NOTE: Visually inspect for any of the following conditions and correct any identified problems before performing any MOST network tests.
- Any sharp bends in the fiber optic wiring harnesses (check this before moving any modules or connectors)
- Incorrect mating of any optical connectors
- Incorrect mating of any electrical connectors
- Damage to the fiber optic cable bundle (fraying, abrasive wear, kinks, cuts, breaks, etc.)
- Incorrect assembly of optical network
NOTE: Unless otherwise noted, ensure that the ignition is in the 'ON' position when performing MOST network tests
Pinpoint Test A: MOST Network Checks
A1: HLDF display check
Check the HLDF display. Does the HLDF display show a flashing Land Rover logo or a blank screen?
Да - GO to A2.
No - No fault has occurred at the checkpoint. There may be a parameter error in the vehicle configuration file. Check the modules in the MOST network for the corresponding DTCs and refer to the corresponding DTC index.
A2: Checking the RD1 checkpoint link
Check the RD1 control point link in the auxiliary electrical distribution box (AJB) for possible disconnection or breakage of the electrical circuit. The RD1 control point link in the auxiliary electrical distribution box (AJB) is disconnected or there is a break in the electrical circuit.
Да - Fix the problem and recheck the condition of the vehicle. No - GO to A3.
A3: Initiating Checkpoint diagnostics (RBD) and reading DTC codes
- Check for the presence of the RD1 checkpoint link in AJB.
- Make sure the remote key is placed in the holder.
- Turn the vehicle ignition from the 'OFF' position to the 'ON' position.
- Clear all DTCs.
- Remove the RD1 check point link from the AJB, wait at least ten seconds and reinstall the RD1 loop break link to the AJB.
- Please wait at least 30 seconds for RBD to initiate and complete the operation.
- Perform a reading of all DTC codes.
Да - GO to A4.
No - Check HLDF for additional DTCs and refer to the appropriate DTC Index.
A4: Check for fault on pin 2 of intermediate connector C23T
Disconnect the MOST network C23T intermediate connector. Is there a bright red light visible on pin 2 of the MOST network C23T intermediate connector?
Да - GO to A5.
No - GO to A6.
A5: Checking for a fault in the first half of the MOST network
- Connect the Optical Bus Tester (OBT) to the C23T intermediate connector using the supplied connecting cable.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Malfunction in the second half of the MOST network. Disconnect the OBT and reconnect the intermediate connector. GO to A13.
No - Disconnect the OBT from the C23T intermediate connector and connect the supplied optical LINK. GO to A10.
A6: Checking for faults in the infotainment module
Disconnect the MOST network connector C2ME05B on the infotainment module. Is there a bright red light visible on pin 2 of the C2ME05B connector, on the module side?
Да - Is HLDF installed in the vehicle? GO to A7. If HLDF is not installed, the fiber optic cable between pin 2 of connector C2ME05B and pin 2 of connector C23T is faulty; fix the problem and recheck the vehicle.
No - Install a new infotainment module and retest the vehicle.
A7: Checking for fault in fiber optic cable going to HLDF
- Reconnect the MOST network connector C2ME05B to the infotainment module.
- Disconnect the MOST network connector C2MN08C on HLDF.
Да - GO to A8.
No - Faulty fiber optic wiring harness between pin 2 of connector C2ME05B and pin 1 of connector C2MN08C; fix the problem and recheck the vehicle.
A8: Checking whether there is a fault in the fiber optic cable coming from HLDF
- Connect OBT to MOST C2MN08C HLDF network connector.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - GO to A9.
No - Faulty fiber optic wiring harness between pin 2 of connector C23T and pin 2 of connector C2MN08C; fix the problem and recheck the vehicle.
A9: Check for HLDF fault
Connect the optical link to the MOST C23T network intermediate connector. Is the receive indicator/LED constantly on and the HLDF display always blank?
Да - Check/repair the power and ground lines to the HLDF. If the power and ground lines are OK, install a new HLDF. For more information, refer to: Video System Display (415-01 Infotainment System, Removal and Installation).
No - Check the integrity of the connections of the intermediate connector C23T and recheck the vehicle.
A10: Check for a fault in the fiber optic cable going to the integrated audio unit
Disconnect the MOST network connector C2ME44B on the integrated audio unit. Is there a bright red light visible on pin 1 of the MOST network connector C2ME44B, on the wiring harness side?
Да - GO to A11.
No - Faulty fiber optic wiring harness between pin 1 of connector C23T and pin 1 of connector C2ME44B; fix the problem and recheck the vehicle.
A11: Integrated Audio Unit Malfunction Check
- Connect the OBT to the C2ME44B connector of the integrated audio unit of the MOST network.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Check/repair the power and ground lines to the integrated audio unit. If the power and ground lines are OK, install a new integrated audio unit.
No - GO to A12.
A12: Check for faulty fiber optic cable coming from integrated audio unit
- Disconnect the MOST network connector C2ME05B on the infotainment module.
- Turn OBT on ('ON') and select 2+0 mode.
- Press the red 'TEST' button on the OBT and observe pin 1 of the C2ME05B connector, on the wiring harness side
Да - Install a new infotainment control module.
No - The fiber optic wiring harness between pin 1 of the C2ME05B connector and pin 2 of the C2ME44B connector is faulty; fix the problem and recheck the vehicle.
A13: Checking for the presence of a navigation module
Check for the presence of a navigation module. Is the vehicle equipped with a navigation module?
Да - GO to A14.
No - GO to A16.
A14: Check for faulty fiber optic cable going to navigation module
Disconnect the MOST network connector C3MN08C on the navigation module. Is there a bright red light visible on pin 1 of the C3MN08C connector, on the wiring harness side?
Да - GO to A15.
No - Faulty fiber optic wiring harness between pin 1 of connector C3MN08C and pin 2 of connector C23S; fix the problem and recheck the vehicle.
A15: Check for a fault in the navigation module
- Connect the OBT to the MOST network connector C3MN08C of the navigation module.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Check/repair the power and ground lines to the navigation module. If the power and ground lines are OK, install a new navigation module. For more information, refer to: DVD-based navigation system (415-01 Infotainment system, Removal and installation).
No - Disconnect the OBT and connect the MOST network connector C3MN08C of the navigation module. GO to A16.
A16: Check for a fault in the fiber optic cable going to the audio amplifier module
Disconnect the MOST network connector C4ME27C on the audio amplifier module. Is there a bright red light visible on pin 1 of the C4ME27C connector, on the wiring harness side?
Да - GO to A17.
No - The optical fiber wiring harness between pin 2 of connector C3MN08C (or pin 2 of connector C23S if the navigation module is not installed in the vehicle) and pin 1 of connector C4ME27C is faulty. Repair the fault and retest the vehicle.
A17: Check for a fault in the audio amplifier module
- Connect the OBT to the MOST C4ME27C Network Audio Amplifier Module connector.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Check/repair the power and ground lines to the audio amplifier module. If the power and ground lines are OK, install a new audio amplifier module. For additional information, refer to: Subwoofer Amplifier (415-01 Infotainment System, Removal and Installation).
No - Disconnect the OBT and connect the MOST Network Audio Amplifier Module connector C4ME27C. GO to A18.
A18: Checking for bluetooth module
Check for Bluetooth module. Does your car have a Bluetooth module?
Да - GO to A19.
No - GO to A21.
A19: Check if the fiber optic cable going to the bluetooth module is faulty
Disconnect the MOST C4MM22B network connector on the Bluetooth module. Is there a bright red light visible on pin 1 of the C4MM22B connector, on the wiring harness side?
Да - GO to A20.
No - The fiber optic wiring harness between pin 2 of the C4ME27C connector and pin 1 of the C4MM22B connector is faulty; fix the problem and recheck the vehicle.
A20: Check for Bluetooth module malfunction
- Connect the OBT to the MOST C4MM22B network connector of the Bluetooth module.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Check/repair the power and ground lines to the Bluetooth module. If the power and ground lines are OK, install a new Bluetooth module. For more information, refer to: Bluetooth Module (415-01 Infotainment System, Removal and Installation).
No - Disconnect OBT and connect MOST C4MM22B network connector of Bluetooth module. GO to A21.
A21: Check for the presence of a digital radio broadcasting/satellite radio receiver module
Check for DAB/Satellite Radio Module Is your vehicle equipped with a DAB/Satellite Radio module?
Да - GO to A22.
No - GO TO A24.
A22: Check for a malfunction of the fiber-optic cable running to the digital broadcasting/satellite radio module
Disconnect the MOST network connector C4ME43B on the digital radio/satellite radio module. Is bright red light visible on pin 1 of the C4ME43B connector, on the wiring harness side?
Да - GO to A23.
No - The optical fiber wiring harness between pin 2 of connector C4MM22B (or pin 2 of connector C4ME27C if the Bluetooth module is not installed in the vehicle) and pin 1 of connector C4ME43B is faulty. Repair the fault and retest the vehicle.
A23: Check for faulty digital radio/satellite radio module
- Connect the OBT to the MOST network connector of the C4ME43B digital radio/satellite radio module.
- Turn OBT on ('ON') and select 2+0 mode.
- Select the visible LED mode.
Да - Check/repair the power and ground lines to the digital radio/satellite radio module. If the power and ground lines are OK, install a new digital radio/satellite radio module. For more information, refer to: Satellite Radio Receiver (415-01 Infotainment System, Removal and Installation).
No - GO TO A24.
A24: Check for fault in fiber optic cable going to pin 1 of intermediate connector C23S
- Disconnect the intermediate connector C23S.
- Turn OBT on ('ON') and select 2+0 mode.
- Press the red 'TEST' button on the OBT and observe pin 1 of the C23S connector, on the wiring harness side
Да - No faults related to the MOST network are shown; check all connectors and retest the vehicle.
No - The optical fibre wiring harness between pin 2 of connector C4ME43B if the digital audio/satellite radio module is installed (or pin 2 of connector C4MM22B if the digital audio/satellite radio module is not installed, or pin 2 of connector C4ME27C if the Bluetooth module is not installed) and pin 1 of connector C23S is faulty. Repair the fault and recheck the vehicle.
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