Retrieving Diagnostic Trouble Codes
WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Always record DTCs during retrieval.
NOTE:
An OBD II scan tool complying with SAE J1978 can be used if Lexus hand-held tester is not available.
- See scan tool operator's manual for specific operating instructions. Connect scan tool to DLC3 located under left side of instrument panel. See Fig 1. If scan tool cannot communicate with DLC3 diagnostic line when ignition is turned on and scan tool is operated, there is a problem either on the vehicle side or tool side of the link. If communication can be established when scan tool is connected to another vehicle, inspect diagnostic circuit of DLC3 of original vehicle. If communication is still impossible when scan tool is connected to another vehicle, problem is probably in scan tool itself. Consult the Service Department listed in the tool's instruction manual. When communication is established, use scan tool to retrieve DTCs. See tester operator's manual for specific operating instructions. Retrieve and record DTCs. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES .
- Operate system for which the complaint was recorded to see if fault can be recreated. If same DTC is displayed and fault is present, problem is current in diagnostic circuit, diagnose and repair DTC. See DIAGNOSTIC TROUBLE CODE INDEX table. If same DTC is not received and no symptoms are present, original DTC was a history code signifying that problem may have occurred in the wire harness or connector some time in the past or is a secondary problem. Check connectors for loose, damaged or corroded terminals. If same DTC is not received, but fault is still present, problem is still occurring somewhere other than current diagnostic circuit. Diagnose and repair problem based on existing symptoms as follows:
- For symptoms related to engine performance, see TROUBLE SHOOTING - NO CODES article in ENGINE PERFORMANCE.
- For symptoms related to door control system, see POWER DOOR LOCKS, TRUNK LID & FUEL DOOR RELEASE article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT, and/or POWER MIRRORS under MIRRORS article in ACCESSORIES & EQUIPMENT.
- For symptoms related to theft deterrent system, see ANTI-THEFT SYSTEMS article under DOOR LOCKS & ANTI-THEFT SYSTEMS in ACCESSORIES & EQUIPMENT.
- For symptoms related to power seats, see POWER SEATS under SEATS article in ACCESSORIES & EQUIPMENT.
DIAGNOSTIC TROUBLE CODE INDEX
| DTC (1) | Description | ||
|---|---|---|---|
| B1211 | Driver Door ECU Communication Stopped | ||
| B1212 | Front Passenger Door ECU Communication Stopped | ||
| B1214 | Door System Communication Bus Malfunction (Short To Voltage) | ||
| B1215 | Door System Communication Bus Malfunction (Short To Ground) | ||
| B1269 | Theft Deterrent ECU Communication Stopped | ||
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