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Idle Speed: Testing

NOTE: DO NOT take measurements while radiator cooling fan is operating.
  1. Start engine and let idle.
  2. Select engine Basic Setting. See BASIC SETTING FUNCTION (4) in SELF-DIAGNOSTICS .
  3. Value in display channel 1 (display field, RPM) must be within 770-830 range.
  4. If NO: Perform the following steps:
    • Read DTC Memory again.
    • Initiate Output Diagnostic Test Mode (DTM). See OUTPUT DIAGNOSTIC TEST MODE in SELF-DIAGNOSTICS .
    • Check test table for possible cause of malfunction. See BASIC SETTING VALUES CHECKING TABLES under OUTPUT DIAGNOSTIC TEST MODE in SELF-DIAGNOSTICS .
  5. Make the necessary repairs.
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