INITIALIZATION AND REGISTRATION
When replacing the ECM and/or any other components in the following chart, perform the corresponding utility items.
When the ECM and one or more other components are replaced at the same time, perform the following utility items by following the instructions shown on the GTS display, starting with the ECM.
|Replacement Part||Utility Item|
|Crankshaft position sensor plate||
Clear Crank Time Compensation Data
|Diesel throttle body assembly||
|Turbocharger sub-assembly or Turbocharger nozzle vane control actuator|
When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.
INJECTOR COMPENSATION CODE
Each injector assembly has different fuel injection characteristics. In order to optimize fuel injection performance, the ECM compensates for these differences by adjusting the fuel injection duration of each injector assembly according to its compensation code. Injector compensation codes are unique, 30-digit, alphanumeric values printed on the head portion of each injector assembly.
If an incorrect injector compensation code is input into the ECM, the engine may rattle or engine idling may become rough. In addition, engine failure may occur and the life of the engine may be shortened.
|*b||Injector Compensation Code|
When an injector assembly is replaced, the injector compensation code must be input into the ECM.
When the ECM is replaced, all of the existing injector compensation codes must be input into the new ECM.
PILOT QUANTITY LEARNING
By performing "Pilot Quantity Learning", the injection volume for each cylinder is precisely adjusted so that the engine runs smoothly. The "Pilot Quantity Learning" information is stored in the EEPROM of the ECM.
If an incorrect pilot quantity learning value is input into the ECM, the engine may rattle or engine idling may become rough.
When an injector assembly is replaced, the injector compensation code must be input to the ECM, and then pilot quantity learning must be performed.
When the ECM is replaced, all of the existing injector pilot quantity learning values must be input into the new ECM.
WHEN USING GTS
Observe the following items for safety reasons:
Before using the GTS, read the instruction manual.
Prevent the GTS cable from being caught on the pedals, shift lever or steering wheel when driving with the GTS connected to the vehicle.
When driving the vehicle for testing purposes using the GTS, 2 persons are required. One drives the vehicle, and the other operates the GTS.
IGNITION SWITCH EXPRESSIONS
The type of ignition switch used on this model differs depending on the specifications of the vehicle.
The expressions listed in the table below are used in this section.
|Expression||Ignition Switch (Position)||Engine Switch (Condition)|
|Ignition Switch off||LOCK||Off (Lock)|
|Ignition Switch ACC||ACC||On (ACC)|
|Ignition Switch ON||ON||On (IG)|
|Engine Start||START||On (Start)|