![]() The DTC 12, which is simply a check code meaning that the diagnostic system is functioning, will be displayed three times before any stored DTCs are displayed. All DTCs will appear in numerical order and repeat themselves three times before cycling to the next stored DTC. SES-SES-SES-SES-SES-SES-SES-SES would indicate a DTC 35Īnd so forth. SES-SES-SES-SES-SES would indicate a DTC 23 (let "-" denote the length of the pause between SES light flashes) To avoid confusion, there are NO codes that have a zero in the number. A long pause will always indicate that the sequence has moved on to the second number or to the next DTC. To read a DTC, count the number of times the SES light flashes with only short pauses between each flash, then repeat after the following long pause. ![]() DTCs are displayed in a manner reminiscent of Morse Code, using the SES light as an indicator and a combination of long and short pauses between illuminations. 1) With the ignition switch in the "OFF" position, jump (connect) the "A" and "B" terminals - a small length of 14-16 AWG solid core wire stripped at both ends seems to work well, but there are obviously many methods for accomplishing this.Ģ) Switch the ignition switch to the "RUN" position, which will initiate the glow plug preheat sequence.ģ) Monitor the "Service Engine Soon" light, which will indicate any and all stored DTCs.
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