Toyota RAV4 manuals

Toyota Sienna Service Manual: Problem symptoms table

HINT: Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

SEAT HEATER SYSTEM

Symptom

Suspected area

Seat heaters do not operate (Seat does not warmed up)
  1. S-HTR fuse
  2. ECU-IG fuse
  3. IG1 relay
  4. Front seat cushion heater assembly
  5. Front seat cushion heater assembly
  6. Front seatback heater assembly
  7. Front seatback heater assembly
  8.  Seat heater switch
  9.  Seat heater switch
  10.  Seat heater control
  11. Wire harness
Temperature of seat heater cannot be adjusted
  1. Seat heater switch
  2. Seat heater switch
  3. Seat heater control
  4. Wire harness
Seat heater system
PARTS LOCATION ...

On-vehicle inspection
1. CHECK SEAT HEATER CONTROL (WIRE HARNESS SIDE)  Disconnect the connector from the seat heater control.  Measure the voltage and resistance of each terminal of the wire harne ...

Other materials:

Installation
1. Install transmission valve body assembly (a) Install the shift solenoid valve SL1 to the valve body assembly with the bolt. Torque: 6.6 N*m (67 kgf*cm, 58 in.*lbf) (b) Install the shift solenoid valve SL2 to the valve body assembly with the bolt. Torque: 11 N*m (110 kgf*cm, 8 ft ...

On-vehicle inspection
1. INSPECT CENTER AIRBAG SENSOR ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnosis system check. 2. INSPECT CENTER AIRBAG SENSOR ASSEMBLY (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT DEPLOYED)  Perform a diagnosis system check. 3. INSPECT CENTER AIRBAG ...

Open in Occupant Classification ECU Battery Positive Line
DTC B1794 Open in Occupant Classification ECU Battery Positive Line DESCRIPTION This circuit consists of the occupant classification ECU and the power source circuit (battery, fuse, wire harness). DTC B1794 is recorded when a malfunction is detected in the occupant classification ECU or t ...

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