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Toyota Sienna Service Manual: How to proceed with troubleshooting

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS

  1. Interview the customer and confirm the trouble.
  1. Confirm the problem by duplicating the conditions described by the customer

3 BASIC INSPECTION

  1. Basic inspection.
  1. Measure the battery voltage.

    Standard voltage: 11 to 14 V

  1.  with Navigation system: Check the power supply to the radio and navigation assembly.
  1.  Turn the ignition switch to the ACC position.
  2.  Check whether the display appears on the radio and navigation assembly.
  1.  without Navigation system: Check the power supply to the radio receiver.
  1. Turn the ignition switch to the ACC position.
  2.  Check whether the display appears on the radio receiver

4 PROBLEM SYMPTOMS TABLE

  1. Refer to the problem symptoms table

5 CIRCUIT INSPECTION AND PART INSPECTION

6 IDENTIFICATION OF PROBLEM

7 REPAIR OR REPLACE

8 CONFIRMATION TEST

END

System description
1. OUTLINE  As a unique feature of Rear Seat Entertainment (RSE) system, the front and rear seat occupants can enjoy different audio-visual modes at the same time. Thus, this system o ...

Problem symptoms table
HINT: Inspect the "Fuse" and "Relay" before confirming the suspected area as shown in the table below. DISPLAY FUNCTION: SOUND FUNCTION: REMOTE CONTROL FUNCTION: ...

Other materials:

Removal
1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 seconds after disconnecting the cable to prevent the airbag working. 3. REMOVE STEERING WHEEL NO.3 COVER LOWER  Using a ...

Mass or Volume Air Flow Circuit
DESCRIPTION The Mass Air Flow (MAF) meter is a sensor that measures the amount of air flowing through the throttle valve. The ECM uses this information to determine the fuel injection time and to provide appropriate airfuel ratio. Inside the MAF meter, there is a heated platinum wire whic ...

Removal
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (See page AC-172) 2. REMOVE NO. 2 AIR CLEANER INLET (See page EM- 28) 3. REMOVE FRONT BUMPER ASSEMBLY (See page ET-3) 4. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY (a) Remove the bolt and disconnect the discharge hose sub-assembly from the coo ...

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