9-5 Sport Wagon (9600) L4-2.3L Turbo (B235) (2003)
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Correct the PWM ratio of the charge air control valve. At low atmospheric pressure, a greater PWM ratio is required to obtain the same air
mass/combustion.
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Correct the purge PWM ratio. At low atmospheric pressure, a greater PWM ratio is required to obtain the same purge flow.
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Protect the turbo from overrevving at low atmospheric pressure by limiting the max. permissible air mass per combustion.
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Block certain diagnoses:
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Block certain diagnoses at pressure lower than 72 kPa.
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Reactivate certain diagnoses at atmospheric pressure above 78 kPa.
Once the ignition has been turned off, all the sensors supplied with 5 V are activated for 15 minutes. After 15 minutes, only the memory is active.
Adapted values are stored in the memory.
NOTE: Adaptation is important to performance, drivability, fuel consumption and emissions. The control module must therefore not be disconnected or
in any other way be deenergized unnecessarily.
Diagnostics
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If the control module program memory ROM or working memory RAM is defective, diagnostic trouble code P0605 will be generated.
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If any internal function that affects throttle control is faulty, trouble codes P1601-P1611, P1613-P1614 or P1621 will be generated.
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If the atmosphere pressure sensor is defective, diagnostic trouble codes P1631- P1633 will be generated. The starting value for charge air pressure
will be used as a substitute value and purging will be blocked.