Checking components

If the engine control module (ECM) registers that the signals from the steering wheel buttons indicate that they are all pressed simultaneously (which is impossible due to button design) for 0.3 seconds, diagnostic trouble code ECM-9200 Faulty signal is generated. Using VIDA vehicle communication, check that the parameters "Cruise control ON/OFF button", "Cruise control resume button", "Cruise control SET- button" and "Cruise control SET+ button" indicate correct values. If all parameters indicate ON, the fault is permanent. If the buttons work properly, the fault is intermittent.

Permanent fault 

Check whether the steering wheel module (SWM) has stored any diagnostic trouble codes that indicate a fault in the cruise control buttons. Any diagnostic trouble codes that are stored should be fault traced first. If the steering wheel module (SWM) does not contain any diagnostic trouble codes indicating a fault in the cruise control buttons, check the buttons' electric switch and the connection to the contact reel in the steering wheel for short circuits and open circuits.

Intermittent fault 

Use the diagnostic trouble code's frozen values  , status identifiers  and counter  to determine the operating conditions when the fault was detected, the fault's current status and any degree of intermittence of the fault. The values show the problem's current status and how intermittent the problem is. The operating conditions can be, for example, whether the engine was running, what the speed of the vehicle was and what the battery voltage in the system was. If for example the trouble code was stored when battery voltage was low and engine speed was equal to 0 rpm, it could indicate that the fault arose when the vehicle was stationary with the ignition on for a long period, thereby draining the battery, or that the fault arose when the customer was attempting to start the vehicle.

HINT: Using VIDA vehicle communication, check that the parameters "Cruise control ON/OFF button", "Cruise control resume button", "Cruise control SET- button" and "Cruise control SET+ button" indicate correct values. 

For markets where upgraded software, released during year 2006 or later, is available, the solution may be to download the upgraded software. Since detection time has been increased from 0.3 to 1.8 seconds, the upgraded software will be more tolerant to short, intermittent disruptions.

Remedy as necessary.

Other information: 

• See Connecting the breakout box
• See Replacing cruise control lever/turn signal indicator switch 
• For information about signals, see Signal specification .
• See Identifying upgraded software ECM/ETM
• See Checking wiring and terminals

Caution: In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed:

• Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
• Then turn on the ignition and turn it off again.
• Wait another three minutes, but if the electric cooling fan is running you have to wait another two minutes after the cooling fan has stopped, to ensure that Electronic throttle module (ETM) is shut off correctly.

If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.

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  Refer to Information