LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 2004 >> Lancer Evolution >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (Auto-Cruise Control System - 2.4L (Except Evolution & SPORTBACK)) >> Auto-Cruise Control System Diagnosis >> Auto-Cruise Control System Diagnostic Function >> How To Read And Erase Diagnostic Trouble Codes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

How To Read And Erase Diagnostic Trouble Codes

WARNING: This page is about a different variant/trim than selected.

Required Special Tool: 

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
NOTE: If the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool MB991958 does not display.
  1. Connect scan tool MB991958 to the data link connector.
    Fig 1: Connecting Scan Tool MB991958 To Data Link Connector
    G00809715Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  2. Turn the ignition switch to the "ON" position.
  3. Select "Interactive Diagnosis" from the start-up screen.
  4. Select "System Select."
  5. Choose "AUTO-CRUISE" from the "POWERTRAIN" tab.
  6. Select "Diagnostic Trouble Code."
  7. If a DTC is set, it is shown.
  8. Choose "DTC erase" to erase the DTC.
  9. Turn the ignition switch to the "LOCK" (OFF) position.
  10. Disconnect scan tool MB991958.