Checking components and wiring

Fig 1: Identifying Ignition On Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on
Activate the read off of the signals from the accelerator pedal (AP) position sensor
Check that the value for both signals is approximately 8% when the accelerator pedal (AP) is unaffected and approximately 82% when the pedal is fully depressed.
Check the engine control module (ECM) and accelerator pedal (AP) position sensor connectors. Check for contact resistance, play and oxidation.

Check the voltage supply from Engine control module (ECM) #B9 (#B19) to accelerator pedal position sensor #6.

Check the ground lead from engine control module (ECM) terminal #B5 (#B15) to accelerator pedal (AP) position sensor terminal #4.

Check the signal cable between Engine control module (ECM) #B25 (#B35) and accelerator pedal position sensor #2.

Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box
- For information about signals, see Signal specification
- To access and replace the accelerator pedal (AP) position sensor, see Accelerator pedal (AP), replacing
- To fault-trace the wiring and terminals, see Contents .
Fig 2: Identifying 6-Bit Connector
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying VCT2000
Courtesy of VOLVO CARS OF NORTH AMERICA.