| Checking engine speed signal |
| The engine speed signal is required for the rev counter, air conditioner and automatic gearbox. |
| However, since the signal cannot be read in the form in which it is generated by the engine speed sender -G28-, it has to be processed by the engine control unit. |
| To obtain engine speed, proceed as follows: |
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| Connect fault reader and carry out “Automatic test sequence”. |
| No faults relating to a missing “engine speed signal” should be stored in any of the control units. |
| If one of the control units indicates a fault: |
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