Tool - Lucas Feedback Monitor
88jaguar02SUBJECT: FEEDBACK SETTINGS DAC 4585 ECU
MODEL: XJS 89 MY, 88 MY FROM VIN 144629
NO.: 7-027
DATE: 4/22/88
Information listed below pertains to the use of Lucas special tool PT #YWB 130 (Feedback Monitor) on 1988 and 1989 MY XJS vehicles.
XJS Vehicles from VIN 144629 have been equipped with a DAC 4585 Engine Management ECU. When checking feedback settings, ensure that the feedback monitor (PT #YWB 130) is set in the "high" position. The following preliminary checks should also be made:
Vehicle at operating temperature Air conditioning switched off Auxiliary cooling fan off Vehicle in Park with Inhibit Link disconnected
If CO adjustments are within specification, the lamps in either Row 2, 3 or a combination of the two should be illuminated. If these parameters are not met, reference should be made to the XJS Engine Performance Guide, Publication S58.