Troubleshoot Engine-side Trouble Engine-side DTC List
Common rail At least 900 min-1 pressure does not rise to necessary range.
0088
Abnormally high common rail pressure (1st stage)
Abnormal increase in common rail pressure
Actual common rail pressure falls to 15 MPa or lower
Behavior during trouble
About 3 sec. High engine vibration, unstable idling speed, output reduction, revving problems, black smoke, and excess output are possible. Back-up: Injection quantity restriction 3 (multi-injection stop) Target common rail pressure upper limit (80 MPa)
・ Key switch input voltage Common rail pres- About 5 sec. is 18 V or higher. sure exceeds 185 ・ DTC: 0088, 0192, 0193, MPa. and 1635 are not detected. ・ Actual common rail pressure is at least 2 MPa and engine speed is at least 70 min-1.
Recovery from failure *1
Conceivable cause Fuel system clogged (element), line (hose), etc. blocked Wiring problem (short) between ECM and common rail pressure sensor Injector problem Common rail pressure sensor problem Supply pump problem Pressure limiter problem
AL
Abnormally low common rail pressure (supply pump not sending pressure)
Trouble judgment time
TE RN
0087
DTC setting conditions
High engine vibration, unstable idling speed, output reduction, revving problems, black smoke, and excess output are possible. Back-up: Injection quantity restriction 3 (multi-injection stop) Target common rail pressure upper limit (80 MPa)
*1
IN
DTC name
Fuel system line (hose), etc. blocked Air in fuel system (check hose connection) Common rail pressure sensor problem Supply pump problem
CO US N F E ID O E F N TS TI M AL GL : F O OR BA T L H
E
Detected item
Preconditions when DTC is set
DTC
Abnormally high common rail pressure (2nd stage)
Abnormal increase in common rail pressure
・ Key switch input voltage is 18 V or higher. ・ DTC: 0088, 0192, 0193, and 1635 are not detected. ・ Actual common rail pressure is at least 2 MPa and engine speed is at least 70 min-1.
Common rail pres- About 5 sec. sure abnormality (1st stage) occurs and common rail pressure exceeds 190 MPa.
High engine vibration, unstable idling speed, output reduction, revving problems, black smoke, and excess output are possible. Back-up: Injection quantity restriction 3 (multi-injection stop) Target common rail pressure upper limit (80 MPa)
*1
0089
Common rail pressure abnormality (supply pump sending too much pressure)
Abnormal increase in common rail pressure
・ Key switch input voltage is 18 V or higher. ・ DTC: 0089, 0192, 0193, and 1635 are not detected. ・ Engine coolant temperature at least 60 ℃ and engine speed at least 375 min-1 ・ The ratio for the fuel flow command signal to the SCV (suction control valve) is 40 % or less, or the SCV target pressure send quantity is 90 mm3/ sec. or less.
The actual com- About 5 sec. mon rail pressure is at least 40 MPa above the target common rail pressure.
High engine vibration, unstable idling speed, output reduction, revving problems, black smoke, and excess output are possible. Back-up: Injection quantity restriction 3 (multi-injection stop) Target common rail pressure upper limit (80 MPa)
*1
Common rail pressure sensor problem Supply pump problem ECM, SCV, common rail pressure sensor connector connection problem
0090
SCV (suction control valve) drive system disconnection, +B short, or GND short
SCV or har- ・ Main relay power supply voltage is 18 V or higher. ness discon・ DTC: 1630 is not nection or detected. short ・ The SCV drive duty is in the range of 10% or more and 90% or less.
The SCV drive About 2 sec. milli-amp exceeds the 2400 mA or longer, or the SCV drive milli-amp below the 50 mA, or the difference between the target and the actual milli-amp exceeds the 1000 mA or longer.
Due to disconnection or short, stalling and revving are both possible, as well as black smoke and excess output Back-up: Injection quantity restriction 3 (multi-injection stop) Target common rail pressure upper limit (80 MPa)
*2
SCV problem Wiring problem (short, disconnection, high resistance) between ECM and SCV, ECM internal problem
0107
Atmospheric pressure sensor circuit abnormality (abnormally low voltage)
Sensor or har- ・ Key switch input voltage is 18 V or higher. ness disconnection, short, ・ DTC: 1630, 1632 are not detected. deterioration
Atmospheric pres- About 5 sec. For backup equivalent to sure sensor volt2000 m age is below 0.5 ・ Black smoke at high altiV. tude ・ Insufficient output at low altitude Back-up: Atmospheric pressure default value setting (80 kPa) EGR stop
*2
Wiring problem (disconnection, short, high resistance) between ECM and atmospheric pressure sensor Atmospheric pressure sensor problem ECM internal problem
89
SST-10-06-007EN 1
