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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti Lock Brake System (Abs) & Brake Control Module (BCM) Diagnostic Trouble Codes >> Abs-0010: Left Front Wheel Sensor. Signal Missing. Intermittent Fault (1999-2001) >> Signal missing. Intermittent fault >> No signal. Intermittent fault >> Checking the wiring and connections

Checking the wiring and connections

Check the connectors of the control unit and the relevant wheel sensor for intermittent contact resistance and oxidation, as described in Contact resistance and oxidation .

Check the wires between relevant wheel sensor connector:

Diagnostic trouble code ABS-0010 Front LH wheel sensor 

#1 and control unit #34

Diagnostic trouble code ABS-0020 Front RH wheel sensor 

#1 and control unit #4

for an intermittent open circuit as described in Open-circuit, intermittent faults , for an intermittent short circuit to ground as described in Short-circuit to ground, intermittent faults , and for an intermittent short circuit to voltage supply as described in Short-circuit to supply voltage, intermittent faults .

Check the wires between relevant wheel sensor connector:

Diagnostic trouble code ABS-0010 Front LH wheel sensor 

#2 and control unit #33

Diagnostic trouble code ABS-0020 Front RH wheel sensor 

#2 and control unit #3

for an intermittent open circuit as described in Open-circuit, intermittent faults , for an intermittent short circuit to ground as described in Short-circuit to ground, intermittent faults , and for an intermittent short circuit to voltage supply as described in Short-circuit to supply voltage, intermittent faults .

Do the necessary corrective action.

Additional information: 

Fig 1: Identifying Terminal Connectors
GLL104060Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.