Pinpoint Tests

Pinpoint Tests

NOTE:
Visually inspect for any of the following conditions and rectify any fault identified prior to carrying out any tests on the MOST Network.
- Any sharp bends in the optical fibre harness (check for this before disturbing any module or connector)
- Incorrect engagement of any optical connectors
- Incorrect engagement of any electrical connectors
- Damage to the optical fibre harness (chafing, abrasion, kinking, cuts, break, etc)
- Incorrect assembly of the optical network

NOTE:
Unless otherwise stated, ensure vehicle ignition status is set to 'ON' when carrying out MOST Network tests.

PINPOINT TEST G1275267p1 : MOST NETWORK TESTS

G1275267t1 : CHECK HLDF DISPLAY
1 Check HLDF display
- Is the HLDF showing a flashing Land Rover logo, or a blank screen?

->Yes
GO to Pinpoint Test G1275267t2.

->No
No ring break fault has occurred. Suspect invalid Car Configuration File parameter faults, check modules on MOST Network for related DTCs and refer to the relevant DTC Index.

G1275267t2 : CHECK RD1 RING BREAK LINK
1 Check the RD1 Ring Break link in Auxiliary Junction Box (AJB) is not disconnected or open circuit.
- Is the RD1 Ring Break link in Auxiliary Junction Box (AJB) disconnected or open circuit?

->Yes
Rectify the fault condition and re-test vehicle.

->No
GO to Pinpoint Test G1275267t3.

G1275267t3 : INITIATE RING BREAK DIAGNOSTIC (RBD) & READ DTCs
1 Ensure RD1 Ring Break link is in AJB.
2 Ensure remote key is inserted into key holder.
3 Set vehicle ignition status from 'OFF' to 'ON'.
4 Clear all DTCs.
5 Remove RD1 Ring Break link from AJB, wait at least ten seconds, re-insert RD1 Ring Break link into AJB.
6 Wait at least 30 seconds for RBD to initiate and complete.
7 Read all DTCs.
- Is DTC U1A1587 logged?

->Yes
GO to Pinpoint Test G1275267t4.

->No
Check HLDF for additional DTCs and refer to relevant DTC Index.

G1275267t4 : CHECK FOR FAILURE AT INTERMEDIATE CONNECTOR C23T PIN 2
1 Disconnect the MOST network intermediate connector C23T.
- Is the bright red light visible at MOST intermediate connector C23T pin 2?

->Yes
GO to Pinpoint Test G1275267t5.

->No
GO to Pinpoint Test G1275267t6.

G1275267t5 : CHECK FOR FAILURE AT FIRST HALF OF MOST NETWORK
1 Connect the Optical Bus Tester (OBT) to intermediate connector C23T using adaptor lead supplied.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying 'Home menu screen' or Land Rover logo?

->Yes
Fault is in second half of MOST Network. Disconnect OBT and re-connect intermediate connector.
GO to Pinpoint Test G1275267t13.

->No
Disconnect OBT from intermediate connector C23T and connect optical LINK provided
GO to Pinpoint Test G1275267t10.

G1275267t6 : CHECK FOR FAILURE AT INFORMATION AND ENTERTAINMENT MODULE
1 Disconnect MOST connector C2ME05B from information and entertainment module.
- Is the bright red light visible at module side of connector C2ME05B pin 2?

->Yes
If there is a HLDF installed to the vehicle.
GO to Pinpoint Test G1275267t7.
If there is no HLDF installed, the fault is in the optical fibre between C2ME05B pin 2 and C23T pin 2, rectify the fault and re-test the vehicle.

->No
Install a new information and entertainment module and re-test vehicle.

G1275267t7 : CHECK FOR FAILURE OF OPTICAL FIBRE TO HLDF
1 Re-connect MOST connector C2ME05B to information and entertainment module.
2 Disconnect MOST connector C2MN08C from HLDF.
- Is the bright red light visible at harness side of MOST connector C2MN08C pin 1?

->Yes
GO to Pinpoint Test G1275267t8.

->No
Fault is in optical fibre harness between C2ME05B pin 2 and C2MN08C pin 1, rectify the fault and re-test vehicle.

G1275267t8 : CHECK FOR FAILURE OF OPTICAL FIBRE FROM HLDF
1 Connect OBT to HLDF MOST connector C2MN08C.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the bright red light visible at MOST intermediate connector C23T pin 2?

->Yes
GO to Pinpoint Test G1275267t9.

->No
Fault is in optical fibre harness between C23T pin 2 and C2MN08C pin 2, rectify the fault and re-test vehicle.

G1275267t9 : CHECK FOR FAILURE AT HLDF
1 Connect the optical Link provided to MOST intermediate connector C23T.
- Is the Rx lamp/LED permanently 'ON' and the HLDF permanently displaying blank screen?

->Yes
Check/repair power feed and ground lines to HLDF. If power feed and ground lines ok, install a new HLDF. For additional information, refer to Video Display Service and Repair

->No
Check integrity of intermediate connector C23T connections, and re-test vehicle.

G1275267t10 : CHECK FOR FAILURE OF OPTICAL FIBRE TO INTEGRATED AUDIO MODULE
1 Disconnect MOST connector C2ME44B from integrated audio module.
- Is the bright red light visible at harness side of MOST connector C2ME44B pin 1?

->Yes
GO to Pinpoint Test G1275267t11.

->No
Fault is in optical fibre harness between C23T pin 1 and C2ME44B pin 1, rectify the fault and re-test vehicle.

G1275267t11 : CHECK FOR FAILURE AT INTEGRATED AUDIO MODULE
1 Connect OBT to integrated audio module MOST connector C2ME44B.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying Land Rover logo?

->Yes
Check/repair power feed and ground lines to integrated audio module. If power feed and ground lines ok, install a new integrated audio module.

->No
GO to Pinpoint Test G1275267t12.

G1275267t12 : CHECK FOR FAILURE OF OPTICAL FIBRE FROM INTEGRATED AUDIO MODULE
1 Disconnect MOST connector C2ME05B from information and entertainment module.
2 Switch OBT 'ON' and set to 2+0 option.
3 Press red 'TEST' button on OBT and observe harness side of connector C2ME05B pin 1
- Is the bright red light visible at harness side of connector C2ME05B pin 1?

->Yes
Install a new information and entertainment control module.

->No
Fault is in optical fibre harness between C2ME05B pin 1 and C2ME44B pin 2, rectify the fault and re-test vehicle.

G1275267t13 : CHECK FOR INSTALLATION OF NAVIGATION MODULE
1 Check for installation of Navigation module.
- Is there a Navigation module installed to vehicle?

->Yes
GO to Pinpoint Test G1275267t14.

->No
GO to Pinpoint Test G1275267t16.

G1275267t14 : CHECK FOR FAILURE OF OPTICAL FIBRE TO NAVIGATION MODULE
1 Disconnect MOST connector C3MN08C from the navigation module.
- Is the bright red light visible at harness side of connector C3MN08C pin 1?

->Yes
GO to Pinpoint Test G1275267t15.

->No
Fault is in optical fibre harness between C3MN08C pin 1 and C23S pin 2, rectify the fault and re-test vehicle.

G1275267t15 : CHECK FOR FAILURE AT NAVIGATION MODULE
1 Connect OBT to navigation module MOST connector C3MN08C.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying 'Home screen menu' or Land Rover logo?

->Yes
Check/repair power feed and ground lines to navigation module. If power feed and ground lines ok, install a new navigation module. For additional information, refer to Navigation System Digital Versatile Disc (DVD) Unit Service and Repair

->No
Disconnect OBT and reconnect navigation module MOST connector C3MN08C.
GO to Pinpoint Test G1275267t16.

G1275267t16 : CHECK FOR FAILURE OF OPTICAL FIBRE TO AUDIO AMPLIFIER MODULE
1 Disconnect MOST connector C4ME27C from the audio amplifier module.
- Is the bright red light visible at harness side of connector C4ME27C pin 1?

->Yes
GO to Pinpoint Test G1275267t17.

->No
Fault is in optical fibre harness between C3MN08C pin 2 (or C23S pin 2, if Navigation module not installed to vehicle) and C4ME27C pin 1, rectify the fault and re-test vehicle.

G1275267t17 : CHECK FOR FAILURE AT AUDIO AMPLIFIER MODULE
1 Connect OBT to audio amplifier module MOST connector C4ME27C.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying 'Home screen menu' or Land Rover logo?

->Yes
Check/repair power feed and ground lines to audio amplifier module. If power feed and ground lines ok, install a new audio amplifier module. For additional information, refer to Subwoofer Amplifier Service and Repair

->No
Disconnect OBT and reconnect audio amplifier module MOST connector C4ME27C.
GO to Pinpoint Test G1275267t18.

G1275267t18 : CHECK FOR INSTALLATION OF BLUETOOTH MODULE
1 Check for installation of bluetooth module.
- Is there a bluetooth module installed to the vehicle?

->Yes
GO to Pinpoint Test G1275267t19.

->No
GO to Pinpoint Test G1275267t21.

G1275267t19 : CHECK FOR FAILURE OF OPTICAL FIBRE TO BLUETOOTH MODULE
1 Disconnect MOST connector C4MM22B from the bluetooth module.
- Is the bright red light visible at harness side of connector C4MM22B pin 1?

->Yes
GO to Pinpoint Test G1275267t20.

->No
Fault is in optical fibre harness between C4ME27C pin 2 and C4MM22B pin 1, rectify the fault and re-test vehicle.

G1275267t20 : CHECK FOR FAILURE AT BLUETOOTH MODULE
1 Connect OBT to bluetooth module MOST connector C4MM22B.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying 'Home screen menu' or Land Rover logo?

->Yes
Check/repair power feed and ground lines to bluetooth module. If power feed and ground lines ok, install a new bluetooth module. For additional information, refer to Bluetooth Module Bluetooth Module

->No
Disconnect OBT and reconnect bluetooth module MOST connector C4MM22B.
GO to Pinpoint Test G1275267t21.

G1275267t21 : CHECK FOR INSTALLATION OF DIGITAL AUDIO BROADCAST/SATELLITE RADIO MODULE
1 Check for installation of digital audio broadcast/satellite radio module.
- Is there a digital audio broadcast/satellite radio module installed to the vehicle?

->Yes
GO to Pinpoint Test G1275267t22.

->No
GO to Pinpoint Test G1275267t24.

G1275267t22 : CHECK FOR FAILURE OF OPTICAL FIBRE TO DIGITAL AUDIO BROADCAST/SATELLITE RADIO MODULE
1 Disconnect MOST connector C4ME43B from the digital audio broadcast/satellite radio module.
- Is the bright red light visible at harness side of connector C4ME43B pin 1?

->Yes
GO to Pinpoint Test G1275267t23.

->No
Fault is in optical fibre harness between C4MM22B pin 2 (or C4ME27C pin 2, if bluetooth module not installed) and C4ME43B pin 1, rectify the fault and re-test vehicle.

G1275267t23 : CHECK FOR FAILURE AT DIGITAL AUDIO BROADCAST/SATELLITE RADIO MODULE
1 Connect OBT to digital audio broadcast/satellite radio module MOST connector C4ME43B.
2 Switch OBT 'ON' and set to 2+0 option.
3 Select the visible LED option.
- Is the Rx lamp/LED permanently 'ON' and the HLDF screen permanently displaying 'Home screen menu' or Land Rover logo?

->Yes
Check/repair power feed and ground lines to digital audio broadcast/satellite radio module. If power feed and ground lines ok, install a new digital audio broadcast/satellite radio module. For additional information, refer to Satellite Radio Tuner Service and Repair

->No
GO to Pinpoint Test G1275267t24.

G1275267t24 : CHECK FOR FAILURE OF OPTICAL FIBRE TO INTERMEDIATE CONNECTOR C23S PIN 1
1 Disconnect intermediate connector C23S.
2 Switch OBT 'ON' and set to 2+0 option.
3 Press red 'TEST' button on OBT and observe harness side of connector C23S pin 1.
- Is the bright red light visible at harness side of connector C23S pin 1?

->Yes
No fault is indicated with the MOST Network, check all connectors and re-test vehicle.

->No
Fault is in optical fibre harness between C4ME43B pin 2, if digital audio broadcast/satellite radio module is installed (or C4MM22B pin 2, if digital audio broadcast/satellite radio module not installed or C4ME27C pin 2, if bluetooth module not installed), and C23S pin 1, rectify the fault and re-test vehicle.