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Home >> Toyota >> 2003 >> Highlander Limited, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System Self Diagnostics - 4-Cylinder) >> Self-Diagnostic System >> Intermittent Problem Check (Hand-Held Tester Only)

Intermittent Problem Check (Hand-Held Tester Only)

WARNING: This page is about a different variant/trim than selected.
NOTE: By putting vehicle's ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.
  1. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES .
  2. Set check mode. See CHECK MODE CODE RETRIEVAL  under RETRIEVING DIAGNOSTIC TROUBLE CODES.
  3. Simulate conditions of malfunction described by customer.
  4. Check connector and terminal.
  5. Wiggle connector.