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:

Positioning a floor jack
When using a floor jack, follow the instructions in the manual provided with the jack and perform the operation safely. When raising your vehicle with a floor jack, position the jack correctly. Improper placement may damage your vehicle or cause injury. ◆ Front ◆ Rear 1 Take out ...

Auto Start/Stop function
Concept The Auto Start/Stop function helps save fuel. The system switches off the engine during a stop, for instance in traffic congestion or at traffic lights. Drive-ready state remains switched on. The engine starts automatically for driving off. General information After each engine start using ...

Using the AUX port
To use the AUX port, connect a portable player, press the “AUDIO” button, then select “AUX” to display the audio control screen. Connecting a portable audio player ■Operating portable audio players connected to the multimedia system The volume can be adjusted using the vehicle's audio ...

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