11A-46 IMMOBILIZER CONTROL SYSTEM (4JK1/4JJ1/HFV6)
The ICU is installed to the steering lock. The ICU
controls the immobilizer system by authentication of the
transponder key and the ECM. An antenna coil is a part
of the ICU and it is located around steering key lock
cylinder. An antenna coil is energized when the ICU is
performing an authentication of the transponder key.
Engine Control Module (ECM)
Legend 1. ECM (4JK1/ 4JJ1)
2. ECM (HFV6)
The ECM is located inside of engine compartment via
mounting bracket and is behind air cleaner case (4JK1/
4JJ1) or attached to the engine (HFV6). The ECM
mainly controls the engine control and also exchanges
a request signal and a response signal to an ICU. If
fault occurs on immobilizer system, the ECM sets
DTC(s) and illuminates the service vehicle soon (SVS)
lamp or the malfunction indicator lamp (MIL). Powertrain Interface Module (PIM)
The PIM is located behind the driver’s side lower hinge
pillar trim. The PIM acts as the communication gateway
between the CAN communication protocol and other
protocol. The PIM converts analog signals from some
switches into serial data. The PIM upon inputs received
from the ECM, TCM and ICU controls the operation of
instruments and indicator lamps. (HFV6)
Transponder Key
Legend 1. Transponder chip
The transponder key accommodates a transponder
chip in the grip portion. The transponder keys have no
conventional power supply. The transponder chip is
energized via a radio wave supplied from an antenna
coil fitted around the steering lock cylinder. Only
transponder key that is correctly programmed key is
possible to engine run. Maximum five transponder keys
can be provided by additional programming.
RTW7BASH000201
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ISUZU KB P190 2007
ANTITHEFT SYSTEM 11B-3
Function of a keyless entry system
W ith a keyless entry system the car can be locked or
unlocked from any position around the car up to a
specified distance, by using the potable radio remote
transmitter inside key (remote key).
Status LED
W hile the system is in delay the alarm system is active
and LED flashes at 0.5Hz with or without activated
interior protection.
Hazard relay
The hazard warning lights will be activated by an
external relay. The output is low active.
Switches
All switches to ground. This makes it possible for failure
analysis to detect a short circuit or a broken wire to
each switch. To use this feature it is necessary to place
a 1.8k Ω resistor in parallel to the required switch.
Receiver
The receiver is integrated into the control unit.
To lower the idle current the receiver is equipped with a
standby mode. The antenna is integrated on the printed
circuit board.
Depending on the mounting position of the control unit
the antenna can be connected externally.
Range of communication
The range of communication between remote key and
receiver is intended to be least 3 m from centre of the
car.
Diagnosis
For diagnostic purpose the communication with an
internal diagnostic device ( Tech-2 ) is possible.
901RW 176
Transmitter (into remote key)
• Electronics integrated in remote key container for
TFR/TFS.
• Antenna integrated in remote key container.
• Frequency band is 433.92 MHz.
• Two function buttons (Door lock/Door unlock)
• Two status LED for TF (Door lock/Door unlock)
OM
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ISUZU KB P190 2007
