| Installation occurs in reverse order. |
| After installing the engine control unit, it is necessary to carry out the following steps: |
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| Perform adaptation of the throttle valve control unit -J338 - → Chapter. |
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| For vehicles with cruise control system: Activate the cruise control → Chapter. |
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| On vehicles fitted with automatic gearbox: Learn kickdown operating point → Chapter. |
| –
| Interrogate the fault memory of the new engine control unit and if necessary erase the fault memory → Chap. 01-1. |
Note | Comply with the applicable safety instructions for test drives → Chap. 24-1. |
| During the test drive the following operating conditions must be fulfilled: |
| t
| The coolant temperature should rise beyond 80°C. |
| t
| Once the temperature has been reached the following operating conditions must be reached a number of times: |
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| Idling speed
partial load
enrichment
full load
trailing throttle |
| t
| At “full load” engine speed must be increased to more than 3500 rpm. |
| –
| Subsequently interrogate the fault memory of the engine control unit again. |
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