|
Q.
Is any other diagnosis code than P0088 output?
|
|
Inspection chart for diagnosis codes (Refer to ).
|
|
|
|
- Check suction control valve itself (Refer to ).
|
|
Q.
Is the check result normal?
|
|
Replace the supply pump assembly. After replacing the supply pump, learn the supply
pump (Refer to GROUP 00 - Precautions Before Service - What The Common Rail
Engine Learns ).
|
|
|
|
Q.
Are the check results normal?
Go to Step 4 .
Repair or replace the connector then replace the common rail assembly and fuel
injection tubes.
|
|
- Check output line for open/short circuit and damage.
Q.
Is the check result normal?
Go to Step 5 .
Repair the damaged harness wire then replace the common rail assembly and fuel
injection tubes.
|
|
- Check output line for open/short circuit and damage.
Q.
Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire then replace the common rail assembly and fuel
injection tubes.
|
|
- Engine: Idling
- Connect the oscilloscope special patterns pickup to engine-ECU terminal No. 37 and
earth.
OK: Output waveform timings of both sensors are the same as the check procedure
(Refer to ) using an oscilloscope.
Q.
Is the check result normal?
Go to Step 7 .
Replace the engine-ECU then replace the common rail assembly and fuel injection
tubes. When the engine-ECU is replaced, write the chassis number (Refer to GROUP 00 - How
to Perform Chassis Number Writing ). After replacing the engine-ECU,
register the injector identification code and learn fuel injection (Refer to GROUP 00 - Precautions
Before Service - What The Common Rail Engine Learns ).
|
|
- After replacing the common rail assembly and fuel injection tubes,
re-check the trouble symptoms
|
|
Q.
Does trouble symptom persist?
|
|
Replace the supply pump assembly. After replacing the supply pump, learn the supply
pump (Refer to GROUP 00 - Precautions Before Service - What The Common Rail
Engine Learns ).
|
|
|