LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 1997 >> Villager LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostics Using Scan Tool >> Clearing Codes >> Without Scan Tool
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Without Scan Tool

  1. 1)  DTCs can be erased from memory by switching PCM from Mode 2 (diagnostic mode), back to Mode 1 (normal operating mode). To switch from Mode 1 to Mode 2, go to next step.
  2. 2)  Turn ignition off for at least 3 seconds. Turn ignition back on. Disconnect self-test harness connector. See Figure. Using a jumper wire, connect terminals No. 3 and 6 together. After 2 seconds or longer, disconnect jumper wire and reconnect self-test harness connector. This switches MIL operation to Mode 2.
  3. 3)  To switch back to Mode 1 (and clear codes), repeat step 2). All DTCs should be erased from memory. Turn ignition off.
scientia non olet · About LEMON Manuals