DTC P1206 / P2002 / P24A4
Precautions: General safety (00)
NOTE:
•When DTC P2002 is detected, ECM will not allow performing after-sales regeneration to prevent risk of a thermal incident due to high flow resistance of DPF®.
•Although after-sales regeneration will be possible after clearance of DTC P2002 by scan tool, do not perform after-sales regeneration.
•Although after-sales regeneration will be possible after clearance of DTC P2002 by scan tool, do not perform after-sales regeneration.
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P1206: Diesel Particulate Filter Restriction-Ash Accumulation Slightly DPF® flow resistance is higher than 0.065 kPa/m3/h (0.00066 kgf/cm2/m3/h, 0.0094 psi/m3/h, 0.65 mbar/m3/h). (1 D/C detection logic) |
•Clogging DPF®
•DPF® differential pressure sensor and/or its circuit •Fuel injector and/or its circuit •DPF® differential pressure sensor pipe and/or hose •Intake air system (abnormal air inhaled) •Exhaust system •DPF® •ECM |
|
P2002: Diesel Particulate Filter Efficiency Below Threshold DPF® flow resistance is higher than 0.12 kPa/m3/h (0.00122 kgf/cm2/m3/h, 0.0174 psi/m3/h, 1.2 mbar/m3/h). (1 D/C detection logic) |
|
|
P24A4: Diesel Particulate Filter Almost Full Any of the following conditions is met.
•Soot quantity is higher than specified value. (1 D/C detection logic)•Mileage from DPF® warning light ON exceeded specified distance. |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | 3. | Fuel injector No.2 | 6. | DPF® differential pressure sensor |
| 1. | ECM | 4. | Fuel injector No.3 | ||
| 2. | Fuel injector No.1 | 5. | Fuel injector No.4 |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
DTC check
1)Check DTC.
Is there any DTC(s) other than P1206, P2002 and P24A4?
|
Go to troubleshooting for applicable DTC(s) and go to Step 3.
|
Go to Step 3.
|
| 3 |
Is DTC P2002 detected in Step 2?
|
Go to Step 7.
|
Go to Step 4.
|
| 4 |
After-sales regeneration
1)Perform after-sales regeneration.
Is “Regeneration is completed successfully” displayed on SUZUKI scan tool?
|
End.
|
Go to Step 5.
|
| 5 |
Error indication check
1)Check for error message indication displayed on SUZUKI scan tool.
Is “Lost communications with the vehicle.” displayed on SUZUKI scan tool?
|
Go to Troubleshooting for Communication Bus Off:D16AA Model and go to Step 2.
|
Go to Step 6.
|
| 6 |
DTC check
1)Check DTC.
Is there any DTC(s) other than P1206, P2002 and P24A4?
|
Go to troubleshooting for applicable DTC(s) and go to Step 7.
|
Go to Step 7.
|
| 7 |
DPF® differential pressure sensor circuit and fuel injector circuit check
1)Check DPF® differential pressure sensor power supply circuit, signal circuit and ground circuits according to Step 2 – 5 of DPF® Differential Pressure Sensor Check:D16AA.
2)Check all fuel injector drive circuits (high side) and (low side) according to Step 1 of Fuel Injector Circuit Check:D16AA.
Is check result OK?
|
Go to Step 8.
|
Repair or replace defective wire harness and go to Step 8.
|
| 8 |
DPF® differential pressure sensor and fuel injector check
1)Check DPF® differential pressure sensor.
2)Check DPF® differential pressure sensor hose and pipe for obstructions, damage, leakage, and breaks.
3)Check fuel injector.
Is check result OK?
|
Go to Step 9.
|
Repair or replace defective part(s) and go to Step 9.
|
| 9 |
Air intake / turbocharger circuit and exhaust system check
1)Check that air intake / turbocharger circuit is working properly.
2)Check exhaust system for obstructions, damage, leakage and breaks.
Is check result OK?
|
Go to Step 10.
|
Repair or replace defective part(s) and go to Step 10.
|
| 10 |
DTC check
1)Clear DTC.
2)Set ignition “OFF”.
3)Check DTC.
Is DTC P2002 still detected?
|
Replace DPF®.
|
End.
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