Toyota RAV4 manuals

Toyota Sienna Service Manual: Problem symptoms table

WINDOW DEFOGGER SYSTEM

Symptom

Suspected area

w/ Deicer: Front window deicer does not operate.

(indicator light ON)

  1. FR DEF fuse
  2. Front window deicer relay
  3. Front window deicer wire
  4. Wire harness
w/ deicer: Front window deicer does not operate.

(indicator light OFF)

  1. FR DEF fuse
  2. Front window deicer relay
  3. Front window deicer wire
  4. Hazard warning signal switch assembly (Defogger switch)
  5. Wire harness
Rear window defogger does not operate (indicator light ON)
  1. HTR fuse
  2. Rear window defogger relay
  3. Rear window deicer wire
  4. Rear window defogger does not operate (indicator light OFF)Wire harness
Rear window defogger does not operate (indicator light OFF)
  1. HTR fuse
  2. Rear window defogger relay
  3. Hazard warning signal switch assembly (Defogger switch)
  4. Rear window defogger wire
  5. Wire harness
w/ Mirror Heater: Mirror heater does not operate (indicator light ON
  1. MIR HTR fuse
  2. Outer rear view mirror assembly
  3. Wire harness
w/ Mirror Heater: Mirror heater does not operate (indicator light OFF)
  1. MIR HTR fuse
  2. Hazard warning signal switch assembly (Defogger switch)
  3.  Outer rear view mirror assembly
  4. Wire harness
Window defogger system
PARTS LOCATION ...

On-vehicle inspection
1. INSPECT BACK WINDOW (DEFOGGER WIRE) NOTICE:  When cleaning the glass, wipe the glass along the wire using a soft and dry cloth. Take care not to damage the wires.  Do not u ...

Other materials:

Data list / active test
1. USING INTELLIGENT TESTER  Connect the intelligent tester to the DLC3.  Monitor the ECU data by following the prompts on the tester screen. HINT: The intelligent tester has a "Snapshot" function which records the monitored data. Refer to the intelligent tester ope ...

System description
1. GENERAL  The dynamic laser cruise control system has two cruise control modes: the constant speed control mode and vehicle-to-vehicle distance control mode.  The vehicle-to-vehicle distance control mode is always selected when starting the dynamic laser cruise control ...

Diagnosis system
1. CHECK DLC3  The ECU uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not opera ...

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