Toyota Venza: ECU Power Source Circuit

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

DESCRIPTION

This circuit provides power for main body ECU (driver side junction block assembly) operation.

WIRING DIAGRAM

PROCEDURE

1.	CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU (POWER SOURCE))

(a) Disconnect the 2C driver side junction block assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
2C-24 - Body ground	Always	11 to 14 V
2C-30 - Body ground	Always	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to Driver Side Junction Block Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND)

(a) Disconnect the 2F driver side junction block assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
2F-16 - Body ground	Always	Below 1 Ω

Text in Illustration

*1	Front view of wire harness connector (to Driver Side Junction Block Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Security Indicator Light Circuit

DESCRIPTION Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuo ...

Theft Deterrent System(w/o Smart Key System)

...

Other materials about Toyota Venza:

Inspection
INSPECTION PROCEDURE 1. INSPECT PARKING BRAKE SWITCH ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switch Condition ...

Removal
REMOVAL PROCEDURE 1. REMOVE POWER DISTRIBUTION (a) Remove the bolt. (b) Disengage the 2 claws and disconnect the power distribution from the relay box as shown in the illustration. (c) ...

Lost Communication with AFS ECU (U0182)
DESCRIPTION DTC No. DTC Detection Condition Trouble Area U0182 No communication from the AFS ECU continues. AFS ECU branch wire or connector Power source circuit of AFS E ...