Toyota Venza: ECU Power Source Circuit

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/o Smart Key System) / ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the transponder key ECU assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the transponder key ECU assembly is replaced, register the key and ECU communication ID (See page ).

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - BATTERY AND BODY GROUND)

(a) Disconnect the transponder key ECU assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
D22-1 (+B) - Body ground	Always	11 to 14 V
D22-2 (IG) - Body ground	Ignition switch off	Below 1 V
D22-2 (IG) - Body ground	Ignition switch ON	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
D22-16 (GND) - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to Transponder Key ECU Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE FUSE

Security Indicator Light Circuit

DESCRIPTION The security indicator light blinks continuously due to a continuous signal received from the transponder key ECU assembly while in the armed state. WIRING DIAGRAM CAUTION / NOTICE ...

Diagnosis Circuit

DESCRIPTION This circuit is used to read the DTCs that are output from the transponder key ECU assembly with the Techstream. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: If the transponder ...

Other materials about Toyota Venza:

Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)
DESCRIPTION If a door glass or a power window regulator motor assembly does not operate smoothly, the jam protection function may be triggered automatically, resulting in the auto up function being unable to fully close the window. HINT: This symptom ma ...

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTCS (a) Turn the engine switch off. (b) Connect the Techstream to the DLC3. (c) Turn the engine switch on (IG). (d) Turn the Techstream on. (e) Check for DTCs. Enter the following menus: Body Electrical / Smart Key / Trouble ...