DTC P0641 / P0651 / P0697
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
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P0641: Sensor Reference Voltage “A” Circuit / Open Sensor power supply voltage “A” is out of specified range. (1 D/C detection logic) |
•Fuel pressure sensor and/or its circuit
•EGR-1 valve position sensor and/or its circuit •EGR-2 valve position sensor and/or its circuit •Boost pressure sensor and/or its circuit •APP sensor and/or its circuit •Inlet throttle valve position sensor and/or its circuit •CMP sensor and/or its circuit •A/C refrigerant pressure sensor and/or its circuit •DPF® differential pressure sensor and/or its circuit •Turbocharger actuator position sensor and/or its circuit •ECM |
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P0651: Sensor Reference Voltage “B” Circuit / Open Sensor power supply voltage “B” is out of specified range. (1 D/C detection logic) |
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P0697: Sensor Reference Voltage “C” Circuit / Open Sensor power supply voltage “C” is out of specified range. (1 D/C detection logic) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | 5. | DPF® differential pressure sensor | 10. | EGR-2 valve position sensor |
| 1. | ECM | 6. | Inlet throttle valve position sensor | 11. | CMP sensor |
| 2. | A/C refrigerant pressure sensor | 7. | Fuel pressure sensor | 12. | Turbocharger actuator position sensor |
| 3. | APP sensor (main) | 8. | EGR-1 valve position sensor | ||
| 4. | APP sensor (sub) | 9. | Boost pressure sensor |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
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Go to Step 2.
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| 2 |
Sensor power supply circuit, signal circuit and ground circuit check
1)Check power supply circuit, signal circuit and ground circuit of the following sensors.
•A/C refrigerant pressure sensor according to Step 2 – 5 of DTC P0530:D16AA.
•APP sensor (main) according to Step 3 – 6 of Accelerator Pedal Check:D16AA. •APP sensor (sub) according to Step 3 – 6 of Accelerator Pedal Check:D16AA. •DPF® differential pressure sensor according to Step 2 – 5 of DPF® Differential Pressure Sensor Check:D16AA. •Inlet throttle valve position according to Step 4 – 7 of Inlet Throttle Valve Position Sensor Check:D16AA. •Fuel pressure sensor according to Step 3 – 6 of Fuel Pressure Sensor Circuit Check:D16AA. •EGR-1 valve position sensor according to Step 4 – 7 of EGR-1 Valve Position Sensor Check:D16AA. •Boost pressure sensor according to Step 5 – 8 of Boost Pressure Sensor Check:D16AA. •EGR-2 valve position sensor according to Step 4 – 7 of EGR-2 Valve Position Sensor Check:D16AA. •CMP sensor according to Step 2 – 5 of DTC P0340:D16AA. •Turbocharger actuator position sensor according to Step 3 – 6 of Turbocharger Actuator Position Sensor Check:D16AA. Is check result OK?
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Go to Step 3.
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Repair or replace defective wire harness.
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| 3 |
DTC check
1)When ignition is “OFF”, disconnect connector from A/C refrigerant pressure sensor.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 4.
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Replace A/C refrigerant pressure sensor.
•Manual A/C model:
•Automatic A/C model: |
| 4 |
DTC check
1)When ignition is “OFF”, disconnect connector from APP sensor.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 5.
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Replace accelerator pedal assembly (incorporating APP sensor).
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| 5 |
DTC check
1)When ignition is “OFF”, disconnect connector from DPF® differential pressure sensor.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 6.
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Replace DPF® differential pressure sensor.
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| 6 |
DTC check
1)When ignition is “OFF”, disconnect connector from inlet throttle valve.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 7.
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Replace inlet throttle valve.
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| 7 |
DTC check
1)When ignition is “OFF”, disconnect connector from fuel pressure sensor.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 8.
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Replace fuel pressure sensor.
|
| 8 |
DTC check
1)When ignition is “OFF”, disconnect connector from EGR-1 valve.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 9.
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Replace EGR-1 valve.
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| 9 |
DTC check
1)When ignition is “OFF”, disconnect connector from boost pressure sensor with IAT sensor-2.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
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Go to Step 10.
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Replace boost pressure sensor with IAT sensor-2.
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| 10 |
DTC check
1)When ignition is “OFF”, disconnect connector from EGR-2 valve.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
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Go to Step 11.
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Replace EGR-2 valve.
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| 11 |
DTC check
1)When ignition is “OFF”, disconnect connector from CMP sensor.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Go to Step 12.
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Replace CMP sensor.
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| 12 |
DTC check
1)When ignition is “OFF”, disconnect connector from turbocharger actuator.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTC.
Is DTC P0641, P0651 or P0697 still detected?
|
Replace ECM and recheck DTC.
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Replace turbocharger with exhaust manifold.
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