Toyota RAV4 manuals

Toyota Sienna Service Manual: How to proceed with troubleshooting

HINT: Troubleshoot in accordance with the procedures on the following pages.

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK

3 INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)

  1. Use the intelligent tester to check for normal function of the multiplex communication system.
  1. (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A.
  2. (ECU unconnected, communication line malfunctioning) With code outputs, proceed to B.

4 DTC CHECK

  1. Check for a diagnostic trouble code.
  1. Without code outputs, proceed to A.
  2. With code outputs, proceed to B.

5 PROBLEM SYMPTOMS TABLE

  1. When problem is not listed on problem symptoms table, proceed to A.
  2. When problem is listed on problem symptoms table, proceed to B.

6 PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM

  1. Data List / Active Test .
  2. Operation check .
  3. Inspection.
  4. Terminals of ECU

7 ADJUST, REPAIR OR REPLACE

8 RESET POWER BACK DOOR SYSTEM

9 CONFIRMATION TEST

END

Power back door system
PARTS LOCATION ...

Operation check
NOTICE: Inspection should be started after conforming that the items listed in the "CUSTOMIZE PARAMETER" for the power back door system have defaulted to the initial settings 1. CHECK ...

Other materials:

Park / Neutral Position Switch Circuit
DESCRIPTION The clearance warning ECU receives the reverse or park position signal from the park / neutral position switch. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT CLEARANCE WARNING ECU Disconnect the C9 connector from the clearance warning ECU.  Measure the voltage ...

Heater relay (for rear air conditioning system)
ON-VEHICLE INSPECTION 1. INSPECT REAR HEATER RELAY (a) Remove the rear heater relay. (b) Measure the resistance according to the value(s) in the table below. Standard resistance If the resistance is not as specified, replace the rear heater relay. ...

Terminals of ECU
1. INSTRUMENT PANEL JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)  Disconnect the B6, B7 and B9 ECU connectors. Disconnect the 1A, 1C, 1K, 1L and 1P J/B connectors. Check the voltage or resistance according to the value(s) in the table below (wire harness side connector). ...

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