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EC-524 < PRECAUTION > [VQ35DE] PRECAUTIONS FOR MEXICO : Precaution for Procedure without Cowl Top Cover INFOID:0000000005716163 When performing the procedure after removing cowl top cover, cover FOR MEXICO : On Board Diagnostic (OBD) System of Engine and CVT INFOID:0000000005716164 The ECM has an on board diagnostic system. It will illuminate the malfunction indicator lamp (MIL) to warn the CAUTION: • Always to turn the ignition switch OFF and disconnect the negative battery cable before any repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will • Always to connect and lock the connectors securely after work. A loose (unlocked) connector will cause the MIL to illuminate due to the open circuit. (Be sure the connector is free from water, grease, • Certain systems and components, especially those related to OBD, may use a new style slide-lock- ing type harness connector. For description and how to disconnect, refer to • Always route and secure the harnesses properly after work. The interference of the harness with a bracket, etc. may cause the MIL to illuminate due to the short circuit. • Always to connect rubber tubes properly after work. A misconnected or disconnected rubber tube may cause the MIL to illuminate due to the malfunction of the EVAP system or fuel injection system, • Always to erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer. FOR MEXICO : General Precautions INFOID:0000000005716165 • Always use a 12 volt battery as power source. running. • Before connecting or disconnecting the ECM harness con- nector, turn ignition switch OFF and disconnect negative bat- • Before removing parts, turn ignition switch OFF and then dis- connect battery ground cable. • Never disassemble ECM. The ECM will now start to self-control at its initial value. Thus, engine operation can vary slightly in • If the battery is disconnected, the following emission-related diagnostic information will be lost within 24 hours. - Diagnostic trouble codes PIIB3706J SEF289H |