G862187T3 : Initiate Ring Break Diagnostic (RBD) & Read DTCS

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.

G862187t3 : 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 G862187t4.G862187T4 : Check For Failure at Intermediate Connector C23T Pin 2

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