Toyota Venza manuals

Toyota Venza: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK TIRE PRESSURE WARNING ECU

HINT:

Inspect the connectors from the back side while the connectors are connected.


(a) Disconnect the L14 tire pressure warning antenna and receiver connector.

(b) Measure the voltage according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

D31-12 (RDA) - D31-9 (GND)

Y - W-B

Tire pressure warning antenna and receiver signal

Ignition switch ON

11 to 14 V

(c) Connect the L14 tire pressure warning antenna and receiver connector.

(d) Measure the voltage and resistance according to the value(s) in the table below. If the result is not as specified, the ECU may have a malfunction.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

D31-2 (SPD) - D31-9 (GND)

P - W-B

Vehicle speed signal

Vehicle driving

Pulse generation (see waveform 1)

D31-3 (TC) - D31-9 (GND)

BR - W-B

TC terminal

Terminal TC not connected

11 to 14 V

D31-4 (TACH) - D31-9 (GND)

V - W-B

Engine speed signal

Engine running

Pulse generation (see waveform 2)

D31-5 (IND) - D31-9 (GND)

LG - W-B

Tire pressure warning light output signal

  • Ignition switch ON
  • Tire pressure warning light OFF

Below 0.5 V

After ignition switch is turned to ON, tire pressure warning light illuminates for 3 seconds.

0.9 to 3.2 V

D31-6 (RF5V) - D31-9 (GND)

R - W-B

Tire pressure warning antenna and receiver power source

Ignition switch ON

11 to 14 V

D31-7 (IG) - D31-9 (GND)

GR - W-B

IG power source

Ignition switch ON

11 to 14 V

D31-9 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

D31-10 (SIL) - D31-9 (GND)

P - W-B

Diagnostic communication

Ignition switch ON

8 to 14 V

D31-11 (GND2) - D31-9 (GND)

W - W-B

Tire pressure warning antenna and receiver ground

Always

Below 1 Ω

D31-12 (RDA) - D31-9 (GND)

Y - W-B

Tire pressure warning antenna and receiver signal

Ignition switch ON

11 to 14 V

(e) Using an oscilloscope, check waveform 1.

Waveform 1

Item

Content

Terminal

D31-2 (SPD) - D31-9 (GND)

Tool setting

5 V/DIV, 20 ms./DIV.

Vehicle condition

Driving at approximately 20 km/h (12 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

(f) Using an oscilloscope, check waveform 2.

Waveform 2

Item

Content

Terminal

D31-4 (TACH) - D31-9 (GND)

Tool setting

5 V/DIV., 10 ms./DIV.

Vehicle condition

Idling

HINT:

The wavelength becomes shorter as the engine speed increases.

Diagnosis System
DIAGNOSIS SYSTEM 1. CHECK BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge the battery before proceeding to the next step. 2. CHECK DLC3 (a) The ECU uses IS ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. DTC CHECK (USING SST CHECK WIRE) (a) Turn the ignition switch off. (b) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3. SST: 09843-18040 (c) Turn the ignition s ...

Other materials about Toyota Venza:

Terminals Of Ecu
TERMINALS OF ECU NOTICE: Turn the ignition switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires. Turn the ignition switch off before inspecting CAN bus wires for a ground short. After ...

Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch
DESCRIPTION If the manual up/down function can be performed but the auto up/down function cannot, then the fail-safe mode may be functioning. If the power window initialization (See page ) has not been performed, the auto up/down function will not oper ...

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR SEAT ASSEMBLY RH (a) Place the rear seat assembly RH in the cabin. NOTICE: Be careful not to damage the vehicle body. (b) Temporarily install the 2 bolts on the front side of the seat. ...

© 2016-2024 Copyright www.tovenza.com

0.1145