Power Door Lock Control System: Inspection

WARNING: This page is about a different car, the 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Master Switch: Inspect Driver's Door Lock Control Switch Continuity

Fig 1: Identifying Driver's Door Lock Control Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying Driver's Door Lock Control Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Inspect Passenger's Door Lock Control Switch Continuity

Fig 3: Identifying Passenger's Door Lock Control Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Identifying Passenger's Door Lock Control Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Inspect Door Key Lock And Unlock Switch Continuity

Fig 5: Identifying Door Key Lock & Unlock Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Identifying Door Key Lock And Unlock Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch
Front Door: Inspect Door Unlock Detection Switch Continuity

Fig 7: Identifying Door Unlock Detection Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 8: Identifying Door Unlock Detection Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Rear Door: Inspect Door Unlock Detection Switch Continuity

Fig 9: Identifying Door Unlock Detection Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 10: Identifying Door Unlock Detection Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Back Door: Inspect Door Unlock Detection Switch Continuity

Fig 11: Identifying Door Unlock Detection Switch Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 12: Identifying Door Unlock Detection Switch Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Front Door: Inspect Door Lock Motor Operation
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, and check that the door lock link moves to UNLOCK position.
  
  Fig 13: Testing Door Lock Motor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check that the door lock link moves to LOCK position.
  
  Fig 14: Testing Door Lock Motor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Rear Door: Inspect Door Lock Motor Operation
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, and check that the door lock link moves to UNLOCK position.
  
  Fig 15: Testing Door Lock Motor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check that the door lock link moves to LOCK position.
  
  Fig 16: Testing Door Lock Motor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Back Door: Inspect Door Lock Motor Operation
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2, and check that the door lock link moves to UNLOCK position.
  
  Fig 17: Testing Door Lock Motor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check that the door lock link moves to LOCK position.
  
  Fig 18: Testing Door Lock Motor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Front Door: Inspect PTC Thermistor Operation (Using An Ammeter)
1. Connect the negative (-) lead from the battery to terminal 2.
  
  Fig 19: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the positive (+) lead from the ammeter to terminal 3 and the negative (-) lead to battery negative (-) terminal, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3, and check that the door lock moves to the LOCK position.
  
  Fig 20: Displaying PTC Thermistor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Rear Door: Inspect PTC Thermistor Operation (Using An Ammeter)
1. Connect the negative (-) lead from the battery to terminal 2.
  
  Fig 21: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the positive (+) lead from the ammeter to terminal 3 and the negative (-) lead to battery negative (-) terminal, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3, and check that the door lock moves to the LOCK position.
  
  Fig 22: Testing PTC Thermistor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Back Door: Inspect PTC Thermistor Operation (Using An Ammeter)
1. Connect the negative (-) lead from the battery to terminal 2.
  
  Fig 23: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the positive (+) lead from the ammeter to terminal 3 and the negative (-) lead to battery negative (-) terminal, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 3, and check that the door moves to the LOCK position.
  
  Fig 24: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Front Door: Inspect PTC Thermistor Operation (Using An Ammeter With A Current-Measuring Probe)
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2.
  
  Fig 25: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, reverse the polarity, and check that the door lock moves to the LOCK position.
  
  Fig 26: Testing PTC Thermistor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Rear Door: Inspect PTC Thermistor Operation (Using An Ammeter With A Current-Measuring Probe)
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2.
2. Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
  
  Fig 27: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, reverse the polarity, and check that the door lock moves to the LOCK position.
  
  Fig 28: Testing PTC Thermistor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Back Door: Inspect PTC Thermistor Operation (Using An Ammeter With A Current-Measuring Probe)
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2.
  
  Fig 29: Testing PTC Thermistor (Unlock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead, and check that the current changes from approximately 3.2 A to less than 0.5 A within 20 to 70 seconds.
3. Disconnect the leads from terminals.
4. Approximately 60 seconds later, reverse the polarity, and check that the door lock moves to the LOCK position.
  
  Fig 30: Testing PTC Thermistor (Lock)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Inspect Door Lock Relay (Lock And Unlock) Continuity

Fig 31: Identifying Door Lock Relay Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 32: Identifying Door Lock Relay Test Results
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the relay.