Toyota RAV4 manuals

Toyota Sienna Service Manual: Check for intermittent problems


HINT: For use of the intelligent tester only: Inspect the vehicle's ECM using check mode.

Intermittent problems are easier to detect with an intelligent tester when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

  1. Clear the DTCs.
  2.  Switch the ECM from normal mode to check mode using an intelligent tester.
  3.  Perform a simulation test.
  4.  Check and wiggle the harness(es), connector(s) and terminal(s)
How to proceed with troubleshooting
HINT: The intelligent tester can be used in steps 2, 3, 4, 6 and 9. 1 VEHICLE BROUGHT TO WORKSHOP 2 CONNECT INTELLIGENT TESTER TO DLC3 HINT: If the display indicates a communication fault in the ...

Basic inspection
When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic ...

Other materials:

Selecting the audio source
Switching between audio sources such as radio and CD are explained in this section. Changing audio source Press the “AUDIO” button to display the audio source selection screen. If the audio source selection screen is not displayed, press the “AUDIO” button again. Select the des ...

1. INSTALL TRANSMISSION CONTROL CABLE ASSEMBLY (a) Pull in the control cable to the body. (b) Install the cable end, as shown in the illustration. (c) When installing the transmission control cable assembly on the shift lever plate, place the projection of the shift cable downward to ...

No. 1 Clearance Warning Buzzer Circuit
DESCRIPTION The clearance warning ECU receives the ultrasonic sensor signal to sound the front warning buzzer. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT FRONT BUZZER Remove the clearance warning ECU with front buzzer.  Apply the battery voltage to the terminals 1 and 2 o ...

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