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Checking auxiliary signals
Check signal for rough-road recognition.
Notes:
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◆ If the ABS/EDL control unit detects a spinning wheel, the ABS/EDL control unit generates the rough-road signal.
If the engine control unit detects the rough-road signal, the misfire detection is switched off in engine control unit.
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◆ Only check the rough-road signal if the fault "18014 (P1606) Rough-road detection/engine specified torque ABS CU, electrical fault in circuit" is stored.
The possible additional fault "Misfire" is then a sequential fault and can be ignored.
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◆ The rough- road signal is transferred to the engine control unit from the ABS/EDL control unit via the CAN bus. Check data exchange between engine control unit and other CAN-control units =>Page 24-189.
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