Diagnostic Information And Procedures; Self-Diagnosis Function; Keyless Start System Diagnosis Introduction; Keyless Start System Check - Suzuki Swift Sport 2004 Service & Repair Manual

10E-8 Keyless Start System:
Precautions in Diagnosing Troubles
• The keyless start system executes data transmission/
reception by means of the radio wave. Therefore,
proper operation may not be obtained if use of the
door lock function and engine start function of the
keyless start system is attempted near the place
where strong radio wave is emitted (TV and radio
broadcasting stations, etc.).
• Diagnostic information stored in keyless start control
module memory can be checked only by key indicator
lamp.
• Be sure to use the trouble diagnosis procedure as
described in "Keyless Start System Check". Failure to
follow it may result in incorrect diagnosis. (Some other
DTC may be stored by mistake in the memory of
keyless start control module during inspection.)
• Be sure to read "Precautions for Electrical Circuit
Service in Section 00" before inspection and observe
what is written there.
• Communication of ECM, BCM, TCM (A/T model),
ABS control module, keyless start control module and
combination meter is established by CAN (Controller
Area Network). (For detail of CAN communication for
keyless start control module, refer to "CAN
Communication System Description"). Therefore,
handle CAN communication line with care referring to
"Precaution for CAN Communication System in
Section 00".

Keyless Start System Check

Step
1 1) Record details of the problem. For your record, use of a
questionnaire form will facilitate collecting information for
proper analysis and diagnosis.
2) Check if the problem described in "Customer
Questionnaire (Example)" actually occurs in the vehicle.
(This step should be performed with the customer if
possible.)
Perform "Keyless Start System Operation Inspection"
procedure to check if the symptom which has occurred is
abnormal or not.
3) Check for DTC referring to "DTC Check", and then
record DTC(s).
4) Clear DTC referring to "DTC Clearance" if any DTC
exists, and then recheck for DTC.
Is any DTC still detected?
2 1) Check and repair referring to applicable "DTC Table".
Are check and repair complete?

Diagnostic Information and Procedures

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Action
• Replacement of the keyless start control module
When keyless start control module is replaced with
new one, make sure that register remote controller ID
code to keyless start control module correctly
according to "Registration Procedure for Remote
Controller ID Code".
• Keyless start control module substitution
When the keyless start control module used in
another vehicle was installed in the vehicle, register
the ID code of the remote controller in the keyless
start control module as well as the ignition key
transponder code for the immobilizer control system in
ECM. For the registration procedure of the ignition key
transponder code, refer to "Registration of the Ignition
Key in Section 10C".

Self-Diagnosis Function

The keyless start control module has self-diagnosis
function to monitor the system components and circuits
while the keyless start system is at work. When the
keyless start control module detects an abnormality in
the system, it saves the area where such abnormality
has occurred as a DTC in its memory. The DTC stored in
memory of the keyless start control module is indicated
by the key indicator lamp in the combination meter
flashing in a specific pattern. For DTC indication, refer to
"DTC Check" and for the clearing procedure, to "DTC
Clearance".

Keyless Start System Diagnosis Introduction

To ensure that the trouble diagnosis is done accurately
and smoothly, observe "Precautions in Diagnosing
Troubles" and follow "Keyless Start System Check".
Yes
Go to Step 2.
Go to Step 5.
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S7RS0BA504004
No
Go to Step 3.
Check and repair
malfunction part(s), and
go to Step 5.