30-2 Fault Tracing

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30-2 Fault Tracing

General Fault tracing of cables and connectors Contact problems Contact resistance and oxidation Open circuit Fault Codes MID 128, PID 26 Estimated Percent Fan Speed Circuit description MID 128, PID 45 Inlet air heater status MID 128, PID 94 Fuel Delivery Pressure Measurements MID 128, PID 97 Water in fuel indicator Measurements MID 128, PID 98 Engine oil level b Circuit description Measurements MID 128, PID 100 Engine oil pressure MID 128, PID 105 Intake manifold temperature Measurements MID 128, PID 106 Air inlet pressure Component specification Measurements MID 128, PID 107 Air filter pressure drop Measurements MID 128, PID 108 Barometric pressure Circuit description MID 128, PID 110 Engine coolant temperature Measurements MID 128, PID 111 Coolant level MID 128, PID 153 Crankcase pressure Component specification Measurements MID 128, PID 158 ECU battery potential Circuit description Measurements MID 128, PID 173 Exhaust gas temperature Circuit description Measurements MID 128, PID 175 Engine oil temperature Circuit description Measurements MID 128, PID 190 Engine speed Circuit description Measurements MID 128 / 144, PPID 4 Starter input sensor Circuit description Measurements MID 128, PPID 8 Piston Cooling Oil Pressure Component specification Measurements MID 128, PPID 19 Internal EGR Measurements MID 128, PPID 55 ECU temperature Circuit description MID 128, PPID 98 Engine sync acknowledge A Circuit description Measurements MID 128, PPID 332 Thermostat Circuit description Measurements MID 128, SID 1/2/3/4/5/6 Injector # 1-6 Measurements MID 128, SID 21 Engine position Measurements MID 128, SID 22 Timing sensor, crank Circuit description Measurements MID 128, SID 32, Wastegate output driver MID 128, SID 33 Fan clutch output Circuit description MID 128, SID 70 Air inlet heater driver #1 MID 128, SID 211 Sensor Supply Voltage #2 (+5V DC)Circuit description MID 128 / 144, SID 231 SAE J1939 Circuit description Measurements MID 128, SID 232 5 V supply Circuit description MID 128, SID 240 Program memory Circuit description MID 128 / 144, SID 253 Calibration memory EEPROM Circuit description Measurements No fault code d c Measurements Checking the wiring Checking supply cable, fuel sensor Checking negative cable, fuel sensor Checking the signal cable for interruption or shortcircuit Checking fuel pressure sensor Checking supply cable, water in fuel switch Checking negative cable, water in fuel switch Checking water in fuel switch Checking oil level sensor Checking supply cable, oil pressure sensor Checking negative cable, oil pressure sensor Checking signal cable, oil pressure sensor Checking oil pressure sensor Checking signal cable voltage, intake manifold (pressure/)temperature sensor Checking negative cable, intake manifold pressure/temperature sensor Checking the sensor cable for open circuit or shortcircuit Checking intake manifold temperature sensor Checking supply cable, intake manifold pressure sensor Checking signal cable, intake manifold pressure sensor Checking air inlet pressure sensor Checking supply cable, air filter pressure switch Checking air pressure switch Checking coolant temperature sensor Checking the sensor cable for open circuit or shortcircuit Checking supply cable, coolant level switch Checking negative cable, coolant level switch Checking coolant level switch Checking crankcase pressure sensor Checking signal cable, air filter temperature switch Checking negative cable, air filter temperature switch Checking the sensor cable for open circuit or shortcircuit Checking air inlet temperature sensor Checking negative cable, exhaust gas temperature sensor Checking exhaust gas temperature sensor Checking negative cable, oil temperature switch Checking signal cable, oil temperature switch Checking oil temperature sensor Checking starter motor relay Checking negative cable, air filter pressure switch Checking stop signal cable between ECU and CIU/DCU Checking signal cable, coolant temperature switch Checking negative cable, coolant temperature switch Checking negative cable, piston cooling oil temperature switch Checking supply cable, piston cooling oil temperature switch Checking IEGR coil Checking IEGR solenoid Checking supply cable, coldstart valve Checking negative cable, coldstart valve Trimming the injector Checking the injector wiring Checking IEGR wiring Checking camshaft sensor wiring Checking camshaft sensor Checking flywheel sensor wiring Checking flywheel sensor Checking negative cable, wastegate valve Checking supply cable, wastegate valve Checking the wastegate valve Checking preheater relay Checking CAN bus cable Checking the CAN bus cable Checking negative cable, crankcase pressure sensor Checking signal cable, crankcase pressure sensor Checking supply cable, crankcase pressure sensor Checking the fan speed sensor 10 28 11 29 23 31 6 5 24 8 21 22 25 12 15 30 9 17 19 13 14 20 2 16 Description for wiring diagram TWD1663GE / TWG1663GE

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