LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jaguar >> 2002 >> XJR Base >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Electronic Engine Controls >> General Procedures >> Engine Control Module (ECM) Adaptation >> When To Carry Out Adaptations
April 5, 2026: LEMON Manuals is launched! Read the announcement.

When To Carry Out Adaptations

  1. Whenever the battery is disconnected, the Engine Control Module (ECM) adaptations are reset to a 'green' ECM condition. In this condition, certain functions of the ECM are inhibited, and the ECM must 'relearn' these functions. To enable the ECM to do this, the vehicle will have to perform some maneuvers which it may, or may not, do during a normal road test. The routine in this procedure should be carried out at Pre-Delivery Inspection, and after any emissions related rectification work involving the disconnection of the battery.
  2. When the DTCs relating to a rectified concern are cleared, P1000 (system checks not complete since last memory clear) will be flagged. This DTC does not indicate a failure, just that diagnostic drive cycles need to be performed. The vehicle's on-board diagnostic system will confirm that all the diagnostic drive cycles are complete by flagging P1111, (system checks complete since last memory clear)
scientia non olet · About LEMON Manuals