Lexus LX - Page 152

Only the actuator can be checked in this procedure. If it is normal, the steering control ECU is faulty.
1.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified
Condition
E82-7 (PGND) - Body
ground
Always Below 1 Ω
E83-8 (PGD2) - Body
ground
b. Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection Condition
Specified
Condition
E82-8 (PIG) - Body
ground
Always 11 to 14 V
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
2.CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)
a. Disconnect the E83 steering control ECU connector.
b. Disconnect the E85 steering actuator connector.
c. Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified
Condition
E83-1 (BMV) - E83-2
(BMU)
Always 10 kΩ or higher
E83-1 (BMV) - E83-3
(BMW)
E83-2 (BMU) - E83-3
(BMW)
E83-1 (BMV) - E85-5
(BMV+)
Always Below 1 Ω
E83-2 (BMU) - E85-4
(BMU+)
E83-3 (BMW) - E85-
13 (BMW+)
E83-1 (BMV) - Body
ground