Self-Diagnostics System: Description

There are several methods available to enter into self-diagnostics. Using either Nissan's CONSULT, Generic Scan Tool (GST) or MIL, review and record any DTC or freeze-frame information available before clearing DTCs or disconnecting the battery for a prolonged period.

Before entering self-diagnostics with MIL or GST, review the following precautions before proceeding;

• Review and record all stored DTCs before entering into diagnostic procedures.
• When ignition is turned off for more than 5 seconds during PCM Mode II, system will automatically return to Mode I.
• If battery is disconnected for an extended period, DTCs may be lost from memory.
• If battery is disconnected or DTCs cleared, SRT codes must be reset prior to performing an I/M test.
• Be careful not to erase stored DTCs before recording data for diagnostic testing.
• Switching mode selector on PCM from diagnostic test mode I to diagnostic test mode II is not possible when engine is running.
• Ensure PCM diagnostic test mode selector is turned back to the full counterclockwise position whenever vehicle is in use.