Toyota RAV4 manuals

Toyota RAV4 Service Manual: Ecm / pcm internal engine off timer performance

Toyota RAV4 Service Manual / 2Az-fe engine mechanical / Sfi system / Diagnostic trouble code chart / Ecm / pcm internal engine off timer performance

Toyota RAV4. Ecm / pcm internal engine off timer performance


Dtc summary

Toyota RAV4. Ecm / pcm internal engine off timer performance


Description

To ensure the accuracy of the evap (evaporative emission) monitor values, the soak timer, which is built into the ecm, measures 5 hours (+-15 minutes) from when the ignition switch is turned off, before the monitor is run. This allows the fuel to cool down, which stabilizes the evap pressure. When 5 hours have elapsed, the ecm turns on.

Toyota RAV4. Ecm / pcm internal engine off timer performance


Monitor description

5 Hours after the ignition switch is turned off, the soak timer activates the ecm to begin the evap system monitor. While the engine is running, the ecm monitors the synchronization of the soak timer and the cpu clock. If these two are not synchronized, the ecm interprets this as a malfunction, illuminates the mil and sets the dtc (2 trip detection logic).

Monitor strategy

Toyota RAV4. Monitor strategy


Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Toyota RAV4. Typical malfunction thresholds


Inspection procedure

Hint:

  1. Replace ecm

  1. Replace the ecm (see page es-429).


  1. Check whether dtc output recurs

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on.
  3. Turn the tester on.
  4. Clear dtcs (see page es-35).
  5. Start the engine and wait for 10 minutes or more.
  6. On the tester, select the following menu items: diagnosis / enhanced obd ii / dtc info / pending codes.
  7. If no pending dtc is displayed, the repair has been successfully completed.


Evaporative emission system switching valve control
Dtc summary Hint: The vent valve is built into the canister pump module. Description The description can be found in the evap (evaporative emission) system (see page es-335). Inspection ...

A/f sensor circuit slow response (bank 1 sensor 1)
Hint: Sensor 1 refers to the sensor mounted in front of the three-way catalytic converter (twc) and located near the engine assembly. Description Refer to dtc p2195 (see page es-292). M ...

Other materials:

Rear wiper rubber
Components Removal Remove rear wiper blade assembly Rotate and remove the cap as described in the "remove" procedures. Raise the arm and blade. Raise the wiper blade to the position where the claw detach with a ''click'' sound, as shown in the illustrat ...

Differential case
Components Disassembly Remove front differential ring gear Place the matchmarks on the ring gear and differential case. Remove the 14 bolts. Using a plastic-faced hammer, tap on the ring gear to remove it from the case. Remove front differential case ...

Check mode procedure
Panel diagnosis (indicator check) Turn the ignition switch to lock. Turn the ignition switch on while simultaneously pressing the a/c control auto switch and the rec/ frs switch. Check that all indicators and the display area are turned on and off 4 times in succession at 1 second ...

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