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:

Power Back Door Control Switch
Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT POWER BACK DOOR OPENER / CLOSER SWITCH (a) Measure the resistance of the switch. Standard resistance: Tester Connection Condition S ...

Terminals Of Ecu
TERMINALS OF ECU HINT: Check from the rear of the connector while it is connected to the components. 1. RADIO AND DISPLAY RECEIVER ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Starting Control or Power Source Control / Trouble Codes. (e) Read t ...