Suzuki GRAND VITARA JB416, Service Manual

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Immobilizer Control System: 10C-5
DTC P1615: Steering Lock Unit Communication Error (for Vehicle with Keyless Start System)
S5JB0EA304009
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram: ”
Circuit Description
When the transponder code in the ignition key is registered in ECM, the remote controller ID code is registered in both
ECM and keyless start control module at the same time. This DTC is detected only in case that the remote controller
ID code cannot be registered in both ECM and keyless start control module when the transponder code in the ignition
key is registered in ECM.
NOTE
• Perform the troubleshooting for DTC P1618 first if both DTC P1615 and P1618 are detected at the
same time.
• After replacing ECM, be sure to register the transponder code in the ignition key with ECM referring
to “Registration of the Ignition Key: in related manual”. After replacing the keyless start control
module of the vehicle equipped with the keyless start system, be sure to perform “Registration of
the Ignition Key: in related manual”.
Detecting Condition and Trouble Area
5 Immobilizer control module (ICM) check
1) Check immobilizer control module (ICM) referring to
“Inspection of Immobilizer Control Module (ICM) and Its
Circuit: in related manual”.
Is immobilizer control module (ICM) normal?
Replace ECM with new
one referring to “Engine
Control Module (ECM)
Removal and
Installation: in Section
1C in related manual”,
and then perform
“Procedure after ECM
Replacement: in related
manual”. Replace immobilizer
control module (ICM)
with new one referring
to “Immobilizer Control
Module (ICM) Removal
and Installation: in
related manual”.
Step Action Yes No
Detecting Condition Trouble Area
• While registering the transponder code in ECM, the
keyless start control module sent a signal to ECM
indicating that the remote controller ID code could not
be registered.
• The remote controller ID code could not be registered in
the keyless start control module or ECM. And, the
registration of the transponder code in ECM was
terminated forcibly.
• Wire circuits between steering lock unit and keyless
start control unit open or shorted
• CAN communication wire circuits faulty
• Steering lock unit faulty
• Keyless start control module faulty
• ECM faulty