Checking components and wiring

Fig 1: Identifying Ignition Switch OFF Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Check the accelerator pedal position sensor and engine control module (ECM) connectors. Check for contact resistance and oxidation.
Check the power supply cable (5 volts) between engine control module (ECM) terminal #B9 (#B19) and accelerator pedal (AP) position sensor terminal #6 (wiring side). Check for an open-circuit. Check for a short-circuit to ground.

Check the signal ground cable between engine control module (ECM) terminal #B5 (#B15) and accelerator pedal (AP) position sensor terminal #4 (wiring side). Check for an open-circuit.

HINT: With the ignition on, the power supply from the engine control module (ECM) must be approximately 5 V measured between accelerator pedal (AP) position sensor terminals #6 (wiring side) and #4 (wiring side).

Check the signal cable between engine control module (ECM) terminal #B17 (#B27) and accelerator pedal (AP) position sensor terminal #5. Check for an open-circuit. Check for a short-circuit to ground.

Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent.

Remedy as necessary.

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

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

Fig 4: Identifying Accelerator Pedal (AP) Position Sensor
Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Verification