Toyota Tacoma manuals

Toyota Corolla Repair Manual: Description

If the malfunction does not reoccur in 3 consecutive trips, the mil goes off automatically but the dtcs remain recorded in the ecm memory.

Priorities for troubleshooting: if troubleshooting priorities for multiple dtcs are given in the applicable dtc chart, these priorities should be followed.

If no instructions are given, perform troubleshooting for those dtcs according to the following priorities.

  1.  dtcs other than fuel trim malfunction (dtcs p0171 and p0172) and misfire (dtcs p0300 to p0304).
  2.  fuel trim malfunction (dtcs p0171 and p0172).
  3.  misfire (dtcs p0300 to p0304).

Check dlc3

Diagnosis system

Check dlc3
The vehicles ecm uses the iso 91412 for communication protocol. The terminal arrangement of the dlc3 complies with sae j1962 and matches the iso 91412 format. Hint: if the display shows una ...

Other materials:

Inspection procedure
1 Check fuse(ecuig) Remove the ecuig fuse from the instrument panel j/b.  check the continuity of the ecuig fuse. Ok: continuity 2 Inspect terminal voltage(b) Remove the cruise control ecu assy with connector still connected.  turn the ignition switch to on. ...

Circuit description
In the diagram below, when the engine is cranked, current flows from terminal st2 of the ignition switch to the starter relay coil and also current flows to terminal sta of the ecm (sta signal). When the sta signal and ne signal are input to the ecm, tr is turned on, current flows to the c ...

Hint: components: 1. Discharge refrigerant from refrigeration system sst 0711058060 (0711758080, 0711758090, 0711778050, 0711788060, 0711788070, 0711788080) 2. Disconnect cooler refrigerant suction hose no.1   Remove the bolt and disconnect the cooler refrigerant suction ...

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