66100-98301 Cock Assembly, Fuel Suzuki
DT3.5LN, DT3.5LT, DT3.5LX, DT3.5LZ, DT3.5SN, DT3.5ST, DT3.5SX, DT3.5SZ
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Table 1
Diagnostic Codes Table
CDL Code and Description Conditions which Generate the Code System Response
1491-3 Right Turbo Turbine Inlet Temperature Sensor voltage above normal The ECM detects a duty cycle that is greater than 96 percent for 10 seconds. The code is logged.
If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
1491-4 Right Turbo Turbine Inlet Temperature Sensor voltage below normal The ECM detects a duty cycle that is less than 4 percent for 10 seconds.
1491-8 Right Turbo Turbine Inlet Temperature Sensor abnormal frequency, pulse width, or period The ECM detects a sensor frequency that is greater than 600 Hz or less than 400 Hz.
1492-3 Left Turbo Turbine Inlet Temperature Sensor voltage above normal The ECM detects a duty cycle that is greater than 96 percent for 10 seconds. The code is logged.
If the signal from the other exhaust temperature sensor is OK, the signal from that sensor is used. If the signal from the other exhaust temperature sensor is not OK, a default value of 0 °C (32 °F) is used.
1492-4 Left Turbo Turbine Inlet Temperature Sensor voltage below normal The ECM detects a duty cycle that is less than 4 percent for 10 seconds.
1492-8 Left Turbo Turbine Inlet Temperature Sensor abnormal frequency, pulse width, or period The ECM detects a sensor frequency that is greater than 600 Hz or less than 400 Hz. System OperationUse this procedure to troubleshoot any suspect problems with the sensor for the left turbocharger turbine inlet temperature or the right turbocharger turbine inlet temperature.The Pulse Width Modulated Sensor (PWM) provides a signal to the ECM. The PWM signal is used to represent certain engine operating conditions. The sensors receive 8.0 0.4 VDC from a regulated power supply.The ECM performs an automatic calibration of these sensors whenever the ECM is powered and the engine has been off for at least 5 seconds.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 following components can cause problems with the power supply:
Electrical connector or wiring
Sensor
ECMThe most likely cause of a problem is a problem with an electrical connector or wiring. The least likely cause is a problem with the ECM.
Illustration 1 g02604056
Schematic of the PWM sensors for the sensor signal circuit
Illustration 2 g02604098
Location of the PWM sensors (top engine view)
(1) Sensor for the right turbocharger turbine inlet temperature
(2) Sensor for the left turbocharger turbine inlet temperature
Illustration 3 g02604176
Location of the connectors that are for the PWM sensor circuit (Front engine view)
(3) Right rail connector
(4) J2/P2connector for the secondary ECM
(5) J1/P1connector for the primary ECM
(6) Left rail connector
Illustration 4 g01279964
Terminal locations at the P1 ECM connector that are for the sensors for the turbocharger turbine inlet temperature
(P1-5) Digital return
(P1-18) Digital return
Illustration 5 g01279871
Terminal locations at the P2 ECM connector that are for the sensors for the turbocharger turbine inlet temperature
(P2-29) Digital supply
(P2-65) Left turbocharger turbine inlet temperature
(P2-73) Right turbocharger turbine inlet temperature
(P2-92) Digital return
Illustration 6 g01826777
Terminal locations at the left rail connector that are for the sensors for the turbocharger turbine inlet temperature
(Terminal 49) Left turbocharger turbine inlet temperature
(Terminal 63) Digital supply
(Terminal 69) Digital return
Illustration 7 g01534394
Terminal locations at the right rail connector that are for the sensors for the turbocharger turbine inlet temperature
(Terminal 49) Right turbocharger turbine inlet temperature
(Terminal 63) Digital supply
(Terminal 69) Digital return
Illustration 8 g01240891
Sensor connector
(Terminal 1) Sensor supply
(Terminal 2) Sensor return
(Terminal 3) Signal
Table 2
Troubleshooting Test Steps Values Results
1. Check for an "Active" Diagnostic Codes
A. Connect Caterpillar Electronic Technician (ET) to the service tool connector.
B. Monito
Parts cock Suzuki:
66100-98300
66100-98300 Cock Assembly, Fuel
DT3.5LN, DT3.5LT, DT3.5LX, DT3.5LZ, DT3.5SN, DT3.5ST, DT3.5SX, DT3.5SZ