G862187T16 : Check For Failure of Optical Fibre to Audio Amplifier Module

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

G862187t16 : 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 G862187t17.G862187T17 : Check For Failure at Audio Amplifier Module

->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.