As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS AS THROTTLES WERE ADVANCED FOR TAKE OFF AND N1/EPR BUTTON ENGAGED, THE LEFT EEC AND LEFT ENGINE LIMITER ILLUMINATED/ N1/EPR WOULD NOT ENGAGE. MAINTENANCE REMOVED AND REPLACED LEFT ENGINE EEC SUPERVISORY AND LIMITER IAW AMM 73-21-07. RAN UP ENGINE, ALL INDICATIONS NORMAL. INTERROGATED THE EEC IAW AMM 73-21-00, NO FAULTS DISPLAYED, APPROVED FOR SERVICE.