Lexus NX: Diagnosis System
Lexus NX Service Manual / Vehicle Exterior / Mirror (ext) / Power Mirror Control System (w/o Memory) / Diagnosis System
DIAGNOSIS SYSTEM
CHECK DLC3
(a) Check the DLC3.
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INSPECT AUXILIARY BATTERY VOLTAGE
(a) Measure the auxiliary battery voltage with the power switch off.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery.
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Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th
Mirror Heater does not Operate with Rear Defogger Switch
DESCRIPTION When the rear window defogger switch (mirror heater switch) on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assem
Power Retractable Mirrors do not Operate with Power Retract Mirror Switch
DESCRIPTION When the outer mirror switch assembly (mirror retract switch) is operated, a retract/return signal is received by the main body ECU (multiplex network body ECU). The main body ECU (multipl
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ID BOX EEPROM Malfunction (B2790)
DESCRIPTION When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2790 ID BOX EEPROM Malfunction An internal malfunction occur
System Diagram
SYSTEM DIAGRAM Communication Table Transmitting ECU Receiving ECU Signal Communication Method Main body ECU (multiplex network body ECU) Multiplex network door ECU
Combination switch assembly signal
Back door opener switch assembly signal
Power back door ON/OFF signal
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