LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jaguar >> 2003 >> XJ8 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Module Communications Network) >> Module Communications Network >> Communications Network - Diagnostic Procedures >> Inspection and Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection and Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Jaguar XKR, 2006 Jaguar XK8, 2005 Jaguar XKR, 2005 Jaguar XK8, and 2004 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Confirm which, if any, warning lights and/or messages were displayed on the instrument cluster.
    NOTE: If any warning lights and/or messages were displayed when the fault occurred, refer to Driver Information Chart  for DTCs associated with the display, then to the DTC index table for possible sources and actions. Some warnings will appear to clear when the ignition is cycled. This is often because the warning has flagged as a result of one of the vehicle's on-board diagnostic routines having run to detect the fault. If the same routine is not run when the ignition is switched ON  , the warning will not reflag until the routine does run. See the DTC summaries for drive cycle routines.
  3. Visually inspect for obvious signs of mechanical or electrical damage.
    Visual Inspection Chart

    Electrical
    General 
    • Fuses (see table)
    • Wiring harness
    • Correct engagement of electrical connectors
    • Loose or corroded connections

    Controller Area Network (CAN) 
    • Instrument Cluster (IC)
    • Engine control module (ECM)
    • Dynamic Stability Control Module (DSCCM)
    • Transmission Control Module (TCM)
    • Adaptive Speed Control Module (ASCCM)
    • Linear Switch Module
    • J-Gate illumination Module

    Standard Corporate Protocol (SCP) 
    • Instrument Cluster (IC)
    • Body Processor Module (BPM)
    • Security and Locking Control Module (SLCM)
    • Passenger Door Control Module (PDCM)
    • Driver Door Control Module (DDCM)
    • Passenger Head Restraint Control Module (PHRCM)
    • Passenger Seat Control Module (PSCM)
    • Driver Seat Control Module (DSCM)
    • Driver Head Restraint Control Module (DHRCM)

    International Standards Organization (ISO) 
    • Restraints Control Module (RCM)
    • Parking Aid Control Module (PACM)
    • Adaptive Damping Control Module (ADCM)
    • Engine Control Module (ECM)
    • Left-hand High Intensity Discharge Headlamp Assembly (HID)
    • Right-hand High Intensity Discharge Headlamp Assembly (HID)
    • Key Transponder Module (KTM)
    • Air Conditioning Control Module (A/CCM)
    • Body Processor Module (BPM)
    • Active Security Sounder (ROW only)
    Fuse Identification Chart

    Fuse Rating Circuit Location
    10 10 Amp Engine Control Module EMS fuse box, passenger side within bulkhead extension
    04 5 Amp Main Instrument Cluster Facia fuse box, passenger side
    06 5 Amp Key Transponder Module Facia fuse box, passenger side
    07 15 Amp Body Processor Module Facia fuse box, passenger side
    08 10 Amp Driver's Headrest Control Module Facia fuse box, passenger side
    10 10 Amp Airbag Control Module Facia fuse box, passenger side
    13 5 Amp Diagnostic Connector (battery) Facia fuse box, passenger side
    14 10 Amp Main Instrument Cluster Facia fuse box, passenger side
    15 25 Amp Driver's Door Control Module Facia fuse box, passenger side
    16 5 Amp Linear Switch Module Facia fuse box, passenger side
    18 10 Amp Engine Control Module Facia fuse box, passenger side
    01 20 Amp Passenger Seat Control Module Facia fuse box, driver's side
    06 10 Amp Air Conditioning Control Module Facia fuse box, driver's side
    07 20 Amp Body Processor Module Facia fuse box, driver's side
    08 10 Amp Passenger Headrest Control Module Facia fuse box, driver's side
    15 25 Amp Passenger Door Control Module Facia fuse box, driver's side
    17 15 Amp Body Processor Module Facia fuse box, driver's side
    01 10 Amp Transmission Control Module Engine Compartment fuse box, Left-hand side
    03 5 Amp Security Sounder/HID modules Engine Compartment fuse box, Left-hand side
    04 5 Amp Dynamic Stability Control Module Engine Compartment fuse box, Left-hand side
    06 20 Amp Right-hand HID Engine Compartment fuse box, Left-hand side
    08 20 Amp Left-hand HID Engine Compartment fuse box, Left-hand side
    09 10 Amp Security Sounder Engine Compartment fuse box, Left-hand side
    19 10 Amp Right-hand HID Engine Compartment fuse box, Left-hand side
    21 10 Amp Left-hand HID Engine Compartment fuse box, Left-hand side
    22 5 Amp Adaptive Speed Control Module Engine Compartment fuse box, Left-hand side
    02 20 Amp Adaptive Speed Control Module Luggage compartment fuse box
    03 5 Amp Diagnostic Connector (ignition) Luggage compartment fuse box
    04 5 Amp Adaptive Damping Control Module Luggage compartment fuse box
    06 5 Amp Security and Locking Control Module Luggage compartment fuse box
    10 10 Amp Security and Locking Control Module Luggage compartment fuse box
    13 5 Amp Reverse Aid, Navigation, DVD unit, TV, VICS (Japan) Luggage compartment fuse box
    16 5 Amp Navigation, TV and VICS (Japan) Luggage compartment fuse box
  1. Where the Jaguar approved diagnostic system is available, complete the S93 report before clearing any or all fault codes from the vehicle.
    NOTE: If a DTC cannot be cleared, then there is a permanent fault present that flags again as soon as it is cleared. (The exception to this is P1260, which will only clear following an ignition OFF  , wait one minute, ignition ON  cycle after rectification.)
  2. If the cause is not visually evident and the Jaguar approved diagnostic system is not available, use a scan tool to retrieve the fault codes before proceeding to the Diagnostic Trouble Code (DTC) Index Chart, or the Symptom Chart if no DTCs are set.
  3. Using the Jaguar approved diagnostic system where available, and a scan tool where not, check the freeze frame data for information on the conditions applicable when the fault was flagged. The format of this will vary, depending on the tool used, but can provide information useful to the technician in diagnosing the fault.
    CAUTION: Diagnosis by substitution from a donor vehicle is Not  acceptable. Each vehicle is configured to it's own VID block, and substitution of control modules may not only not confirm a fault, but may cause faults in the vehicle being tested and/or the donor vehicle.
    CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.
    CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.
    NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.
    NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
  4. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
  5. If the cause is not visually evident, verify the symptom and refer to Diagnostic Trouble Code (DTC) index .
scientia non olet · About LEMON Manuals