Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM)
1. Turn the ignition switch off.
2. Disconnect the E6 connector of the ECM.
  
  Fig 1: Disconnecting E6 Connector Of ECM
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Identifying TC Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in Fig 3 .
  Standard:
  
  Fig 3: Resistance Of TC Of DLC3 Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC of DLC3 - ECM)
OK: Go to next step.
CHECK HARNESS AND CONNECTOR (TC of DLC3 - BODY GROUND)
1. Measure the resistance according to the value(s) in Fig 5 .
  
  Fig 4: Identifying TC Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 5: Resistance Between TC & Body Ground Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE WIRE HARNESS OR EACH ECU (TC CIRCUIT)
  
  OK: Go to next step.
CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND)
1. Measure the resistance according to the value(s) in Fig 7 .
  
  Fig 6: Identifying CG Of DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 7: Resistance Between CG & Body Ground Specification Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CG of DLC3 - BODY GROUND)
OK: REPLACE ECM (SEE REPLACEMENT )