Audio System - RAD2(R) Locks Up When Programming

SI M09 01 09
Programming/Coding Explanations

August 2009
Technical Service

SUBJECT
RAD2 Programming with ISTA/P 2.34.2 - No MOST Communication

MODEL
R56 (Cooper, Cooper S)
R55 (Cooper Clubman, Cooper S Clubman)
R57 (Cooper, Cooper S)

All vehicles equipped with option 6FC (Radio MINI boost CD, RAD2)

SITUATION

When programming a RAD2-equipped car with ISTA/P 2.34.2, a message is displayed: "During control module determination, it was ascertained that control modules connected to the MOST ring are not responding", followed by a second message that begins "The gateway GW is likely to be defective ......" The user is then asked to perform a gateway repair. After following the on-screen instructions, the measures plan directs to replace all MOST control modules.

CAUSE

The RAD2 GW locks up during identification with ISTA/P 2.34.2, causing no communication on the MOST ring.

PROCEDURE

If the GW is already locked up (the radio is still works even if you lock the car, and no warning gong sounds), perform a battery reset for 15+ minutes.

^ Only connect an ICOM-A to the vehicle (do not connect an ICOM-B).

^ Start a new programming session.





^ Ignore the message that tells you that the MOST-bus is not connected by selecting the OK button (see attachment above).

^ Determine the measures plan.

Depending on the situation, follow 1) or 2) below:





1. The measures plan shows that MOST modules have to be programmed (see attachment above):





^ Hook up the ICOM-B and wait until you have 2 green lights on the ICOM-B. Then accept the measures plan. Programming will take place, but the GW will lock up again during post processing (see attachment above). If so, perform another battery reset for 15+ minutes.

2. The measures plan shows no MOST modules:

Accept the measures plan and programming will take place (do not connect the ICOM-B).

ATTACHMENTS

View attachment's shown above in the bulletin's contents.