Eeprom; Engine Coolant Temperature (Ect) Sensor - Isuzu 1999 RODEO Workshop Manual

6E1–384 RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

EEPROM

EEPROM
The Electronically Erasable Programmable Read Only
Memory (EEPROM) is a permanent memory that is
physically soldered within the PCM.
contains program and calibration information that the
PCM needs to control Powertrain operation.
EEPROM Programming
1. Connect Tech 2 to the vehicle DLC and retrieve
information from the PCM. Ensure that the following
condition have been met:
f Battery is fully charged.
f The Ignition is in ON position.
f Tech 2 cable is securely connected to DLC.
2. Download latest program and calibration from ITCS.
Always use latest ITCS software to program PCM.
Refer to Up–to–date ITCS user's guide.
3. Reconnect Tech 2 to the DLC and program PCM.
f Make sure the ignition is recycled after information
is retrieved.
f Ensure the ignition is stay in ON position after
The EEPROM
Functional Check
1. Perform the On–Board Diagnostic System Check.
2. Start the engine and run for least one minute.
3. Check for DTCs using Tech 2.
4. If the PCM fails to program, proceed as follow:
014RX002
f Ensure that all PCM connections are OK.
f Check the ITCS for latest version software.
f Attempt to program PCM again. If PCM still cannot
Engine Coolant Temperature
Removal Procedure
1. Disconnect the negative battery cable.
2. Drain enough engine coolant so that the coolant level
will be below the ECT sensor.
3. Remove electrical connector from the sensor located
on the intake manifold above the ignition coil.
programming is started.
be programmed properly, replace PCM. The
replacement PCM must be programmed.
(ECT) Sensor
901RX031