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:

Open in occupant classification ecu battery positive line
Description Dtc b1794 is set when a malfunction is detected in the occupant classification ecu battery positive line. Wiring diagram Inspection procedure Check for dtc Turn the ignition switch on. Clear the dtcs (see page rs-249). Hint: First clear dtcs stored in the ...

Brake switch "B" circuit high
Description The purpose of this circuit is to prevent the engine from stalling while driving in the lock-up condition when the brakes are suddenly applied. When the brake pedal is depressed, this switch sends a signal to the ecm. Then the ecm cancels the operation of the lock-up clutch ...

How to proceed with troubleshooting
Hint: Use these procedures to troubleshoot the lighting system. *: Use the intelligent tester. Vehicle brought to workshop Inspect battery voltage Standard voltage: 11 to 14 v If the voltage is below 11 v, recharge or replace the battery before proceeding. Refer to pr ...

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