Toyota Tacoma manuals

Toyota Corolla Repair Manual: Electronic control

  1. Removal and installation of battery terminal

  1.  before performing electrical work, disconnect the battery negative () terminal cable beforehand so as to prevent burntout damage by short.
  2.  When disconnecting and installing the terminal cable, turn the ignition switch and lighting switch off, and loosen the terminal nut completely. Perform these operations without twisting or prying the terminal.
  3.  When the battery terminal is removed, all the memories of the clock, radio, dtcs, etc. Will be erased.

    So before removing it, check them and note them down.

  1. 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 destroyed by static electricity).
  2.  To disconnect electronic connectors, pull the connector itself, not the wires.
  3.  Be careful not to drop electronic components, such as sensors or relays. If they are dropped on a hard floor, they should be replaced and not be reused.
  4.  When cleaning the engine with steam, protect the electronic components, air filter and emissionrelated components from water.
  5.  Never use an impact wrench to remove or install temperature switches or temperature sensors.
  6.  When checking the continuity at the wire connector, insert the tester probe carefully to prevent terminals from bending.

Removal and installation of fuel control parts

For vehicles equipped with srs airbag and seat belt pretensioner
Hint: the vehicle is equipped with an srs (supplemental restraint system), such as the horn button assembly, the instrument panel passenger airbag assembly, the front seat airbag assembly, the c ...

Removal and installation of fuel control parts
Place for removing and installing of fuel system parts  work in a place with good air ventilation and without anything flammable such as welder, grinder, drill, electric motor or st ...

Other materials:

Inspection procedure
1 Input signal check See input signal check on page 05745. check indicator light operation when driving with vehicle speed above 40 km/h (25 mph), and with vehicle speed below 40 km/h (25 mph). Ok: vehicle speed above 40 km/h (25 mph): indicator light blinks vehicle speed belo ...

Foamed material application areas
If an increase in temperature or other condition damages the foamed material when repairing or replacing the panel, fill in the insufficient areas with urethane foam. The following illustration shows the areas for one side, but the foamed material must be applied equally to both the left and r ...

How to proceed with troubleshooting
The handheld tester can be used at step 3, 4, 5, 7, 10. 1 Vehicle brought to workshop 2 Customer problem analysis 3 Connect handheld tester to dlc3 Hint: if the display indicates a communication fault in the tool, inspect dlc3. 4 Check dtc and freeze frame data Hint: record or print ...

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