PRECAUTIONS

On Board Diagnostic (OBD) System of Engine and CVT

The ECM has an on board diagnostic system. It will illuminate the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration.

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 cause the MIL to illuminate.
• 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. (Always the connector is free from water, grease, dirt, bent terminals, etc.)
• Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to See: Power and Ground Distribution\Multiple Junction Connector\Description and Operation\Coupe (coupe) or See: Power and Ground Distribution\Multiple Junction Connector\Description and Operation\Sedan (sedan).
• 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, etc.
• Always to erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer.