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
The rear heated oxygen sensor is used to monitor oxygen concentration in the exhaust gas. For optimum catalytic converter operation, the air fuel mixture must be maintained near the ideal ”stoichiometric” ratio. The heated oxygen sensor output voltage changes suddenly in the vicinity of the ...

Transmission valve body assy (atm)
Replacement 1. Remove engine under cover lh 2. Drain automatic transaxle fluid  remove the drain plug, gasket and drain atf.  install a new gasket and drain plug. Torque: 17.5 Nvm (178 Kgf·cm, 13 ft·lbf) 3. Remove automatic transaxle oil pan sub–assy Remove the 18 bolt ...

Starting the engine
► Automatic transmission or continuously variable transmission 1 Check that the parking brake is set. 2 Check that the shift lever is set in P. 3 Firmly depress the brake pedal. 4 Turn the engine switch to the “START” position and start the engine. ► Manual transmission 1 Check t ...

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