Full list of OBD I Diagnostic Trouble Codes for your Toyota Vehicle. If your Check engine light is on you may have a serious problem. Scan your codes and follow the chart to determine what the code means. Some shops will scan your codes for free. Autozone is one place that will give you the code number. Or do it yourself with the procedure posted below.
Prior to considering the ECM (TCCS) system as cause for a complaint, ensure the battery is fully charged and the engine and all related systems are operating properly. When diagnosing ECM (TCCS) malfunctions, observe all precautions and follow procedures as outlined to ensure successful repairs.
The ECM self diagnosis circuit detects and stores system malfunctions related to the various sensor and actuator circuits. These malfunctions are stored as codes in the ECM memory as long as battery voltage is applied to the ECM, and in most cases, the Check Engine lamp will flash as long as a malfunction is present. By analyzing these codes, system malfunctions can be easily diagnosed and repaired. To obtain codes stored in the ECM memory, proceed as follows:
To extract DTCs from the computer for diagnostic purposes, the Self Test connector is used.
When a logic malfunction is first detected, the malfunction is temporarily stored in the ECM memory. If the same case is detected again during the second drive test, the second detection causes the Check Engine light to illuminate. In order for this mode to store codes, the ignition switch must be turned Off between the first and the second test. Refer to "Trouble Code Interpretation" for applicable two trip detection logic codes.
The test mode has a higher sensing ability to detect faults than in normal mode. It can detect malfunctions in the starter signal circuit, air conditioning signal and neutral start switch signal. In addition, the test mode also detects the same malfunctions as in the normal mode.
After service, the diagnostic code or codes retained in the ECM memory must be cleared by removing the SFI (EFI) fuse, on all models except Corolla and 1990 Tercel, for approximately 30 seconds or more, depending on ambient temperature (the lower the temperature, the longer the fuse must be left out) with the ignition switch off. Code cancellation is accomplished on 1990-92 Corolla models by removing the STOP fuse, and on 1993 Corolla models by removing the SFI (EFI) fuse for approximately 10 seconds, depending on ambient temperature (the lower the temperature, the longer the fuse must be left out) with the ignition switch off. On 1990 Tercel models, codes are cancelled by removing the RADIO No. 1 fuse for approximately 10 seconds, depending on ambient temperature (the lower the temperature, the longer the fuse must be left out) with the ignition switch off.
Code cancellation can also be done by removing the battery ground cable, but keep in mind that other memory systems (clock) will also be cancelled out. If the diagnostic code is not cancelled out, it will be retained by the ECM and appear along with a new code in the event of future trouble. If it is necessary to work on engine components requiring removal of the battery ground cable, ensure no codes are stored. After cancellation, road test the vehicle to check that a normal operating code is now obtained on the check engine warning lamp. If the same diagnostic code appears, the trouble has not been corrected thoroughly.
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Toyota DTC's (Diagnostic Trouble Codes)
1990 - 1991 Toyota Codes
1992 Toyota Codes
1993 Toyota Codes
Data Link Connector Location Diagrams
Fig 1 - 2TZ-FE engine
Fig 2 - 2VZ-FE engine
Fig 3 - 3E California engine
Fig 4 - 1990 3E-E engine
Fig 5 - 1991-93 3E-E engine
Fig 6 - 3F-E engine
Fig 7 - 3S-FE engine
Fig 8 - 3S-GTE engine
Fig 9 - 2JZ-GE and 2JZ-GTE engine
Fig 10 - 3VZ-E and 22R-E engine
Fig 11 - Celica with 3S-GTE, 4A-FE and 5S-FE engine
Fig 12 - 1991-93 MR2 with 3S-GTE and 5S-FEengine
Fig 13 - 1992-93 Camry with 3VZ-FE and 5S-FE engine
Fig 14 - 1990-92 Corolla with 4A-FE engine
Fig 15 - 1993 Corolla with 4A-FE and 7A-FE engine
Fig 16 - 1FZ-FE engine
Fig 17 - 4A-GE engine
Fig 18 - 5E-FE engine
Fig 19 - Cressida with 7M-GE engine
Fig 20 - Supra with 7M-GE and 7M-GTE engine
Fig 21 - Supra, Camry and Cressida engine
Fig 22 - 3VZ-E and 22R-E engine
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