Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING HAND-HELD TESTER
1. Connect the hand-held tester (with CAN VIM) to the DLC3.
2. Turn the ignition switch ON and press the hand-held tester main switch ON.
3. Select the item below in the ACTIVE TEST and then check that the oscillator operates.
  Theft warning ECU:
  
  Fig 1: Hand-Held Tester Display Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK:

When the smart key is brought close to a door oscillator that is ON, the indicator on the smart key illuminates.

NG: Go to step 2

OK: Go to next step

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
INSPECT DOOR OSCILLATOR
1. Remove the door oscillator.
2. Measure the voltage between the terminals of the wire harness side connectors.
  Standard:
  
  Driver side
  
  Fig 2: Voltage Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side
  
  Fig 3: Voltage Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH
  
  Fig 4: Voltage Specifications (3 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH
  
  Fig 5: Voltage Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 6: Identifying Door Oscillator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: Go to step b

OK: Go to next step
CHECK WIRE HARNESS (DOOR OSCILLATOR - DOOR ECU)s (DOOR OSCILLATOR OR DOOR ECU - BODY GROUND)
1. Disconnect the D25, F17, R12 and R15 door ECU connectors.
2. Disconnect the D34, D35, D36 and D37 door oscillator connectors.
3. Measure the resistance between the wire harness side connectors.
  Standard:
  
  Driver side
  
  Fig 7: Resistance Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side
  
  Fig 8: Resistance Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH
  
  Fig 9: Resistance Specifications (3 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH
  
  Fig 10: Resistance Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 11: Identifying Wire Harness Door Oscillator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step
CHECK WIRE HARNESS (THEFT WARNING ECU - DOOR ECU) (THEFT WARNING ECU OR DOOR ECU - BODY GROUND)
1. Disconnect the T5 ECU connector.
2. Disconnect the D25, F17, R12 and R15 ECU connectors.
3. Measure the resistance between the wire harness side connectors.
  Standard:
  
  Driver side
  
  Fig 12: Resistance Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side
  
  Fig 13: Resistance Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH
  
  Fig 14: Resistance Specifications (3 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH
  
  Fig 15: Resistance Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 16: Identifying D25, F17, R12 And R15 ECU Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step
INSPECT DOOR ECU
1. Remove door ECU.
2. Measure the resistance.
  Standard:
  
  Driver side:
  
  Fig 17: Resistance Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side:
  
  Fig 18: Resistance Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH:
  
  Fig 19: Resistance Specifications (3 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH:
  
  Fig 20: Resistance Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 21: Identifying Door ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE DOOR ECU

OK: Go to next step
INSPECT DOOR OSCILLATOR
1. Measure the frequency of each terminal of the connectors.
  Standard:
  
  Driver side
  
  Fig 22: Frequency Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side
  
  Fig 23: Frequency Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH
  
  Fig 24: Frequency Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH
  
  Fig 25: Frequency Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE DOOR OSCILLATOR
  
  Fig 26: Identifying Door Oscillator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: Go to next step
  
  REPLACE THEFT WARNING ECU
2. CHECK WIRE HARNESS (DOOR OSCILLATOR - DOOR ECU)
  1. Disconnect the D25, F17, R12 and R15 door ECU connectors.
  2. Disconnect the D34, D35, D36 and D37 door oscillator connectors.
  3. Measure the resistance between the wire harness side connectors.
  Standard:
  
  Driver side
  
  Fig 27: Resistance Specifications (1 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Passenger side
  
  Fig 28: Resistance Specifications (2 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear LH
  
  Fig 29: Resistance Specifications (3 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Rear RH
  
  Fig 30: Resistance Specifications (4 Of 4)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 31: Identifying Wire Harness Door Oscillator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

REPLACE THEFT WARNING ECU