Section 945 (Engine Immobilizer System - Diagnosis): Pre-Check

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

DTC CHECK (Using LEXUS hand-held tester)
1. Prepare the LEXUS hand-held tester.
2. Connect the LEXUS hand-held to DLC3.
3. Turn the ignition switch ON and the LEXUS hand-held tester main switch ON.
4. Use the LEXUS hand-held tester to check the DTCs, note them down. (For opening instructions, see the LEXUS hand-held tester's instruction book).
5. See DIAGNOSTIC TROUBLE CODE CHART , to confirm the details of the DLC3.
  
  Fig 1: Connecting Hand-Held To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC CLEARANCE
- PRESENT CODE:
  DTC will be cleared when the trouble output as DTC is recovered normally. PAST
- CODE:
  Clear it using the LEXUS hand-held tester.