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Toyota Sienna Service Manual: How to proceed with troubleshooting

Toyota Sienna Service Manual / Audio / visual / Audio and visual system / How to proceed with troubleshooting

1 VEHICLE BROUGHT TO WORKSHOP

2 INSPECT BATTERY VOLTAGE

Standard voltage: 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3 BASIC INSPECTION

  1. Turn the ignition switch ON.
  2.  Check whether or not the radio receiver turns on.

Result

Result

4 CHECK FOR DTC

  1. Check for DTCs and note any codes that are output.
  2.  Delete the DTCs.
  3.  Recheck for DTCs by simulating the operation indicated by the DTCs.

HINT:

Result

Result

5 DIAGNOSTIC TROUBLE CODE CHART

Find the output code on the diagnostic trouble code chart

6 PROBLEM SYMPTOMS TABLE

Refer to the problem symptoms table

Result

Result

7 OVERALL ANALYSIS AND TROUBLESHOOTING

  1. Terminals of ECU

8 ADJUST, REPAIR OR REPLACE

9 CONFIRMATION TEST

END

System diagram
1. DISC PLAYER OUTLINE  A CD player uses a laser pickup to read digital signals recorded on CDs. By converting the digital signals to analog, music and other content can be played. C ...

Identification of noise source
1. Radio Description  Radio frequency band  Radio broadcasts use the radio frequency bands shown in the table below. Service area  The service areas of A ...

Other materials:

Open or Short Circuit in ABS Motor Relay Circuit
DESCRIPTION The ABS motor relay supplies power to the ABS pump motor. While the ABS & TRAC & VSC are activated, the ECU switches the ABS motor relay ON and operates the ABS pump motor. WIRING DIAGRAM INSPECTION PROCEDURE 1 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (AB ...

Evaporative Emission Control System Leak Detected
DTC P0455 Evaporative Emission Control System Leak Detected (Gross Leak) DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak) DTC SUMMARY DESCRIPTION The circuit description can be found in the EVAP (Evaporative Emission) System. INSPECTION PROCEDURE Refer to t ...

Cranking Holding Function Circuit
DESCRIPTION The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter until the ECM judges that the engine has started successfully. The purpose is to reduce the holding time of the ignition key. WIRING DIAGRAM Refer to DTC P0617. INSPECTI ...

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