Section 110-0030 Engine - Engine and Mounting fault code, pressing the bottom of the will go back to the previous code. A special diagnostic data reader (INSITE) is available that can be plugged into the engine computer memory via the onboard diagnostic test point (9). The reader is used to extract information related to the cause of the problem. Once the malfunction has been corrected, the Electronic Fuel System will return the engine to normal operation. The data reader can now distinguish between active codes and those stored in the historic code memory (inactive codes). Inactive codes can only be viewed using the data reader.
The fault code recorded in the ECM memory will remain until it is erased by a technician. On machines which have a Low Idle Adjustment feature, this switch can also be used to increase or decrease (in increments of 25 RPM), the idle or intermediate speed of the engine. Operation Numbers in parentheses refer to Fig. 2. The machine is equipped with the Quantum engine protection system which records fault codes in the ECM (1), when the engine malfunctions and when an out-of-range condition is found. WARNINGS The operator of a Quantum-equipped vehicle must not attempt to use or read a data reader of any kind while the vehicle is operating.
Doing so can result in loss of control, which may cause vehicle damage and may result in personal injury. When the 'Stop' light (6) on the dash panel illuminates, the computer has detected a major malfunction in the engine that requires immediate attention. It is the operators responsibility to shut down the engine to avoid serious damage. When an out-of-range conditions is found, the 'Fluid' light (8) illuminates and the engine protection system is initiated. The 'Fluid' light will start to flash if the out- of-range condition continues to get worse. The operator MUST shut down the engine to avoid serious damage.
The operator can check for active faults by turning the ignition key switch to the 'OFF' position, switching the diagnostic switch 'ON' and then turning the ignition key switch to position '1'. If no active fault codes are recorded, all three ('Stop', 'Warning' & 'Fluid') lights will come on and stay on. If active codes are recorded, all three lights will come on momentarily. The yellow ('Warning') and red ('Stop') lights will begin to flash the code of the recorded fault. The fault codes flash in the following sequence: the yellow light flashes once, then there is a pause where both lights are off. Then the numbers of the recorded fault code flash in red.
There is a pause between each number. When the number is done, the yellow light flashes again. e.g. yellow flashes once - pause - red flashes twice - pause - red flashes three times - pause - red flashes five times - pause - yellow flashes once, indicates fault code 235. The number will repeat in the same sequence until the the system is advanced to the next active fault code or the diagnostic switch is switched to the 'OFF' position. Refer to 'Electronic Fuel System Diagnostic Codes' table for fault code descriptions. The engine should not be restarted after it has been shut down after activation of the engine protection system unless the problem has been diagnosed and corrected.
Conditions that will cause the amber 'Fluid' light (8) to come on are; Low coolant level, High coolant temperature, Idle validation/throttle pedal switch mismatch, High intake manifold temperature, Low oil pressure and High fuel rail pressure. Whenever the 'Stop' light (6), 'Warning' light (7) or 'Fluid' light (8) come on, the Electronic Fuel System computer will determine where the problem is and will store this information in its memory. If the malfunction is intermittent, the lights will come on and go off as the computer senses the changing engine condition. SM 1571 12-98 4