Gershon
07-05-11, 11:29
The TD5 ecu has the READ SETTING and CLEAR SETTING to read and clear the setting.
The settings available on that ecu are the injectors codes and the accelerator type, 2or 3 track.
The injector codes are composed of 5 characters, 4 literal and 1 that can be numeric or literal. The first 4
characters are coupled two by two and the last one is single ,for example NN FG 5 .
The last character can be different because there are 3 types of injectors built from year 1999 up to now.
Type 1 Type2 Type3
C M 0
A E 1
B F 2
C G 3
* H 4
* J 5
* K 6
* L 7
* M 8
The TEST BOOK shows all the 3 possibilities for the last character, but when you modify the code you have to write the code as it is printed on the injector; the TEST BOOK will automatically check the 5° code.
The type of accelerator has to be set according to the pedal mounted on the car. To know if the accelerator is 2 or 3 trak, you have to read the inputs and check if the 3° track changes his value when you move the pedal. Normally the euro 2 cars have the 2 track pedal and the euro 3 ones have the 3 track pedal.
The other values read as MAP TUNE ID or ECU PART NUMBER etc. are read only
INPUTS FUNCTIONS
The TD5 ecu has the READ FUELLING and READ SWITCH functions to read dynamically the parameters.
The parameters can be analogue-numeric or digital-ON/OFF.
ENGINE SPEED rpm
ROAD SPEED Km/h
IDLE SPEED ERROR(rpm) – This is a calculated value that shows the difference between the idle speed and
the real drive demand
ACCEL. WAY 1(V) - about 0.3V with the pedal released, about 4.7V with pedal to the maximum position
ACCEL. WAY 2(V) - about 4.7V with the pedal released, about 0.3V with pedal to the maximum position
ACCEL. WAY 3(V) – this track must have values very near to the second track.
ACCEL. SUPPLY(V) – this value must stay between 4.9 a 5.1
BATTERY V
AIR FLOW(gr/hr) – from 50 to 60 at 750 rpm ,the value increases with the speed and the turbocharger
load
AMBIENT PRESSURE(Kpa) – This value must be 100Kpa at the sea level and decrease when the ground
height increases. A decreasing of that value related to the acceleration should indicate that the air beyond
the filter is less than required.
MANIFOLD TURBO PRESSURE(Kpa) – at idle speed must be equal to the ambient pressure 100Kpa and it
goes up to 210 (Defender) or 230 (Discovery) at engine maximum load
AIR INLET TEMP.(c°) – This value shows the air temperature beyond the intercooler, but it depends also on
the EGR modulator exhaust recirculation
COOLANT TEMP.(c°) –with ambient temperature up to 30° and engine at idle speed or with low load it
should stay between 86° and 88°
FUEL TEMP.(c°) – about 10° less than the coolant temperature
EGR INLET(%)
EGR MODULATOR(%)
WASTEGATE MODULATOR(%) – (discovery only)
CYLINDER 1 BALANCE – CYLINDER 2 BALANCE – CYLINDER 3 BALANCE – CYLINDER 4 BALANCE – CYLINDER 5
BALANCE – from -4 to +4 with constant rpm. Higher values means that the relative injector doesn’t work correctly
The settings available on that ecu are the injectors codes and the accelerator type, 2or 3 track.
The injector codes are composed of 5 characters, 4 literal and 1 that can be numeric or literal. The first 4
characters are coupled two by two and the last one is single ,for example NN FG 5 .
The last character can be different because there are 3 types of injectors built from year 1999 up to now.
Type 1 Type2 Type3
C M 0
A E 1
B F 2
C G 3
* H 4
* J 5
* K 6
* L 7
* M 8
The TEST BOOK shows all the 3 possibilities for the last character, but when you modify the code you have to write the code as it is printed on the injector; the TEST BOOK will automatically check the 5° code.
The type of accelerator has to be set according to the pedal mounted on the car. To know if the accelerator is 2 or 3 trak, you have to read the inputs and check if the 3° track changes his value when you move the pedal. Normally the euro 2 cars have the 2 track pedal and the euro 3 ones have the 3 track pedal.
The other values read as MAP TUNE ID or ECU PART NUMBER etc. are read only
INPUTS FUNCTIONS
The TD5 ecu has the READ FUELLING and READ SWITCH functions to read dynamically the parameters.
The parameters can be analogue-numeric or digital-ON/OFF.
ENGINE SPEED rpm
ROAD SPEED Km/h
IDLE SPEED ERROR(rpm) – This is a calculated value that shows the difference between the idle speed and
the real drive demand
ACCEL. WAY 1(V) - about 0.3V with the pedal released, about 4.7V with pedal to the maximum position
ACCEL. WAY 2(V) - about 4.7V with the pedal released, about 0.3V with pedal to the maximum position
ACCEL. WAY 3(V) – this track must have values very near to the second track.
ACCEL. SUPPLY(V) – this value must stay between 4.9 a 5.1
BATTERY V
AIR FLOW(gr/hr) – from 50 to 60 at 750 rpm ,the value increases with the speed and the turbocharger
load
AMBIENT PRESSURE(Kpa) – This value must be 100Kpa at the sea level and decrease when the ground
height increases. A decreasing of that value related to the acceleration should indicate that the air beyond
the filter is less than required.
MANIFOLD TURBO PRESSURE(Kpa) – at idle speed must be equal to the ambient pressure 100Kpa and it
goes up to 210 (Defender) or 230 (Discovery) at engine maximum load
AIR INLET TEMP.(c°) – This value shows the air temperature beyond the intercooler, but it depends also on
the EGR modulator exhaust recirculation
COOLANT TEMP.(c°) –with ambient temperature up to 30° and engine at idle speed or with low load it
should stay between 86° and 88°
FUEL TEMP.(c°) – about 10° less than the coolant temperature
EGR INLET(%)
EGR MODULATOR(%)
WASTEGATE MODULATOR(%) – (discovery only)
CYLINDER 1 BALANCE – CYLINDER 2 BALANCE – CYLINDER 3 BALANCE – CYLINDER 4 BALANCE – CYLINDER 5
BALANCE – from -4 to +4 with constant rpm. Higher values means that the relative injector doesn’t work correctly