Toyota Sienna Service Manual: Electronic control

Toyota Sienna Service Manual / Introduction / Repair instruction / Precaution / Electronic control

(a) REMOVAL AND INSTALLATION OF BATTERY TERMINAL

REMOVAL AND INSTALLATION OF BATTERY TERMINAL

NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

(1) Before performing electronic work, disconnect the cable from the negative (-) battery terminal to prevent component and wire damage caused by accidental short circuits.

(2) When disconnecting the cable, turn the ignition switch and headlight dimmer switch off and loosen the cable nut completely. Perform these operations without twisting or prying the cable.

Then disconnect the cable.

(3) Clock settings, radio settings, audio system memory, DTCs and other data are erased when the cable is disconnected from the negative (-) battery terminal. Write down any necessary data before disconnecting the cable.

(b) HANDLING OF ELECTRONIC PARTS

HANDLING OF ELECTRONIC PARTS

(1) Do not open the cover or case of the ECU unless absolutely necessary. If the IC terminals are touched, the IC may be rendered inoperative by static electricity.

(2) Do not pull the wires when disconnecting electronic connectors. Pull the connector itself.

(3) Do not drop electronic components, such as sensors or relays. If they are dropped on a hard surface, they should be replaced.

(4) When cleaning the engine with steam, protect the electronic components, air filter and emission-related components from water.

(5) Never use an impact wrench to remove or install temperature switches or temperature sensors.

(6) When measuring the resistance between terminals of a wire connector, insert the tester probe carefully to prevent terminals from bending.

For vehicles equipped with srs airbag and seat belt pretensioner

The SIENNA is equipped with a Supplemental Restraint System (SRS). CAUTION: Failure to carry out the service operations in the correct sequence could cause the SRS to unexpectedly deploy during se ...

Removal and installation of fuel control parts

(a) PLACE FOR REMOVING AND INSTALLING FUEL SYSTEM PARTS (1) Work in a location with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignitio ...

Other materials:

Erasing the entire HomeLink® memory (all three programs)
Press and hold down the 2 outside buttons for 10 seconds until the indicator light flashes. If you sell your vehicle, be sure to erase the programs stored in the HomeLink® memory. Before programming Install a new battery in the transmitter. The battery side of the transmitter must ...

No Master/ Connection Check Error
DTC 01-D6 No Master DTC 01-D7 Connection Check Error DESCRIPTION HINT: *1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage. *2: When 210 seconds have elapsed after disconnecting the power supply ...

Reassembly
1. INSTALL CENTER CLUSTER MODULE KNOB NO.6 (for Automatic Air Conditioning System) 2. INSTALL CENTER CLUSTER MODULE KNOB NO.5 (for Automatic Air Conditioning System) 3. INSTALL CLOCK ORNAMENT 4. INSTALL PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY (for Automatic Air Conditioning System) 5. IN ...