1. System self-adaptation based on crankshaft position sensor signal
crankshaft (command "30 2c 07 ff");
(a) If the vehicle is equipped with a new processor without a self-adaptation function based on the signal from the position sensor
(f) After 15 seconds, start the engine and use the diagnostic scanner to check if the problem is resolved.
(d) Press the accelerator pedal and hold it in one position, after which the engine control unit will begin self-adaptation:
within 2-5 cycles, the crankshaft speed will change in the range of 1300-
turning off the ignition.
crankshaft, after starting the engine, the control lamp lights up, and using a diagnostic scanner, the presence of a
malfunction P1336 is determined;
P1336.
4500 rpm and eventually stop at 4500 rpm, which indicates the completion of the self-adaptation process. If the
engine speed exceeds 5000 rpm, release the accelerator pedal and determine the cause of the malfunction. The
above are typical crankshaft speeds during self-adaptation based on the crankshaft position sensor signal to help the
driver determine if self-learning is in progress and completed. Upon completion of self-adaptation, the command
"Stop gear message learning" is issued using the diagnostic scanner.
(b) Wait until the coolant temperature rises to 60°C, until the engine has been running for 10 seconds, and until the load
on the engine from other systems has decreased;
(e) The engine will stop. After about 15 seconds, turn on the ignition and clear the fault code,
(c) Through the diagnostic scanner, command to perform self-adaptation based on the position sensor signal.
4C20 Gasoline Engine Repair Manual
Section X. Self-adaptation of the European-standard on-board self-diagnosis (EOBD) system
in the event of a malfunction of the crankshaft position sensor
186
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