Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: 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:

Installation
Install camshaft position sensor Notice: Make sure that the o-ring is not cracked or jammed when installing it. Apply a light coat of engine oil to the o-ring of the sensor. Install the sensor with the bolt. Torque: 9.0 N*m (90 kgf*cm, 80 in.*Lbf) Connect the sensor co ...

Starter relay circuit high
Description While the engine is being cranked, the positive battery voltage is applied to terminal sta of the ecm. If the ecm detects the starter control (sta) signal while the vehicle is being driven, it determines that there is a malfunction in the sta circuit. The ecm then illuminates ...

Ecu power source circuit
Description This is the power source for the tire pressure warning ecu. Wiring diagram Inspection procedure Notice: It is necessary to register an id code after replacing the tire pressure monitor valve and/or the tire pressure warning ecu (see page tw-9). Inspect fuse (ecu-ig1) ...

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