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:

Circuit description
A thermistor is built in the engine coolant temperature sensor and changes the resistance value according to the engine coolant temperature. The structure of the sensor and connection to the ecm is the same as those of the intake air temperature sensor. Hint: if the ecm detects the dtc ...

Side mudguard sub–assy lh
Replacement Hint: use the same procedures for the rh side and lh side. 1. Remove side mudguard sub–assy lh Using a clip remover, remove the 8 retainers and 9 clips.  using a moulding remover, remove the mudguard. 2. Install side mudguard sub–assy lh Install the mudguard ...

Washer fluid
Add washer fluid in the following situations: ● A washer does not work. ● Vehicles without a multi-information display: The low windshield washer fluid warning light (if equipped) comes on. ● Vehicles with a multi-information display: The warning message (if equipped) appear ...

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