Volvo

The pedal message is used to calculate fuel injection.
The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.
The (VECU) Vehicle Electronic Control Unit is linked to the Engine Control Module (ECM) via these data lines.

Conditions for diagnostic trouble code (DTC):
1) Functional disturbance, idle validation switches
2) Accelerator pedal sensor value changes and there is no change in idle validation switch value, or vice versa.

Observable symptoms
1) Missing kick-down effect
2) The engine does not respond when accelerator pedal is pressed.

Probable cause
1) Accelerator pedal, Sensor
2) Wiring harness
3) Short circuit
4) Open circuit
5) Idle validation switch

The pedal message is used to calculate fuel injection.
The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.
The (VECU) Vehicle Electronic Control Unit is linked to the Engine Control Module (ECM) via these data lines.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A17.PB:8 is more than 4.7?V

Observable symptoms
1) The engine does not respond when accelerator pedal is pressed.
2) Missing kick-down effect

Probable cause
1) Connector
2) Accelerator pedal, Sensor
3) Signal wire, Short circuit to higher voltage
4) Open circuit, Ground wire

The pedal message is used to calculate fuel injection.
The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.
The (VECU) Vehicle Electronic Control Unit is linked to the Engine Control Module (ECM) via these data lines.

Conditions for diagnostic trouble code (DTC):
1) Signal unavailable or not regularly updated

Probable cause
1) Accelerator pedal
2) Vehicle Control Unit (VECU)

The Fuel Pressure Sensor is used to detect low fuel pressure system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Fuel pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:16 is less than 0.29?V

Probable cause
1) Engine Fuel Pressure Sensor
2) Engine wiring harness
3) Engine control module (ECM)

The Fuel Pressure Sensor is used to detect low fuel pressure system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Fuel pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) Fuel pressure too low

Observable symptoms
1) Difficult starting
2) Low Power

Probable cause
1) Fuel filter
2) Fuel system
3) Overflow valve
4) Fuel pump
5) Engine Fuel Pressure Sensor
6) Air in the fuel system

The Fuel Pressure Sensor is used to detect low fuel pressure system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Fuel pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:16 is more than 4.75?V

Diagnostic monitor condition
1) Key in ON position

Probable cause
1) Engine Fuel Pressure Sensor
2) Short circuit to 5V, Signal wire
3) Wiring harness
4) Engine control module (ECM)

The Fuel Pressure Sensor is used to detect low fuel pressure system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Fuel pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:16 is less than 0.2?V

Diagnostic monitor condition
1) Key in ON position

Probable cause
1) Open circuit, Signal wire
2) Open circuit, Supply wire
3) Engine wiring harness
4) Engine Fuel Pressure Sensor