Lexus NX: Diagnosis System
Lexus NX Service Manual / Steering / Steering Column / Power Tilt And Power Telescopic Steering Column System / Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with the diagnostic system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the multiplex tilt and telescopic ECU.
The multiplex tilt and telescopic ECU stores DTCs when the ECU detects a malfunction in itself or in its circuits.
To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables the DTCs to be cleared, several actuators to be activated, and the freeze frame data and various forms of steering data to be checked.
CHECK DLC3
(a) Check the DLC3.
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Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
Freeze frame data values will vary depending on the measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem
Fail-safe Chart
FAIL-SAFE CHART HINT: If the power source voltage to the multiplex tilt and telescopic ECU returns to normal within 10 seconds during tilt or telescopic operation, the operation will be resumed. If it
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Components
COMPONENTS ILLUSTRATION *1 AIR CLEANER CAP AND HOSE *2 EGR VALVE ASSEMBLY *3 NO. 1 ENGINE COVER SUB-ASSEMBLY *4 GASKET *5 NO. 1 EGR PIPE *6 NO. 1 WATER BY-PASS HOSE *7 NO. 2 WATER BY-PASS HOSE *8 FUEL VAPOR FEED HOSE *9 NO. 2 FUEL VAPOR FEED HOSE *10
Terminals Of Ecu
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here CHECK HEADLIGHT ECU SUB-ASSEMBLY LH Click here CHECK HEADLIGHT ECU SUB-ASSEMBLY RH Click here
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