Trubleshoot 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 16 V or higher. sure exceeds 150 ・ 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
・ Battery voltage is normal. ・ 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 155 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 16 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 PCV (pressure control valve) is 40 % or less, or the PCV target pressure send quantity is 90 mm3/ sec. or less.
The actual com- About 8 sec. mon rail pressure is at least 10 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, PCV, common rail pressure sensor connector connection problem
0090
PCV1 (pressure control valve) drive system disconnection, or GND short
PCV or har- ・ Main relay power supply PCV1 monitor sig- About 1 sec. voltage is 16 V or higher. nal is fixed to Lowness discon・ DTC: 0092 is not side. nection or detected. short ・ Engine speed is at least 300 min-1 or actual common rail pressure is at or above 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)
*2
PCV problem Wiring problem (short, disconnection, high resistance) between ECM and PCV, ECM internal problem
0092
PCV1+B short
PCV1 electri- ・ Key switch input voltage PCV1 monitor sig- About 1 sec. High engine vibration, output nal is fixed to reduction, black smoke is 16 V or higher. cal wiring +B ・ DTC: 0090, and 0092 are High-side. Back-up: PCV1 stop. short not detected.
*1
Wiring problem between ECM and PCV
88
WST-10-06-003EN 1
