Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY)
(a) Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| J5-1 (IG) - Body ground | B - Body ground | Power switch signal | Power switch off | Below 1 V |
| Power switch on (IG) | 11 to 14 V | |||
| J5-2 (B) - Body ground | G - Body ground | Auxiliary battery | Power switch off | 11 to 14 V |
| J5-4 (ES) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| J5-9 (SW1) - Body ground | R - Body ground | Headup display switch signal | Power switch on (IG), headup display switch (HUD) off | 4.7 to 5.5 V |
| Power switch on (IG), headup display switch (HUD) on | 0 to 0.6 V | |||
| Power switch on (IG), headup display switch (DISP) off | 4.7 to 5.5 V | |||
| Power switch on (IG), headup display switch (DISP) on | 0.8 to 1.6 V | |||
| J5-10 (SW2) - Body ground | L - Body ground | Headup display switch signal | Power switch on (IG), headup display switch (contrast up) off | 4.7 to 5.5 V |
| Power switch on (IG), headup display switch (contrast up) on | 0.8 to 1.6 V | |||
| Power switch on (IG), headup display switch (contrast down) off | 4.7 to 5.5 V | |||
| Power switch on (IG), headup display switch (contrast down) on | 0 to 0.6 V | |||
| Power switch on (IG), headup display switch (position up) off | 4.7 to 5.5 V | |||
| Power switch on (IG), headup display switch (position up) on | 3.1 to 4.1 V | |||
| Power switch on (IG), headup display switch (position down) off | 4.7 to 5.5 V | |||
| Power switch on (IG), headup display switch (position down) on | 1.8 to 2.7 V | |||
| J5-12 (MPX1) - Body ground | Y - Body ground | Radio receiver assembly communication signal | Power switch on (IG) | Pulse generation |
| J5-13 (MPX2) - Body ground | W - Body ground | Radio receiver assembly communication signal | Power switch on (IG) | Pulse generation |
| J5-14(CS) | B | Local bus communication line | - | - |
| J5-15(TX-) | W | Local bus communication line | - | - |
| J5-16 (E) - Body ground | B - Body ground | Ground (Illumination ground) | Always | Below 1 Ω |
READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Head Up Display / Tr
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa
Diagnostic Trouble Code Chart
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SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT REAR COMBINATION LIGHT ASSEMBLY LH (a) Apply battery voltage to the connector and check the light illumination condition. OK: Battery Connection Specified Condition Positive (+) → 1 (TRN) Negative (-) → 4 (E) Turn Signal light illuminates Positi
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 tele
