Permanent DTC (P-DTC) Information (ITB14-056)
Publication date: 2014-11-25Reference number: ITB14-056
PERMANENT DTC (P-DTC) INFORMATION
TECHNICAL SERVICE BULLETIN
Reference Number(s): ITB14-056, Date of Issue:
November 25, 2014
| INFINITI: | 2015 All Models; 2010 - 2014 G25, G37 G37 Coupe, G37 Convertible, G37 IPL Coupe, G37 IPL Convertible, Q50, Q50 Hybrid, Q60 Coupe, Q60 ILP Coupe, Q60 Convertible, Q60 IPL Convertible, EX35, EX37, QX50, M37/M37x, M56/M56x, M35h, Q70, Q70 Hybrid, JX35, QX60, QX60 Hybrid, FX35, FX50, FX37, QX70, QX56, QX80 |
| CLASSIFICATION: | EC14-012 |
APPLIED VEHICLES
2010 and newer - see Applied Vehicles chart on page 4.
SERVICE INFORMATION
Starting with 2010 Model Year, Infiniti vehicles have been gradually incorporating a new type of DTC known as "Permanent DTC or P-DTC". Please refer to the P-DTC Applied Vehicles list on page 4.
- If a vehicle is equipped with P-DTCs, all emission related DTCs will also set a P-DTC if the MIL is turned ON.
- A listing of which DTCs that will also set a P-DTC is found in the DTC Index in the EC-Engine Control section of the Electronic Service Manual (ESM).
If a DTC repair is performed and the DTC erased, a vehicle may fail an Emission Inspection and Maintenance test if the P-DTC is not also erased.
P-DTC's can be erased by following the correct driving pattern:
- Use CONSULT-III plus (C-III plus) to confirm a P-DTC and determine the correct driving pattern to erase it (see page 2).
- Refer to the ESM, section EC-Engine Control, for driving pattern information. Look under How to Erase a Permanent DTC and Diagnosis Description .
- Details for driving pattern B and D are included in this bulletin, starting on page 2.NOTE: In most cases, if repairs are complete, P-DTCs will erase with the customer driving their vehicle in their normal daily use.
Driving Patterns B and D for Erasing P-DTCs
NOTE:
- The DTC Index in the ESM, for vehicles equipped with P-DTCs, includes a Group classification of "A" or "B" for DTCs that also set P-DTCs. P-DTC with a Group classification of B requires completion of driving pattern B and D to erase the P-DTC. In most cases, completion of driving pattern B will also complete driving pattern D.
- With C-III plus, use PERMANENT DTC WORK SUPPORT while performing driving patterns.
- Make sure to obey all traffic laws and speed limits when performing driving patterns.
Driving Pattern B
Driving pattern B means a trip satisfying the following conditions:
- Engine speed reaches 400 rpm or more.
- Engine coolant temperature reaches 70°C (158°F) or more.
- Vehicle speed of 70 - 120 km/h (44 - 75 MPH) is maintained for 60 seconds or more.
- Vehicle speed of 30 - 60 km/h (19 - 37 MPH) is maintained for 10 seconds or more.
- Vehicle speed of 4 km/h (2 MPH) or less with idling for 12 seconds or more.
- Vehicle speed of 10 km/h (7 MPH) or more for 10 minutes or more in total.
- 22 minutes or more elapsed time after engine start.NOTE:
- Drive the vehicle at steady speeds when a "maintained" speed is required.
- When the same malfunction (DTC) is detected regardless of driving conditions, driving pattern B must be restarted.
Driving Pattern D
Driving pattern D means a trip satisfying the following conditions:
- Vehicle speed of 40 km/h (25 MPH) or more for 300 seconds or more.
- Maintain continuous idle speed for 30 seconds or more.
- 600 seconds or more elapsed time after engine start.NOTE: When the same malfunction (DTC) is detected regardless of driving conditions, driving pattern D must be restarted.
Applied Vehicles (vehicles that use P-DTCs)
- All 2015 models have P-DTCs.
- 2010 to 2014 as follows:
VEHICLE MODELS INFORMATION
| MODEL | ENGINE | 2010 | 2011 | 2012 | 2013 | 2014 |
|---|---|---|---|---|---|---|
| G25 | VQ25HR | N/A | Yes | Yes | N/A | N/A |
| G37 G37 Coupe G37 Convertible G37 IPL Coupe G37 IPL Convertible |
VQ37VHR | Yes | Yes | Yes | Yes | N/A |
| Q50 | N/A | N/A | N/A | N/A | Yes | |
| Q50 Hybrid | VQ35HR Hybrid | N/A | N/A | N/A | N/A | Yes |
| Q60 Coupe Q60 ILP Coupe Q60 Convertible Q60 IPL Convertible |
VQ37VHR | N/A | N/A | N/A | N/A | Yes |
| EX35 | VQ35HR | No | Yes | Yes | N/A | N/A |
| EX37 | VQ37VHR | N/A | N/A | N/A | Yes | N/A |
| QX50 | N/A | N/A | N/A | N/A | Yes | |
| M35/M45 | VQ35HR/VK45DE | No | N/A | N/A | N/A | N/A |
| M37/M37x | VQ37VHR | N/A | Yes | Yes | Yes | N/A |
| M56/M56x | VK56VD | N/A | No | No | No | N/A |
| M35h | VQ35HR Hybrid | N/A | N/A | Yes | Yes | N/A |
| Q70 | VQ37VHR/VK56VD | N/A | N/A | N/A | N/A | Yes |
| Q70 Hybrid | VQ35HR Hybrid | N/A | N/A | N/A | N/A | Yes |
| JX35 | VQ35DE | N/A | N/A | N/A | Yes | N/A |
| QX60 | VQ35DE | N/A | N/A | N/A | N/A | Yes |
| QX60 Hybrid | QR25DER Hybrid | N/A | N/A | N/A | N/A | Yes |
| FX35 | VQ35HR | No | Yes | Yes | N/A | N/A |
| FX50 | VK50VE | No | Yes | Yes | Yes | N/A |
| FX37 | VQ37VHR | N/A | N/A | N/A | Yes | N/A |
| QX70 | VQ37VHR/VK50VE | N/A | N/A | N/A | N/A | Yes |
| QX56 | VK56DE/VK56VD | No | No | Yes | Yes | N/A |
| QX80 | VK56VD | N/A | N/A | N/A | N/A | Yes |