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1. Ecu diagnostics menu manuals#
2. Ecu diagnostics menu full#
3. Ecu diagnostics menu code#
4. Ecu diagnostics menu series#

On-board diagnostics ( OBD) is an automotive term referring to a vehicle's self-diagnostic and reporting capability. Used to connect to the SAE J1962 Data Link Connector (DLC) found in many cars of the era.

Ecu diagnostics menu full#

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Ecu diagnostics menu code#

Code 51 (AC compressor switch signal) is erratic by nature and will sometimes come on without malfunction. Warning: Test mode will not start if terminals are shorted after ignition is turned ON. (code 41 and 42)Īfter test drive, short connectors TE1 and E1īe sure to Remove SST from check connector when finished. If the speed fails to reach this the ECU will falsely report that the starter and speed sensor is malfunctioning. Start the engine and drive the vehicle at or faster than 10km/h (6mph). To check that the TEST mode is operational, confirm that the warning light flashes with ignition in ON position. Turn ignition ON to begin diagnosis in TEST mode. In the same manner and conditions as the normal diagnostic, short the TE2 and E1 of the diagnostic connector. The same codes also will be detected as those of the normal modes. It can also detect starter signal circuit, and air conditioning components. In this mode, the ECU will have increased sensing ability for malfunction detection. Test Mode: (1989 and later ECU, with variation in models))

The ignition must be switched OFF between the 2 successive engine operations. This means that the ECU will need two repeated engine operational cycles, with the same problem for the code to be indicated, minimizing the false codes.

If there are 2 or more codes, there will be a 2.5 seconds pause between each signaled codes.Īfter all codes have flashed, there will be a 4.5 second interval and the codes will repeat until TE1 and E1 has been disconnected.ĭiagnostic Codes 20-29 are usually indicated with 2 -trip logic.

Ecu diagnostics menu series#

The first series of blinks will equal the 1st digit of a 2 digit code and after a 1.5second pause, the second series of blinks will indicate the 2nd digit. In the event of a registered malfunction, the light will blink every 0.52 second. The light will alternatively blink ON and OFF at 0.26 second intervals. Short terminals TE1 and E1 of the check connector of the diagnosis connector cluster. Throttle valves must be fully closed (on newer engines)

Initial conditions must be met for codes to appear in normal output.Ģ. This diagram is to assist those who are qualified in obtaining some information out of the ECU on cars equipped with factory units.ĭiagnosis System: To obtain output, proceed as follows.

Ecu diagnostics menu manuals#

It is essential that you do have the proper manuals and skills necessary to perform diagnostic and repairs. Some codes may not exist in earlier or non-applicable engine ECU's but all codes are common between 4A and many other Toyota ECU. The following codes apply to all Toyota 4A series engines.