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Problem Symptoms Tables

POWER WINDOW CONTROL SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
All the power window does not operate.
  1. 3. Power source circuit
  2. 4. Power window switch circuit
  3. 5. Driver door ECU
 Power source circuit 
DTC B1221: Power window switch circuit on driver door, DTC B1222: Door lock switch circuit on driver door 
 
Driver side power window does not operate.
  1. Power window motor circuit
  2. Driver door ECU
 Power window motor circuit 
 
Jam protection function and auto up or down function does not operate.
  1. Jam protection limit switch circuit
  2. Jam protection pulse switch circuit
  3. Driver door ECU
  4. Theft deterrent ECU
 DTC B1231: Jam protection limit switch circuit on driver door 
DTC B1232: Jam protection pulse switch circuit on driver door 
 
 
Window lock function does not operate.
  1. Power window switch circuit
  2. Driver door ECU
 DTC B1221: Power window switch circuit on driver door, DTC B1222: Door lock switch circuit on driver door 
 
Remote control of all windows (Except driver side) does not operate with master switch. (Window operates normally with each of master switch.)
  1. Power window switch circuit
  2. Driver door ECU
 DTC B1221: Power window switch circuit on driver door, DTC B1222: Door lock switch circuit on driver door 
 
The key related power window operations cannot be done with driver door key cylinder. (Master switch operation is normal.)
  1. Door key lock and unlock switch circuit
  2. Inspect door lock control system
  3. Power window switch circuit
  4. Driver door ECU
 DOOR KEY LOCK & unlock switch circuit 
See POWER DOOR LOCK CONTROL SYSTEM - LS 430 article).
DTC B1221: Power window switch circuit on driver door, DTC B1222: Door lock switch circuit on driver door 
 
Power window does not operate with keyless entry transmitter. (Windows operate normally with master switch.)
  1. Inspect wireless door lock control system
  2. Replace driver door ECU
  3. Theft deterrent ECU
 See WIRELESS DOOR LOCK CONTROL SYSTEM - LS 430 article.
 
 
Window moves down without being ordered during the up operation.
  1. Jam protection limit switch circuit
  2. Power window motor circuit
  3. Is the window regulator installed correctly?
  4. Driver door ECU
 DTC B1231: Jam protection limit switch circuit on driver door 
Power window motor circuit 
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POWER DOOR LOCK CONTROL SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
All the doors can not be locked or unlocked.
  1. Power source circuit
  2. Theft deterrent ECU
  3. Driver door ECU
 Power source circuit 
 
 
Driver side door lock does not operate.
  1. Door lock motor circuit
  2. Driver door ECU
  3. Theft deterrent ECU
 Door lock motor circuit 
 
 
Door key related function cannot be done.
  1. Door lock switch circuit
  2. Door courtesy light and courtesy switch circuit
  3. Theft deterrent ECU
  4. Driver door ECU
 DOOR KEY LOCK & unlock switch circuit 
DOOR COURTESY LIGHT & courtesy switch circuit 
 
 
Key confinement prevention function does not operate.
  1. Door courtesy light and courtesy switch circuit
  2. Door unlock detection switch circuit
  3. Theft deterrent ECU
  4. Driver door ECU
 DOOR COURTESY LIGHT & courtesy switch circuit 
Door unlock detection switch circuit 
 
 
DOOR CLOSER SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
All the doors door closer system does not operate.
  1. Power source circuit
  2. Driver door ECU
 Power source circuit 
 
Driver side door closer does not operate.
  1. Door closer switch circuit
  2. Door closer position switch circuit
  3. Door closer cam position switch circuit
  4. Driver door ECU
 DTC B2211: Door Closer Motor Malfunction on Driver Door 
Door closer position switch circuit 
DTC B2211: Door Closer Motor Malfunction on Driver Door 
 
POWER MIRROR CONTROL SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Both right and left mirrors do not operate.
  1. Mirror switch circuit
  2. Driver side J/B ECU
  3. Driver door ECU
 See MIRROR SWITCH CIRCUIT under CIRCUIT INSPECTION in DRIVER SIDE JUNCTION BLOCK (BODY NO. 2) CONTROL SYSTEM - DIAGNOSTICS - LS 430 article.
 
 
Only one side of mirror does not operate.
  1. Mirror motor circuit
  2. Mirror position sensor circuit (w./memory)
  3. Driver door ECU
 Mirror motor circuit 
Mirror position sensor circuit (w/memory) 
 
Retract mirror does not operate.
  1. Retract mirror switch
  2. Retract motor circuit
  3. Driver door ECU
 MIRROR RETRACT SWITCH CIRCUIT under CIRCUIT INSPECTION in DRIVER SIDE JUNCTION BLOCK (BODY NO. 2) CONTROL SYSTEM - DIAGNOSTICS - LS 430 article.
Retract motor circuit 
 
Driving position memory system does not operate.
  1. Mirror position sensor circuit
  2. Driver door ECU
 Mirror position sensor circuit (w/memory) 
 
MIRROR DEFOGGER SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Mirror defogger system does not operate.
  1. Mirror defogger circuit
  2. Driver door ECU
 Mirror defogger circuit 
 
AUTOMATIC GLARE-RESISTANT EC MIRROR SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Automatic glare-resistant EC mirror system does not operate.
  1. Electro chromic mirror circuit
  2. Driver door ECU
 Electro chromic mirror circuit 
 
ILLUMINATION LIGHT SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Door courtesy light does not light up.
  1. Door courtesy light and courtesy switch circuit
  2. Driver door ECU
 DOOR COURTESY LIGHT & courtesy switch circuit 
 
Outer foot light does not light up (in outer mirror).
  1. Outer foot light circuit
  2. Driver door ECU
 Outer foot light circuit 
 
Inside handle illumination does not light up.
  1. Inside handle illumination circuit
  2. Driver door ECU
 Inside handle illumination circuit 
 
POWER SHOULDER BELT ANCHORAGE SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Power shoulder belt anchorage system does not operate.
  1. Shoulder belt adjust switch circuit
  2. Driver door ECU
 Shoulder belt adjust switch circuit 
 
POWER SEAT CONTROL SYSTEM PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Driving position memory system does not operate.
  1. Memory switch circuit (w/memory)
  2. Power seat control ECU
  3. Driver door ECU
 Driving position memory switch circuit (W/memory) 
 
 
OTHERS PROBLEM SYMPTOMS INDEX

Symptom Suspect Area Refer To
Light auto turn off system does not sound a buzzer.
  1. Door courtesy light and courtesy switch circuit
  2. Driver side J/B ECU
  3. Driver door ECU
 DOOR COURTESY LIGHT & courtesy switch circuit 
 
 
Key remainder system does not sound a buzzer.
  1. Door courtesy light and courtesy switch circuit
  2. Combination meter ECU
  3. Driver door ECU
 DOOR COURTESY LIGHT & courtesy switch circuit 
 
 
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