99AA-2-0320 Tohatsu OIL PIPE

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 one second.
The ECM has been powered for at least three seconds. The code is logged.
The ECM flags fuel pressure as invalid data.
The value of the parameter is set to a default value.
94-4 Fuel Delivery 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.
100-3 Engine Oil 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 ECM flags oil pressure as invalid data.
The value of the parameter is set to a default value.
100-4 Engine Oil 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.
101-3 Crankcase 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 zero.
101-4 Crankcase Air Pressure Sensor voltage below normal The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for at least three seconds.
110-3 Engine Coolant Temperature 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 −40 °C (−40 °F).
110-4 Engine Coolant Temperature Sensor voltage below normal The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for three seconds.
273-0 Turbocharger Outlet Pressure Sensor high - most severe (3) The ECM reads turbocharger compressor outlet pressure above 200 kPa (29 psi). The engine speed is within 50 rpm of low idle or effective fuel equals 20. The code is logged.
The value of the parameter is set to zero.
273-3 Turbocharger Outlet 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.
273-4 Turbocharger Outlet 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.
274-3 Atmospheric 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 45 kPa (6.5 psi).
274-4 Atmospheric 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.
275-3 Right Turbocharger Inlet 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 zero.
275-4 Right Turbocharger Inlet 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.
276-3 Left Turbocharger Inlet 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 zero.
276-4 Left Turbocharger Inlet 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.
279-3 Aftercooler Coolant Temperature Sensor (Front) 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 ECM flags aftercooler coolant temperature as invalid data. The sensor output is ignored by the engine monitoring system.
279-4 Aftercooler Coolant Temperature Sensor (Front) voltage below nor The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for three seconds.
289-3 Fuel Pressure Sensor - Before Fuel Filter 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 ECM flags fuel pressure as invalid data.
The value of the parameter is set to a default value.
289-4 Fuel Pressure Sensor - Before Fuel Filter voltage below normal The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for three seconds.
542-3 Engine Oil Pressure Sensor - Before Oil Filter 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 ECM flags oil pressure as invalid data.
The value of the parameter is set to a default value.
542-4 Engine Oil Pressure Sensor - Before Oil Filter voltage below normal The ECM detects signal voltage that is below normal for one second.
The ECM has been powered for three seconds. System OperationUse this procedure to troubleshoot any suspect problems with the following sensors:
Aftercooler temperature sensor
Atmospheric pressure sensor
Coolant temperature sensor
Crankcase pressure sensor
Filtered engine oil pressure sensor
Filtered fuel pressure sensor
Left turbocharger inlet pressure sensor
Right turbocharger inlet pressure sensor
Turbocharger outlet pressure sensor
Unfiltered engine oil pressure sensor
Unfiltered fuel pressure sensorThe analog sensor 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