Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

Hint

:

1 Read value of hand–held tester or obd ii scan tool(intake air temperature)

  1. Connect the hand–held tester or the obd ii scan tool to the dlc3.
  2.  turn the ignition switch on and push the hand–held tester or the obd ii scan tool main switch on.
  3.  select the item ”diagnosis / enhanced obd ii / data list / all / intake air” and read its value displayed on the hand–held tester or the obd ii scan tool.

Temperature: same value as the actual intake air temperature.

Result:

Hint:

Hint

:

2 Read value of hand–held tester or obd ii scan tool(check for

2 Read value of hand–held tester or obd ii scan tool(check for open in wire harness)

  1. Disconnect the m1 mass air flow sensor connector
  2.  connect terminals tha and e2 of the mass air flow sensor wire harness side connector.
  3.  turn the ignition switch on.
  4.  select the item ”diagnosis / enhanced obd ii / data list / all / intake air” and read its value displayed on the hand–held tester or the obd ii scan tool.

    Temperature value: 140 °C (284°f) or more

  5.  reconnect the mass air flow sensor connector.

3 Read value of hand–held tester or obd ii scan tool(check for

3 Read value of hand–held tester or obd ii scan tool(check for open in ecm)

  1. Disconnect the m1 mass air flow sensor connector.
  2.  connect the terminals tha and e2 of the e3 ecm connector.

    Hint

    : before checking, do a visual and contact pressure check on the ecm connector.

  3.  turn the ignition switch on.
  4.  select the item ”diagnosis / enhanced obd ii / data list / all / intake air” and read its value displayed on the hand–held tester or the obd ii scan tool.

    Temperature value: 140 °C (284°f) or more

  5.  reconnect the mass air flow sensor connector.

Confirm good connection at ecm. If ok, replace ecm

Confirm good connection at ecm. If ok, replace ecm

4 Read value of hand–held tester or obd ii scan tool(check for short in wire harness)

  1. Disconnect the m1 mass air flow sensor connector.
  2. turn the ignition switch on.
  3.  select the item ”diagnosis / enhanced obd ii / data list / all / intake air” and read its value displayed on the hand–held tester or the obd ii scan tool.

    Temperature value: –40 °C (–40°f)

  4.  reconnect the mass air flow sensor connector.

5 Read value of hand–held tester or obd ii scan tool(check for

5 Read value of hand–held tester or obd ii scan tool(check for short in ecm)

  1. Disconnect the e3 ecm connector.
  2.  turn the ignition switch on.
  3.  select the item ”diagnosis / enhanced obd ii / data list / all / intake air” and read its value displayed on the hand–held tester or the obd ii scan tool.

    Temperature value: –40 °C (–40°f)

  4.  reconnect the ecm connector.

Replace ecm

Replace ecm

Circuit description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf) sensor, monitors the intake air temperature. The iat sensor has a thermistor that varies its resistance depending on ...

Engine coolant temperature circuit
Dtc p0115 engine coolant temperature circuit Dtc p0117 engine coolant temperature circuit low input Dtc p0118 engine coolant temperature circuit high input ...

Other materials:

Malfunction in tachometer
Wiring diagram Inspection procedure Check output value of ecm.  Connect the hand–held tester to dlc3. Turn the ignition switch to on and push the hand–held tester main switch on.  Select the data list mode on the hand–held tester. 2 Inspect combination mete ...

Air conditioning filter
The air conditioning filter must be changed regularly to maintain air conditioning efficiency. Removal method 1Turn the engine switch off. 2 Open the glove box. Slide off the damper. 3 Push in the glove box on the vehicle’s outer side to disconnect the claws. Then pull out the glove box an ...

Noise occurs
Inspection procedure 1 Check of speaker installation Check speaker installation condition.  Check that each speaker is securely installed. Standard: malfunction disappear. Hint: the radio is equipped with noise prevention system that does not work against the regular use of t ...

© 2011-2019 Copyright www.tcorolla.net