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Problem Symptoms Table

PROBLEM SYMPTOMS CHART

Symptom Suspect Area Refer To
All function does not operate (Both left and right)
  1. ECU power source circuit
  2. Driver seat ECU
 Power Source Circuit 
 
"Slide operation" does not operate
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
 Power Seat Motor 
Position Sensor Circuit 
 
"Front vertical operation" does not operate
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
 Power Seat Motor 
Position Sensor Circuit 
 
"Lifter operation" does not operate
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
 Power Seat Motor 
Position Sensor Circuit 
 
"Reclining operation" does not operate
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
 Power Seat Motor 
Position Sensor Circuit 
 
"Headrest operation" does not operate
  1. Motor circuit
  2. Position sensor circuit
  3. Driver seat ECU
 Power Seat Motor 
Position Sensor Circuit 
 
"Seat cushion operation" does not operate
  1. Seat cushion switch circuit
  2. Motor circuit
  3. Position sensor circuit
  4. Driver seat ECU
 Power Seat Cushion Switch Circuit 
Power Seat Motor 
Position Sensor Circuit 
 
Seat position memory return function does not operate
  1. Power seat memory switch circuit
  2. Position sensor circuit
  3. Driver seat ECU
 DRIVING POSITION MEMORY SWITCH CIRCUIT (W/MEMORY) under CIRCUIT INSPECTION in DRIVER DOOR CONTROL SYSTEM - DIAGNOSTICS - LS 430
Position Sensor Circuit 
 
"Lumbar support operation" does not operate
  1. Lumbar support switch circuit
  2. Motor circuit
  3. Position sensor circuit
  4. Driver seat ECU
 LUMBAR SUPPORT SWITCH & Motor Circuit 
Power Seat Motor 
Position Sensor Circuit 
 
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