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
DIAGNOSTIC TROUBLE CODE CHART Headup Display System DTC No. Detection Item Memory Link U0100 Lost Communication with ECM / PCM "A" DTC stored U0142 Lost Communication With
SEE MORE:
Pointer not Displayed on Screen or Pointer does not Move
CAUTION / NOTICE / HINT NOTICE: When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
A communication malfunction DTC may be stored.
The radio receiver assembly may not
Terminals Of Ecu
TERMINALS OF ECU *A w/ Manual (SOS) Switch - - Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
*1: w/ Manual (SOS) Switch
*2: w/o Manual (SOS) Switch #: There is no wire color information I151-1 (GND1) - Body ground W-B - Body g
