ECM Idle Learn Procedure: Notes

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

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

• Disconnect the battery.
• Replace the ECM or disconnect its connector.
• Reset the ECM.
  NOTE: Erasing DTCs with HDS does requires the idle learn procedure to be done again.
• Remove the No. 6 ECU (ECM) (15 A) fuse from the under-dash fuse/relay box.
• Remove the No. 41 BATTERY (100 A) fuse from the under-hood fuse/relay box.
• Remove the PGM-FI main relay.
• Remove the battery wire from the under-hood fuse/relay box.
• Disconnect any of the connectors from the under-hood fuse/relay box.
• Disconnect the connector (C404) between the dashboard wire harness A and dashboard wire harness B.
• Disconnect the G1 terminal.
• Adjust the idle speed.