Toyota RAV4 manuals

Toyota Sienna Service Manual: Check mode procedure

HINT: Intelligent tester only: Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect the malfunctions that cannot be detected by normal mode.

NOTICE: All the stored DTCs and freeze frame data are erased if:

  1.  the ECM is changed from normal mode to check mode or vice versa; or 2) the ignition switch is turned off or turned to the ACC position from the ON position while in check mode.

    Before changing modes, always check and make a note of any DTCs and freeze frame data.

1. CHECK MODE PROCEDURE (Using an intelligent tester)

CHECK MODE PROCEDURE (Using an intelligent tester)

  1.  Check and ensure the following conditions:
  1.  Battery voltage 12 V or more
  2.  Throttle valve fully closed
  3.  The shift lever in the P or N position
  4.  A/C switched OFF
  1.  Turn the ignition switch off.
  2.  Connect an intelligent tester to the DLC3.
  3.  Turn the ignition switch to the ON position.
  4.  Turn the tester ON.
  5.  Select the following menu items: DIAGNOSIS / ENHANCED OBD II / CHECK MODE.
  6.  Switch the ECM from normal mode to check mode.
  7.  Make sure that the MIL flashes as shown in the illustration.
  8.  Start the engine.
  9.  Make sure that the MIL goes off.
  10.  Simulate the conditions of the malfunction described by the customer.
  11.  Check for DTCs and freeze frame data using the tester.
Freeze frame data
1. DESCRIPTION  The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in dete ...

Fail-safe chart
If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily. HINT:  *1: The vehicle can be driven slowly when the accelerator ped ...

Other materials:

Occupant Classification ECU Malfunction
DTC B1795 Occupant Classification ECU Malfunction DESCRIPTION DTC B1795 is recorded when a malfunction is detected in the occupant classification ECU. Troubleshoot DTC B1771 first when the DTCs B1771 and B1795 are output simultaneously. WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK DTC ...

How to proceed with troubleshooting
HINT:  Use these procedures to troubleshoot the power door lock control system.  The intelligent tester should be used in steps 4 and 5. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS CHECK HINT:  In troubleshooting, confirm that the problem symptoms have ...

Removal
HINT: For the parking brake cable assembly No. 2, perform the same procedure to the parking brake cable assembly No. 3. 1. REMOVE REAR WHEEL 2. REMOVE REAR BRAKE DRUM SUB-ASSEMBLY (for Drum Type) (See page BR-37) 3. REMOVE FRONT BRAKE SHOE (for Drum Type) (See page BR-37) 4. REMOVE REAR BRAK ...

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