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Computed Timing Check

  1. Turn key off and wait 10 seconds. Start engine. Activate KOER SELF-TEST. After the last service code has been displayed, the timing will remain fixed for 2 minutes, unless KOER SELF-TEST is deactivated.
  2. Correct Self-Test timing equals base ignition timing (10 degrees BTDC on most engines, see emission decal) plus 17-23 degrees BTDC. If timing is not 27-33 degrees BTDC, go to CIRCUIT TEST D13 - SPARK TIMING CHECK  . If timing is 27-33 degrees BTDC, proceed with KOER SELF-TEST.