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BE–94
TROUBLE-SHOOTING
TROUBLE-SHOOTING HINTS
Before checking the immobilizer system, check the diagnosis code of the EFI system to determine whether
the malfunction is caused by the immobilizer system or by the EFI system.
CAUTION:
·
In the immobilizer system, the system is composed with the same rolling code shared in common
among the ignition key, immobilizer ECU and EFI ECU. Hence, if the immobilizer ECU and/or EFI
ECU are replaced with that of another vehicle during the checking of the immobilizer ECU or EFI sys-
tem, the immobilizer system will be regarded as malfunctioning. Therefore, do not replace the immo-
bilizer ECU and/or EFI ECU with that of another vehicle unnecessarily.
·
If you have to replace the immobilizer ECU and/or EFI ECU, erase the rolling codes memorized in
the immobilizer ECU and EFI ECU. Then, register the ID code of the ignition key to the immobilizer
ECU.
·
Refer to service manual, Ref. No.9031.
DESCRIPTION
A self-diagnosis system is built in the ECU. If any abnormality should occur in the immobilizer system, the
self- diagnosis system memorizes the malfunction phenomenon in the ECU in the form of malfunction code
number.
When the test terminal of the check connector is connected with the ground terminal, the malfunction code
number that has been memorized in the ECU will be indicated in a form of blinking of the check lamp in the
SST.
This memorized malfunction code number is erased when the battery ground cable is disconnected from
the negative (–) terminal of the battery or when the backup fuse in the relay block assembly is disconnect-
ed with the ignition key switch turned off.
READ OUT OF DIAGNOSIS CODE
1. Connect the test terminal of the check connector with the
ground terminal, using a jump wire.
2. Connect a check lamp between the terminals as illustra-
tion.
NOTE:
·
Prepare the following SST.
SST:
09991-87211-000
CAUTION:
·
As for the check lamp, make sure to use a LED (light
emitting diode) type. Bulb type check lamp is not suit-
able for this system.
3. Set the ignition switch to the ON position.
4. Read the diagnosis code by observing the number of
blinking of the indicator lamp.
Diagnosis connector
Test terminal
Earth
(ECU-T)
terminal (E)
Check lamp (LED)
ABS
ECU
IMB
IG
REV
T
T
W
ITC
E
SIO
T
Jump wire
Diagnosis connector
JBE00335-06009
JBE00336-06010
VF
JBE00337-06011
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