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HAVAL 4S20 - Page 176

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Chapter XII. Engine management system
key) of the engine control unit.
(3) CAN Hi circuit short to high voltage.
necessary for identification; the key information is incorrect.
DTC U0426: Anti-theft system identification failure
DTC P0633 - No data from the anti-theft system
(a) Prerequisites: The state of the ignition switch (IGN) changes from OFF to ON,
Fault U0167: No response from the anti-theft system
(a) Prerequisites: The state of the ignition switch (IGN) changes from OFF to ON.
(a) Prerequisites: The state of the ignition switch (IGN) changes from OFF to ON,
and the engine control unit has performed the anti-theft self-adaptation procedure.
(b) Malfunction detection principle: the engine control unit cannot communicate with the anti-theft
(c) Emergency operation: the fuel pump stops supplying fuel and the engine stops; starter is blocked.
and the engine control unit has performed the anti-theft self-adaptation procedure.
(b) Emergency operation: the fuel pump stops supplying fuel and the engine stops; starter is blocked.
(d) Possible causes of malfunction: PIN and SK codes are missing in the memory of the engine control unit; not
(c) Emergency operation: the engine does not start; when the engine is stopped, the supply stops
system.
(b) Malfunction detection principle: when the ignition is turned on, the response from the anti-theft system is received
Means after self-adaptation, the contacts of the battery were disconnected.
after the set time after the identification request from the engine control unit.
fuel.
(c) Emergency operation: the fuel pump stops supplying fuel and the engine stops; starter is blocked.
(d) Possible cause of the malfunction: mismatch between the anti-theft system and the PIN code (or secret code
(d) Possible causes of malfunction: no connection between the wiring harness and the KW wire of the communication system,
169
Machine Translated by Google

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