Exhaust Brake Option Programming

Exhaust Brake Option Programming

The Exhaust Brake Option Programming must be done when any of the following procedures are performed:
- When the ECM is replaced.
- When change of the exhaust brake assist in cruise control is needed.

It is set up during the cruise control so that the exhaust brake may be effective when the actual vehicle speed is higher than set speed. It can change by request of a user.
This exhaust brake assist in cruise control is enabled when the following conditions are met:
- Exhaust brake in cruise mode is programmed.
- Exhaust brake request switch is ON.
- In cruise control.
- Accelerator pedal is not pressed.
- Actual vehicle speed is higher than 4MPH (6.4km/ h) from set speed.
- Fuel injection quantity is 0mm3/stk.

This exhaust brake assist in cruise is disabled when the one of the following conditions is met.
- Exhaust brake in cruise mode is not programmed.
- Exhaust brake request switch is OFF.
- Not being the cruise control.
- Accelerator pedal is pressed.
- Actual vehicle speed is less than 1.5MPH (2.4km/ h) of set speed.
- Fuel injection quantity more than 1mm3/stk.

Exhaust Brake Option Programming Procedure
1. Connect the scan tool to the data link connector.
2. Connect the RS-232 to the scan tool and PC.
3. Start TIS 2000 and select the Service Programming System (SPS).
4. In the "Select Diagnostic Tool and Programming Process" screen, select the following menu.
- Diagnostic tool "Pass-Thru".
- Select Programming Process "Reprogram ECU".
- ECU Location on the "Vehicle". Then, follow the SPS screen instructions.

5. Ensure that ALL programming contents are entered correctly and were programmed successfully by turning OFF the ignition for 30 seconds.
6. Using the scan tool to check programmed exhaust brake option value following this navigation: Diagnostics > (5) 2005 > Isuzu > NPR/NQR/NRR > F0: Powertrain > (6) 5.2L L4 Diesel > Automatic or Manual > F2: Special Functions > F5: Option Programming > F3: Exhaust Brake Options.
7. Start the engine and let idle.
8. Inspect for a proper engine running condition and for no DTCs.
9. Perform test drive and verify the exhaust brake system.