Toyota Sienna Quiz
Seat

How to proceed with troubleshooting

In this manual: Seat
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
10steps
~60min
3/5difficulty
Done 0 of 10

HINT:

  • Use this procedure to troubleshoot the front power seat control system.
  • The intelligent tester should be used in steps 3 and 5.

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CHECK

3 CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

  1. Use the intelligent tester to check for normal function of the multiplex communication system.
  2. (Position control ECU and switch assembly (power seat control switch and ECU) not connected, communication line malfunctioning) If no code is output, proceed to A.
  3. (Position control ECU and switch assembly (power seat control switch and ECU) not connected, communication line malfunctioning) If any code is output, proceed to B.

4 PROBLEM SYMPTOMS TABLE

  1. If the fault is not listed on the problem symptoms table, proceed to A.
  2. If the fault is listed on the problem symptoms table, proceed to B.

5 OVERALL ANALYSIS AND TROUBLESHOOTING

  1. DATA LIST/ACTIVE TEST.
  2. Inspection with the intelligent tester (DATA LIST).
  3. Inspection with the intelligent tester (ACTIVE TEST).
  4. Terminals of ECU.
  5. Inspection.

6 ADJUST, REPAIR OR REPLACE

7 CONFIRMATION TEST

END

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