ECM/PCM Idle Learn Procedure: Notes

The idle learn procedure must be done so the ECM/PCM can learn the engine idle characteristics.

Do the idle learn procedure whenever you do any of these actions:

• Disconnect the battery.
• Replace the ECM/PCM or disconnect its connector.
• Reset the ECM/PCM.
  NOTE: Erasing DTCs with the HDS does not require you to do the idle learn procedure.
• Replace the throttle body.
• Replace the idle air control (IAC) valve.
• Remove the No. 6 ECU (ECM/PCM) (15A) fuse from the under-hood fuse/relay box.
• Remove the No. 19 BATTERY (80A) fuse from the under-hood fuse/relay box.
• Remove PGM-FI main relay 1.
• Remove any of the wires from the under-hood fuse/relay box.
• Disconnect any of the connectors from the underhood fuse/relay box.
• Disconnect the connector between the engine compartment wire harness and ECM/PCM wire harness.
• Disconnect the G2 terminal from the transmission housing.
• Disconnect the G1 terminal from the body.
• Disconnect the G101 terminal from the cylinder head cover.