|
|
|
Maintenance instruction for sunray hfc4da1-2c china-IV diesel engines
130 3. DTC P0087 The fuel pressure is below the lower limit.
P0088 The fuel pressure is above the upper limit.
P0191 The forward drift of common rail pressure sensor is too large. P0192 The common rail pressure sensor output voltage is below the lower limit (the wiring P0193 The common rail pressure sensor output voltage is above the upper limit (the
P0194 The reverse drift of common rail pressure sensor is too large.
P1011 The positive deviation of rail pressure control is above the upper limit.
P1012 The positive deviation of rail pressure control exceeds the upper limit greatly.
P1013 The negative deviation of rail pressure control is below the lower limit.
Fault Description: The common rail pressure sensor shall make response to the change of fuel pressure in common z A 5V reference voltage circuit z A low reference voltage circuit z A common rail pressure sensor signal circuit If the common rail pressure sensor signal detected by ECU is beyond the set range, relevant DTC shall be generated. Diagnosis Hint: When the ignition switch is turned on with engine off, the pressure in common rail pipe is zero and During engine starting, any pressure change in the common rail pipe should be detected by the common rail pressure The normal common rail pressure sensor shall make quick response to the change of accelerator pedal position, so its Common rail pressure sensor 5V power supply Rail pressure signal Ground
|