XJ-S V12-5.3L (1982)
Engine Control Module: All Technical Service Bulletins
Tool - Remove Tamper Proof ECU Plug
January 1, 1983
ITEM:
J83/05
MODEL:
XJ-S HE
SUBJECT:
TAMPER-PROOF PLUG - ECU
Dealers should be aware that damage to the intermal circuitry of the ECU will be caused if any attempt is made to drill out the tamper-proof plug which
covers the adjusting potentiometer. Should the need arise to make any adjustment to the ECU, a special tool, P/N 60 730551 referred to in Jaguar
Technical Service Bulletin J82/32 issued in July, 1982, must be used.
The blanking plug which consists of an expanding slotted sleeve may be pulled out by inserting an instrument similar to a dental probe into the slots.
