20523738 Volvo.Penta Cover

Table 1
Diagnostic Codes Table
Code and Description Conditions which Generate this Code System Response
94-3 Fuel Delivery Pressure Sensor : Voltage Above Normal The Electronic Control Module (ECM) detects signal voltage that is above normal for eight seconds.
The ECM has been powered for at least two seconds. The code is logged.
The value of the parameter is set to a gauge pressure of 500 kPa (75 psi).
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
94-4 Fuel Delivery Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is below normal for eight seconds.
The ECM has been powered for two seconds. The code is logged.
The value of the parameter is set to a gauge pressure of zero.
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
100-3 Engine Oil Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is above normal for eight seconds.
The ECM has been powered for at least two seconds. The code is logged.
The value of the parameter is set to a gauge pressure of zero.
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
100-4 Engine Oil Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is below normal for eight second.
The ECM has been powered for two seconds.
100-10 Engine Oil Pressure Sensor : Abnormal Rate of Change The ECM detects signal voltage that is not changing at a normal rate for thirty seconds. Engine speed must be above 600 rpm.
The ECM has been powered for two seconds.
164-3 Injector Actuation Pressure : Voltage Above Normal The ECM detects signal voltage that is above normal for one second. A snapshot is triggered.
The value of the parameter will be set to 8 MPa (1160 psi).
The engine will run on a default torque map that is stored in the ECM.
The engine will experience a reduction in power.
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
164-4 Injector Actuation Pressure : Voltage Below Normal The ECM detects signal voltage that is below normal for one second.
274-3 Atmospheric Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is above normal for thirty seconds.
The ECM has been powered for at least two seconds. The code is logged.
The value of the parameter is set to an absolute value of 100 kPa (14.5 psi).
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
274-4 Atmospheric Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is below normal for thirty seconds.
The ECM has been powered for two seconds.
1589-3 Turbocharger Inlet Air Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is above normal for one second.
The ECM has been powered for at least three seconds. The code is logged.
The value of the parameter is set to 14 kPa (2 psi). Engine power is derated 10 percent.
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
1589-4 Turbocharger Inlet Air Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for three seconds.
1785-3 Intake Manifold Pressure Sensor : Voltage Above Normal The ECM detects signal voltage that is above normal for two seconds.
The ECM has been powered for at least two seconds. The code is logged.
The value of the parameter is set to a gauge pressure of zero.
The ECM will illuminate the check engine lamp. The ECM will pulse the action lamp and the action alarm at a rate of .5 Hz per second.
1785-4 Intake Manifold Pressure Sensor : Voltage Below Normal The ECM detects signal voltage that is below normal for two seconds.
The ECM has been powered for two seconds.
1785-10 Intake Manifold Pressure Sensor : Abnormal Rate of Change The ECM detects signal voltage that is not changing at a normal rate for thirty seconds. Engine speed must be above 1000 rpm.
The ECM has been powered for two seconds. System OperationUse this procedure to troubleshoot any suspect problems with the following sensors:
Fuel pressure sensor
Engine oil pressure sensor
Injection actuation pressure sensor
Atmospheric pressure sensor
Turbocharger inlet pressure sensor
Intake manifold pressure sensorThe supply voltage is routed to terminal A of each sensor connector. The sensor return is routed to terminal B of each sensor connector. The sensor signal is routed to terminal C of each sensor connector. The ECM provides short circuit protection for the internal power supply. A short circuit to the battery will not damage the internal power supply.The ECM performs an automatic calibration of these sensors whenever the ECM is powered and the engine is off for at least five seconds. During an automatic calibration, the ECM calibrates pressure sensors to the value of the atmospheric pressure sensor and against an acceptable offset pressure range.The ECM continuously outputs a pull-up voltage on the input terminal from an analog sensor. The ECM uses this pull-up voltage in order to detect an open or a short in the signal circuit. When the ECM detects the presence of a voltage that is above the normal range of the sensor on the signal circuit, the ECM will generate an open circuit diagnostic code 3 for that sensor. When the ECM detects the absence of the pull-up voltage on the signal circuit, the ECM will generate a short circuit diagnostic code 4 for that sensor. The presence of pull-up voltage at the sensor connector indicates that the wires from the sensor connector to the ECM are not open or shorted to ground.
Illustration 1 g01712033
Typical schematic
Illustration 2 g01710942
Left