Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

Handheld tester:

1 Perform active test by handheld tester(operation of circuit opening relay)

  1. Connect the handheld tester to the dlc3.
  2.  turn the ignition switch on and push the handheld tester main switch on.
  3.  select the item diagnosis / enhanced obd ii / active test / fuel pump / spd.
  4.  check the relay operation while operating it with the handheld tester.

Standard: operating noise can be heard from the relay.

2 Inspect ecm power source circuit

2 Inspect ecm power source circuit

3 Inspect circuit opening relay

3 Inspect circuit opening relay

  1. Remove the circuit opening relay from the instrument panel j/b.
  2.  check for continuity in the circuit opening relay.

Standard:

  1. Reinstall the circuit opening relay.

4 Inspect ecm(fc voltage)

4 Inspect ecm(fc voltage)

  1. Turn the ignition switch on.
  2.  measure the voltage between the terminals of the e3 and e6 ecm connectors.

Standard:

5 Check harness and connector(efi relay  circuit opening relay)

5 Check harness and connector(efi relay circuit opening relay)

  1. Remove the efi relay from the engine room r/b.
  2.  remove the circuit opening relay from the instrument panel j/b.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reinstall the circuit opening relay.
  2.  reinstall the efi relay.

Replace ecm

Replace ecm

6 Inspect fuel pump

7 Check harness and connector(circuit opening relay  fuel pump,

7 Check harness and connector(circuit opening relay fuel pump, fuel pump body ground)

  1. Remove the circuit opening relay from the instrument panel j/b.
  2.  disconnect the f10 fuel pump connector.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the fuel pump connector.
  2.  reinstall the circuit opening relay.

Replace ecm

Replace ecm

Obd ii scan tool (excluding handheld tester):

1 Check operation of fuel pump

  1. Turn the ignition switch on.
  2.  connect between terminals fc and e01 of the ecm connector.
  3. check for fuel pressure in the fuel inlet hose when it is pinched off.

    Result: there is pressure in fuel inlet hose.

Hint

: at this time, you will hear the fuel flowing sound.

2 Inspect ecm power source circuit

2 Inspect ecm power source circuit

3 Inspect circuit opening relay

3 Inspect circuit opening relay

  1. Remove the circuit opening relay from the instrument panel j/b.
  2.  check for continuity in the circuit opening relay.

Standard:

  1. Reinstall the circuit opening relay.

4 Inspect ecm(fc voltage)

4 Inspect ecm(fc voltage)

  1. Turn the ignition switch on.
  2.  measure the voltage between the terminals of the e3 and e6 ecm connectors.

Standard:

5 Check harness and connector(efi relay  circuit opening relay)

5 Check harness and connector(efi relay circuit opening relay)

  1. Remove the efi relay from the engine room r/b.
  2.  remove the circuit opening relay from the instrument panel j/b.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reinstall the circuit opening relay.
  2. reinstall the efi relay.

Replace ecm

Replace ecm

6 Inspect fuel pump

7 Check harness and connector(circuit opening relay  fuel

7 Check harness and connector(circuit opening relay fuel pump,fuel pump body ground)

  1. Remove the circuit opening relay from the instrument panel j/b.
  2.  disconnect the f10 fuel pump connector.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the fuel pump connector.
  2.  reinstall the circuit opening relay.

Replace ecm

Replace ecm

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). ...

Stop light switch circuit
...

Other materials:

Replacement
Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove instrument panel subassy lower Remove the screw from the glove compartment door stopper subassy.  pull the instrument panel subassy lower to remove it. 4. Separate passenger airbag connecto ...

Inspection procedure
1 Inspect transmission wire(s2) Disconnect the transmission wire connector from the transaxle.  measure the resistance according to the value(s) in the table below. Standard: 2 Check harness and connector(transmission wire ecm) Connect the transmission connecto ...

Circuit description
Refer to dtc p0130 Dtc no. Dtc detection condition Trouble area P0133 After engine has been warmed up, if response time that heated oxygen sensors output voltage reaches from rich to lean. Or from lean to rich, is 0.6 Second or more during idling. (2 ...

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