Diagnostic Socket
The diagnostic socket allows the transfer of information between the vehicle electronic control modules and the IDS. The diagnostic socket is connected directly to both the medium speed CAN bus and the high speed CAN bus and is located below the drivers side of the instrument panel.
Ring Break Diagnostics
Incorporated into the Auxiliary Junction Box (AJB) is a Ring Break Diagnostics (RBD) link. The RBD link houses a copper link which when removed initiates the ring break diagnostics mode. The ring break diagnostics mode allows the technician to locate an optical fiber break in the MOST ring. To initiate the ring break diagnostics mode, carry out the following process
- Connect the Jaguar approved diagnostic system.
- Ensure the vehicle is in power mode 4 or greater.
- Remove the RBD link for the length of time specified by the Jaguar approved diagnostic system.
- Replace the RBD link.
After approximately 30 seconds a Diagnostic Trouble Code (DTC) will be logged in the Information and Entertainment Control Module, identifying the location of the fault. The DTC can be read and interrogated using the Jaguar approved diagnostic system.
Inspection and Verification
| CAUTION | Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional 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. |
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage and system integrity. Electrical Fuses (refer to electrical guide) Wiring harness Correct engagement of electrical connectors Loose or corroded connections Routing of fibre optic harnesses Correct engagement of optical connectors Correct placement of optical connectors (ring order) Correct assembly of optical connectors (backout, etc) Damage to fibre (chafing, abrasion, kinking, cuts, etc)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident check for diagnostic trouble codes (DTCs) and refer to the «DTC Index»(ref-312555-S01105054402009041400000) .
DTC Index
| CAUTION | When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00. |
Note. If the control module is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval program is in operation, prior to the installation of a new module.
Note. Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give additional information read by the manufacturer approved diagnostic system).
Note. When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three 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.
Note. Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
Note. If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.