Checking cables

Check signal cable (+) between control module #A42 and transmission connector #4 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Check signal cable (-) between control module #A41 and transmission connector #3 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

To connect the breakout box, see connecting the breakout box
To access the control module, see Replacing the engine control module (ECM)
To access/replace the heated oxygen sensor (HO2S) Heated oxygen sensor (HO2S), replacing
For information about signals, see Signal specification .

Fig 1: Identifying 4-Bit connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.