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:

Steering Pad Switch Circuit
DESCRIPTION This circuit sends an operation signal from the steering pad switch to the radio receiver. If there is an open in the circuit, the audio system cannot be operated using the steering pad switch. If there is a short in the circuit, the same condition as that when the switch is ...

Reclining Motor Circuit
DESCRIPTION The fold seat control ECU receives a switch operation signal from the power rear no. 2 seat switch and the fold seat switch, and activates the reclining motor. At this time, the Hall IC (seatback position sensor) detects the actuation of the seatback and sends a seatback actuation ...

In the vicinity of the center console
Control Display Hazard warning system Intelligent Safety Ventilation Glove compartment Automatic climate control Radio/multimedia, see Owner's Manual for Navigation, Entertainment, and Communication Controller with buttons Parking brake Automatic Hold Driving Dynamics Control SPO ...

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