Toyota Venza: Precaution

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Precaution

PRECAUTION

1. INITIALIZATION

NOTICE:

Perform the Registration (VIN registration) when replacing the ECM (See page ).

HINT:

Reset memory or initialization cannot be completed by only disconnecting and reconnecting the cable of the negative (-) battery terminal.

2. FOR USING TECHSTREAM

CAUTION:

Observe the following items for safety reasons:

Before using the Techstream, read the instruction manual.
Prevent the Techstream cable from being caught on the pedals, shift lever or steering wheel when driving with the Techstream connected to the vehicle.
When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One is for driving the vehicle, and the other operates the Techstream.

3. DISCONNECTING AND RECONNECTING NEGATIVE (-) BATTERY CABLE

(a) Before performing work on electronic components, disconnect the cable from the negative (-) battery terminal to prevent damage to electrical system or electrical components.

Text in Illustration

*1	Negative (-) Battery Terminal
*2	Cable

(b) Before disconnecting and reconnecting the battery cable, turn the ignition switch off and the headlight switch off. Then loosen the terminal nut completely. Do not damage the cable or terminal.

(c) When the battery cable is disconnected, the clock and radio settings and stored DTCs are cleared. Therefore, before disconnecting the battery cable, make a note of them.

NOTICE:

When disconnecting and reconnecting the cable of the negative (-) battery terminal, the cowl top ventilator louver must also be removed and installed. Be sure to install the cowl top ventilator louver properly. If it is not installed properly, water may enter the engine compartment and cause malfunctions.
When the cable is disconnected from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected.

System Name	See Procedure
Back Door Closer System
Power Back Door System

4. EXPRESSION OF IGNITION SWITCH

HINT:

The type of ignition switch used on this model differs according to the specifications of the vehicle.

The expressions listed in the table below are used in this section.

Expression	Switch Type
Expression	Ignition Switch (Position)	Engine Switch (Condition)
Ignition switch off	LOCK	Off (Lock)
Ignition switch ON	ON	On (IG)
Ignition switch ACC	ACC	On (ACC)
Engine start	START	On (Start)

Definition Of Terms

DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose ...

Other materials about Toyota Venza:

Short in Driver Side Squib Circuit (B1800/51-B1803/51)
DESCRIPTION The driver side squib circuit consists of the center airbag sensor assembly, spiral cable and steering pad. The center airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met. These DTCs are stored wh ...

Open in Outside Luggage Compartment Electrical Key Antenna Circuit (B27A8)
DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and sends it to the outside electrical key oscillator (for rear side). To detect the key near the driver door, the outside electrical key oscillator (for rear side) cr ...

System Voltage (P0560)
DESCRIPTION The battery supplies electricity to the TCM even when the ignition switch is off. This power allows the TCM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, these memories are cleared ...