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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:

Problem symptoms table
When a "Normal" code is output during a DTC check but the problem still occurs, use the Problem Symptoms Table. The suspected areas (circuits or parts) for each problem symptoms are in the table. The suspected areas are listed in order of probability. A description of each of the char ...

IG Power Source Circuit
DESCRIPTION The main power source is supplied to the A/C amplifier when the ignition switch is turned to the ON position. The power source is used for operating the A/C amplifier and servo motor, etc. WIRING DIAGRAM INSPECTION PROCEDURE HINT: Start the engine before inspection. Check ...

Power slide door warning buzzer
INSPECTION 1. INSPECT POWER SLIDE DOOR WARNING BUZZER LH Check the resistance of the buzzer. Resistance If the result is not as specified, replace the buzzer. NOTICE: The circuit that causes the buzzer to sound is built into the slide door ECU, not around the buzzer. Direct ...

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