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:

Reassembly
1. INSTALL COOLER DRYER (a) Using needle nose pliers, install the cooler dryer. (b) Install a new O-ring on the cap. (c) Sufficiently apply compressor oil to the fitting surfaces of the O-ring and the cap. Compressor oil: ND-OIL 8 or equivalent (d) Using a hexagon wrench 14 mm ( ...

Short to B+ in Rear Curtain Shield Squib RH Circuit
DTC B1633/82 Short to B+ in Rear Curtain Shield Squib RH Circuit DESCRIPTION The rear curtain shield squib RH circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly RH. The circuit instructs the SRS to deploy when deployment conditions are met. DTC B ...

Perform zero point calibration of yaw rate and deceleration sensor (when using intelligent tester)
(a) Connect the intelligent tester to the DLC3. (b) Turn the ignition switch to the ON position. (c) Operate the intelligent tester to erase the codes (select "RESET MEMORY"). HINT: Refer to the intelligent tester operator's manual for further details. (d) Using the intell ...

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