Toyota Venza: Diagnosis System

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Smart Key System(for Entry Function) / Diagnosis System

DIAGNOSIS SYSTEM

1. DESCRIPTION

(a) The certification ECU (smart key ECU assembly) control the vehicle smart key system functions. Smart key system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the smart key system. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

2. CHECK DLC3

(a) Check the DLC3 (See page ).

3. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (a) Disconnect the D25 certification ECU (smart key ECU assembly) connector. (b) Measure the voltage and resistance according ...

Other materials about Toyota Venza:

Installation
INSTALLATION PROCEDURE 1. INSTALL STUD BOLT (for LH Side) (a) Install the stud bolt. Torque: 17 N·m {173 kgf·cm, 13 ft·lbf} 2. INSTALL STUD BOLT (for RH Side) HINT: Perform the same proc ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE FRONT DRIVE SHAFT HOLE SNAP RING (for LH Side) (a) Using a screwdriver, remove the front drive shaft hole snap ring. 2. REMOVE NO. 2 FRONT AXLE INBOARD JOINT BOOT CLA ...

IG Power Supply Voltage Malfunction (C1551)
DESCRIPTION The power steering ECU distinguishes the ignition switch status as ON or off through the IG power source circuit. DTC No. DTC Detection Condition Trouble Area C1551 IG power source ci ...