Power Door Lock Control System: Inspection

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

W/Power window, inspect driver's door lock control switch continuity :
Master switch:

Fig 1: Identifying Driver's Door Lock Control Switch Terminals (W/Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying Driver's Door Lock Control Switch Terminal Specifications (W/Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
W/Power window, inspect passenger's door lock manual switch continuity :

Fig 3: Identifying Passenger's Door Lock Manual Switch Terminals (W/Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Passenger's Door Lock Manual Switch Terminal Specifications (W/Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
W/O Power window, inspect driver's and passenger's door lock manual switch continuity :

Fig 5: Identifying Passenger's & Driver's Door Lock Manual Switch Terminals (W/O Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Passenger's Door Lock Manual Switch Terminal Specifications (W/O Power Window)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Inspect door key lock and unlock switch continuity :

Fig 7: Identifying Door Key Lock & Unlock Switch Terminals & Test Positions
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 8: Front Left Side Door Key Lock & Unlock Switch Terminal Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
Inspect door unlock detection switch continuity :

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

Fig 10: Driver's Door Unlock Detection Switch Specifications Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the switch.
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 11: Testing Door Lock Motor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reverse the polarity and check that the door lock link moves to LOCK position.
  If operation is not as specified, replace the door lock assembly.
Using an ammeter, inspect door lock motor PTC thermistor operation :
1. Connect the negative (-) lead from the battery to terminal 2.
  
  Fig 12: Testing Door Lock Motor PTC Thermistor Using Ammeter (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the positive (+) lead from the ammeter to terminal 3 and the negative (-) lead to battery positive (+) 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.
  
  Fig 13: Testing Door Lock Motor PTC Thermistor Using Ammeter (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.
  If operation is not as specified, replace the door lock assembly.
Using an ammeter with a current-measuring probe, inspect door lock motor PTC thermistor operation :
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 2.
  
  Fig 14: Testing Door Lock Motor PTC Thermistor Using Ammeter W/Current Probe (1 Of 2)
  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 15: Testing Door Lock Motor PTC Thermistor Using Ammeter W/Current Probe (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the door lock assembly.
Inspect door lock control relay (integration relay) circuit :
Disconnect the connector from the integration relay and inspect the connector on the wire harness side, as shown in the chart.

Fig 16: Identifying Door Lock Control Relay (Integration Relay) Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 17: Door Lock Control Relay (Integration Relay) Terminal Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If circuit is as specified, inspect the door lock signal and key-off power window signal.

NOTE: When the relay circuit is as specified, inspect the door lock signal.

Door lock signal, inspect door lock control relay (integration relay) operation :
1. Connect the relay connector.
2. Connect the positive (+) lead from the voltmeter to terminal 8 and the negative (-) lead to terminal 7.
  
  Fig 18: Testing Door Lock Control Relay/Integration Relay (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Set the door lock control switch to UNLOCK and check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.
4. Reverse the polarity of the voltmeter leads.
5. Set the door lock control switch to LOCK and check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.
  
  Fig 19: Testing Door Lock Control Relay/Integration Relay (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If operation is not as specified, replace the relay.