191351 Volvo.Penta Nipple

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 code is logged. The value of the parameter is set to a gauge pressure of 600 kPa (87 psi).
94-4 Fuel Delivery Pressure Sensor voltage below normal The ECM detects signal voltage that is below normal for eight seconds.
100-3 Engine Oil Pressure Sensor voltage above normal The ECM detects signal voltage that is above normal for eight seconds. The code is logged. The value of the parameter is set to a gauge pressure of 600 kPa (87 psi).
100-4 Engine Oil Pressure Sensor voltage below normal The ECM detects signal voltage that is below normal for eight second.
127-3 Transmission Oil Pressure Sensor voltage above normal The ECM detects signal voltage that is above normal. The code is logged.
127-4 Transmission Oil Pressure Sensor voltage below normal The ECM detects signal voltage that is below normal.
177-3 Transmission Oil Temperature Sensor voltage above normal The ECM detects signal voltage that is above normal. The code is logged.
177-4 Transmission Oil Temperature Sensor voltage below normal The ECM detects signal voltage that is below normal.
1785-3 Intake Manifold Pressure Sensor voltage above normal The ECM detects signal voltage that is above normal for two seconds. The code is logged. The value of the parameter is set to a gauge pressure of 100 kPa (15 psi).
1785-4 Intake Manifold Pressure Sensor voltage below normal The ECM detects signal voltage that is below normal for two seconds. System Operation Use this procedure to troubleshoot any suspect problems with the following sensors:
Fuel pressure sensor
Engine oil pressure sensor
Transmission oil pressure sensor
Transmission oil temperature 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 at sea level. This calibration value is then checked 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 g01379617
Schematic for the analog sensors
Illustration 2 g01379678
Locations of the connectors for the analog sensors (rear engine view)
(1) J2/P2 ECM connectors
(2) Connector for the transmission oil pressure sensor
(3) Connector for the transmission oil temperature sensor
Illustration 3 g01379711
Sensor locations (left side engine view)
(4) Oil pressure sensor
Illustration 4 g01379746
Sensor locations (top front engine view)
(5) Intake manifold pressure sensor
(6) Fuel pressure sensor
Illustration 5 g01379969
Terminal locations at the P2 ECM connector for the analog sensors
(P2-15) Intake manifold pressure sensor
(P2-16) Transmission oil pressure sensor
(P2-17) Analog return
(P2-27) Transmission oil temperature sensor
(P2-28) Engine oil pressure sensor
(P2-40) Fuel pressure sensor
(P2-72) Analog sensor supply
Illustration 6 g01159881
Terminal locations at the sensor connector
(Terminal A) Sensor supply
(Terminal B) Sensor return
(Terminal C) Signal
Table 2
Troubleshooting Test Steps Expected Result Results
1. Check for Active and Logged Diagnostic Codes
A. Connect Cat Electronic Technician (ET) to the service tool connector.
B. Turn the keyswitch to the ON position.
C. Monitor the diagnostic codes on Cat ET. Check and record any diagnostic codes.
Note: Wait at least 30 seconds in order for the diagnostic codes to become active.
D. Determine if a diagnostic code has occurred several t