Problem Symptoms Table

2004 Toyota Celica GT, StandardSECTION Problem Symptoms Table
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS REFERENCE

Symptom Suspect Area See Section
All function does not operate.
(Both left and right)
  1. ECU power source circuit
  2. Driver seat ECU
  1. CIRCUIT INSPECTION 
  2. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Slide operation" does not operate.
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. POWER SEAT MOTOR 
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Front vertical operation" does not operate.
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. POWER SEAT MOTOR 
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Lifter operation" does not operate.
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. POWER SEAT MOTOR 
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Reclining operation" does not operate.
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. POWER SEAT MOTOR 
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Headrest operation" does not operate.
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. POWER SEAT MOTOR 
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Seat cushion operation" does not operate.
  1. Seat cushion switch circuit
  2. Motor circuit
  3. Position sensor circuit
  4. Driver seat ECU
  1. POWER SEAT CUSHION SWITCH CIRCUIT 
  2. POWER SEAT MOTOR 
  3. POSITION SENSOR CIRCUIT 
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Seat position memory return function does not operate.
  1. Power seat memory switch circuit
  2. Position sensor circuit
  3. Driver seat ECU
  1. DRIVING POSITION MEMORY SWITCH CIRCUIT (W/ MEMORY)
  2. POSITION SENSOR CIRCUIT 
  3. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
"Lumbar support operation" does not operate.
  1. Lumbar support switch circuit
  2. Motor circuit
  3. Position sensor circuit
  4. Driver seat ECU
  1. LUMBAR SUPPORT SWITCH AND MOTOR CIRCUIT 
  2. POWER SEAT MOTOR 
  3. POSITION SENSOR CIRCUIT 
  4. HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.