Isuzu KB P190. Manual — part 327
6E-274 Engine Control System (4JH1)
Checks Action
Air Intake System Checks
Inspect the air intake system for the following conditions.
• Inspect the air cleaner and air intake ducts for a restriction, holes, or leaks.
• Inspect for a restriction or leak in the intercooler.
• Inspect for a restriction in the turbocharger inlet duct.
• Inspect for a restriction or leak in the intake manifold.
• Inspect for a restriction or damage at MAF sensor.
• Inspect for a worn or damaged turbocharger turbine wheel, shaft or compressor
wheel. Refer to turbocharger inspection in the Engine Mechanical section.
Engine Mechanical Checks
Inspect the engine mechanical for the following conditions. Refer to the Engine
Mechanical section.
• Inspect for poor cylinder compression. Proper compression is more than 2100 kPa
(309 psi).
• Inspect for incorrect basic engine parts such as camshaft, cylinder head, pistons,
etc.
• Improper mechanical timing
• Improper valve gap
• Broken or weak valve springs
• Worn camshaft lobes
• Inspect for any excessive fuel entering combustion chamber.
• Inspect for coolant entering the combustion chamber.
Electrical System Checks
Inspect the engine electrical for the following conditions. Refer to the Engine Electrical
section.
• Inspect the glow plug control (preheating) system operation.
Engine Control System (4JH1) 6E-275
Repair Instructions
Engine Control Module (ECM) Replacement
Engine Control Module (ECM) Replacement
Procedure
Important:
If the ECM is to be replaced the following programmed
contents MUST be reprogrammed into the new ECM.
• Vehicle identification number (VIN).
• Latest software/calibrations if released. Refer to
Service Programming System (SPS) Description
and Service Programming System (SPS) (Remote
Procedure) or Service Programming System (SPS)
(Pass-Thru Procedure) in this section
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the seat left-hand side.
3. Roll up the floor carpet.
4. Remove four bolts from the ECM cover.
5. Disconnect the two connectors from the ECM.
Installation Procedure
1. Connect the two connectors to the ECM.
2. Put on the ECM to the floor panel.
3. Tighten the ECM cover by four bolts with specified
tightening torque.
Tightening torque
• Bolts: 8.0 - 12.0 N.m (0.8 - 1.2 kgf.m)
4. Lay the floor carpet exactly.
5. Put on the seat to the floor panel and tighten with
specified tightening torque.
Tightening torque
• Bolts: 40.0 N.m (4.1 kgf.m)
6. Connect the negative battery cable.
Vehicle Identification Number (VIN) Programming
Procedure
Important:
If the ECM from another vehicle is installed, VIN is not
programmed by the scan tool. Use the SPS to change
the original VIN. Refer to Service Programming System
(SPS) Description and Service Programming System
(SPS) (Remote Procedure) or Service Programming
System (SPS) (Pass-Thru Procedure) in this section.
Important:
If an updated software/calibrations is released, DO NOT
program the VIN now. The VIN is programmed at SPS
procedure. Refer to Service Programming System
(SPS) Description and Service Programming System
(SPS) (Remote Procedure) or Service Programming
System (SPS) (Pass-Thru Procedure) in this section.
6E-276 Engine Control System (4JH1)
1. Connect the scan tool to the vehicle DLC, with the
engine and the scan tool OFF.
2. Turn ON the scan tool.
3.
Select Diagnostic > appropriate vehicle
identification > Powertrain > 4JH1-TC >
Programming > Program VIN.
4. Input correct VIN reading from stamped VIN or
affixed VIN plate on the vehicle.
Select Lock ECU and lock the programmed VIN.
Service Programming System (SPS)
Description
The service programming system (SPS) allows a
technician to program a control module through the data
link connector (DLC). The information transfer circuit that
is used at the DLC is the same serial data circuit used be
the scan tool for retrieving diagnostic trouble codes
(DTCs), displaying data, clearing DTCs etc. This
procedure offers the ability to install software/calibrations
matched to a particular vehicle.
Most control modules have two types of memory. The
software/calibrations reside in the flash memory. The two
types of memory are listed below:
• Electrically Erasable Programmable Read Only
Memory (EEPROM).
This type of memory allows selected portions of
memory to be programmed while other portions
remain unchanged.
Certain learned values reside in the EEPROM, such
as:
- The vehicle identification number (VIN)
- The software/calibrations identification numbers
- The control module security information
• Flash Read Only Memory-Flash Memory
Flash memory has increased memory storage
capacity. During programming, all information within
this type of memory is erased, and then replaced
with entirely new information.
Service Programming Methods
The two methods of programming an engine control
module (ECM) are listed below:
• Remote
Programming
• Pass Thru Programming
For information on programming an ECM using one of
the methods listed above, refer to Service Programming
System (SPS) (Remote Procedure) or Service
Programming System (SPS) (Pass-Thru Procedure).
Before Programming a Control Module
Important:
DO NOT program an existing ECM with the identical
software/calibration package. This procedure is not a
short cut to correct the driveability condition. This is an
ineffective repair. An ECM should only be programmed
when the following occurs:
• When a service procedure instructs you to replace
the ECM. When the ECM from another vehicle is
installed, VIN must be changed. And change
vehicle information as necessary such as type of
transmission.
• An updated software/calibrations is released.
Ensure that the following conditions are met before
programming an ECM:
• The scan tool PCMCIA card is programmed with
the latest software.
• The TIS 2000 is installed with the latest software.
• The hardware key is plugged into the computer
port.
• Vehicle system voltage:
- There are no charging system concerns. All
charging system concerns must be repaired
before programming the ECM.
- The battery voltage is greater than 12 volts but
less than 16 volts. The battery must be fully
charged before programming the ECM.
- A battery charger is NOT connected to the
vehicles battery. Incorrect system voltage or
voltage fluctuations from a battery charger may
cause programming failure or ECM damage.
- Turn OFF or disable any system that may put a
load on the vehicles battery. Turn OFF or
disable systems such as:
◊ Heating, ventilation, and air conditioning
(HVAC) systems
◊ Headlights
◊ Room
lights
◊ Accessory
equipment
• The ignition switch is in the proper position. The
scan tool prompts you to turn ON the ignition, with
the engine OFF. DO NOT change the position of
the ignition switch during the programming
procedure unless instructed to do so.
• All tool connections are secure:
- The RS-232 cable
- The connection at the DLC
- The voltage supply circuits
Engine Control System (4JH1) 6E-277
• DO NOT disturb the tool harnesses while
programming. If an interruption occurs during the
programming procedure, programming failure or
ECM damage may occur.
• If you are performing the Pass-Thru programming
procedure using a notebook computer without the
power cord, ensure that the internal battery is fully
charged.
Service Programming System (SPS)
(Remote Procedure)
The Remote Service Programming System (SPS)
method is a three-step process that involves the
following procedures:
1. Connecting the scan tool to the vehicle and
obtaining the information from the engine control
module (ECM).
2. Connecting the scan tool to the terminal and
downloading a new calibration file from the terminal
into the scan tool memory.
3. Reconnecting the scan tool to the vehicle and
uploading the new calibration file into the ECM.
Performing the Remote Procedure
1. Connect the scan tool to the vehicle and obtain the
ECM information using the following procedure:
Important:
Ensure the ECM is installed in the vehicle and the battery
is fully charged before programming.
a. Connect the scan tool to the vehicle data link
connector (DLC), with the engine and the scan
tool OFF.
b. Turn ON the scan tool.
c. Press Enter at the title screen.
d. Turn ON the ignition, with the engine OFF.
e. Select Service Programming System at the Main
Menu.
f. Select Request Info.
g. If there is already stored in the scan tool, the
existing data is displayed on the screen. The
scan tool asks user to keep existing data Keep
Data or Continue to request new vehicle
information from the ECM. If there is no data in
the scan tool, it will immediately start vehicle
identification.
h. Enter the vehicle description by following the on-
screen instructions based on stamped VIN or
affixed VIN plate on the vehicle.
i. During obtaining information, the scan tool is
receiving information from any modules at the
same time. But only ECM information is
displayed on the screen.
j. Turn OFF all accessories and select Continue.
k. Verify that the correct VIN is entered on the
scan tool. If the VIN is incorrect, write down the
correct VIN.
2. Turn OFF the scan tool.
3. Disconnect the scan tool from the vehicle.
4. Turn OFF the ignition.
5. Transfer the data from the terminal to the scan tool
using the following procedure:
Important:
The TIS supports service programming with the scan
tool scan tool only.
a. Connect the scan tool to the terminal.
b. Launch the TIS application at the terminal.
c. Select the Service Programming System at the
main screen.
d. Highlight the following information on the Select
Diagnostic Tool and Programming Process
screen:
• Select Diagnostic Tool-Select scan tool.
• Select Programming Process-Identify
whether an existing ECM is being
reprogrammed or an ECM is being
replaced with a new one.
• Select ECU Location-Select Vehicle.
e. Select Next.
f. Verify the connections on the Preparing for
Communication screen and select Next.
g. Verify the VIN on the Validate Vehicle
Identification Number (VIN) screen and select
Next.
Important:
If the ECM is replaced to new one, VIN does not
displayed. Input correct VIN reading from stamped VIN
or affixed VIN plate on the vehicle. If the ECM from
another vehicle is installed, input correct VIN by same
way.
h. Highlight Engine on the System Type screen
and select Next, if requested.
i. Complete the following information based on
the service ID plate on the Validate Vehicle
Data screen until Next is highlighted:
• Model
• Model
Year
• Engine
• Type of Transmission
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст