ECUHELP KTFLASH is confirmed to support read and write operations for the Nissan SH705507N Kline ECU (used in Patrol 4.8L TB48 models) in both Bench mode and OBD mode. The tool performs checksum correction, and supports DTC OFF and IMMO OFF functions effectively.

Step-by-Step Operation:
In the KTflash software, search “Nissan SH705507N Kline”, then follow the wiring diagram provided to connect the hardware.

Click “Identify” to detect the ECU chip.
Read and write EPROM file — the software will prompt where to save the file.
Proceed to read and write flash files.

DTC OFF:
Load your flash file first (do not select a faulty file).
Go to “Fault Code Management”.
Select the DTC codes you want to disable.
Click Save.

IMMO OFF:
After loading the correct file, click IMMO OFF to disable the immobilizer.

To Sum up:
With KTFLASH, working on Nissan Patrol 4.8L (TB48) SH705507N ECUs is efficient and straightforward, whether you’re doing diagnostics, tuning, or repair.