSPECT FUSE (ECU-B1)
a. Remove the ECU-B1 fuse from the main body ECU.
b. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified
Condition
ECU-B1 fuse Always Below 1 Ω
NG REPLACE FUSE
OK
2.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY)
a. Disconnect the E27 multiplex tilt and telescopic ECU connector.
b. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection Condition
Specified
Condition
E27-9 (ECUB) - Body
Always 11 to 14 V