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Toyota Sienna Service Manual: How to proceed with troubleshooting

Toyota Sienna Service Manual / Meter / Meter / gauge system / How to proceed with troubleshooting

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS

3 CHECK BODY MULTIPLEX COMMUNICATION SYSTEM

  1. Check for DTC output

4 PROBLEM SYMPTOM CONFIRMATION

5 PROBLEM SYMPTOMS TABLE

6 CIRCUIT INSPECTION

7 REPAIR OR REPLACE

8 CONFIRMATION TEST

END

Precaution
1. REMOVAL AND INSTALLATION OF THE BATTERY TERMINAL  Before performing electrical work, disconnect the battery negative (-) terminal in order to prevent a short in the system.   ...

Customize parameters
1. Seat Belt Buzzer ON/OFF Setting The seat belt buzzer ON/OFF setting, which is a setting of the buzzer function of the combination meter, can disable the driver side seat belt buzzer and front p ...

Other materials:

On-vehicle inspection
1. INSPECT FRONT PASSENGER AIRBAG ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check.  With the front passenger airbag assembly installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the instrumen ...

Lumbar support adjuster assembly
INSPECTION 1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY  Check operation of the lumbar support adjuster motor.  Check if the lumbar support adjuster moves smoothly when the battery is connected to the lumbar support adjuster motor connector terminal. OK If the r ...

System Too
DESCRIPTION The fuel trim is related to the feedback compensation value, not to the basic injection time. The fuel trim consists of both the short-term and long-term fuel trims. The short-term fuel trim is fuel compensation that is used to constantly maintain the air-fuel ratio at stoich ...

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