Suzuki Grand Vitara JB416 / JB420. Manual — part 426
10E-9 Keyless Start System:
Diagnostic Information and Procedures
Self-Diagnosis Function
S5JB0AA504002
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
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To ensure that the trouble diagnosis is done accurately
and smoothly, observe “Precautions in Diagnosing
Troubles” and follow “Keyless Start System Check”.
Keyless Start System Check
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Step
Action
Yes
No
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?
Go to Step 2.
Go to Step 3.
2
1) Check and repair referring to applicable “DTC Table”.
Are check and repair complete?
Go to Step 5.
Check and repair
malfunction part(s), and
go to Step 5.
3
1) Inspect and repair basic parts referring to “Keyless Start
Is there faulty condition?
Repair or replace
malfunction part(s), and
go to Step 5.
Go to Step 4.
4
1) Check for intermittent problems referring to “Intermittent
and Poor Connection Inspection in Section 00”.
Is there any faulty condition?
Repair or replace
malfunction part(s), and
go to Step 5.
Go to Step 5.
5
1) Confirm if the problem is solved and the keyless start
system is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once
and then confirm that no DTC is indicated.
Is there any problem symptom, DTC or abnormal condition?
Go to 2) of Step 1 and
perform trouble
diagnosis again.
End.
Keyless Start System: 10E-10
Customer questionnaire (example)
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Key Indicator Lamp Check
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Push the ignition knob switch (2) of the steering lock unit (1) and check that the key indicator lamp (3) in the
combination meter lights up in red or blue. If it does not light, go to “Key Indicator Lamp Circuit Check (Key indicator
lamp doesn’t light when ignition knob switch is pushed.)”.
Customer s name:
Model:
VIN:
Date of issue:
Date Reg:
Date of problem:
Mileage:
Problem Symptoms
Engine can not be started by turning Ignition knob
switch
All doors can not be locked / unlocked by all of
request switches
Other
Frequency of Occurrence
Continuous / Intermittent ( times a day, a month)
/
Other
Environmental Condition
Weather:
Fine / Cloudy / Rain / Snow / Other
Temperature:
(
F )
Stopping near area where intense radio waves are
emitted such as TV station, radio station, etc.
Yes / No
Diagnostic Trouble Code
First check:
Normal code / malfunction code ( )
Second check:
Normal code / malfunction code ( )
I4RS0BA50007-03
3
1
2
I5JB0AA50006-01
10E-11 Keyless Start System:
DTC Check
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1) Check to make sure that all doors are closed.
2) Open driver side door window glass and door.
3) Check to make sure that ignition key is not inserted
in ignition key cylinder. If it is, remove it.
4) Perform “Key Indicator Lamp Check”.
5) Close driver side door and within 15 seconds after
that, perform Steps a) through e) described below.
a) Insert ignition key (1) in ignition key cylinder (2).
b) Remove ignition key from ignition key cylinder.
c) Repeat Steps a) and b) twice.
d) Insert ignition key in ignition key cylinder.
e) Push driver side door request switch (3) 4 times.
At the end of Step e), buzzer sounds twice to
inform that trouble diagnosis mode has started.
6) Read flashing pattern of key indicator lamp (1) which
represents DTC as shown in example below and
write it down. When more than 2 DTCs are stored in
memory, flashing for each DTC is repeated three
times starting with the smallest DTC number in
increasing order.
NOTE
Go to “No DTC Detection After Performing
DTC Check” in case that any DTC is detected
after performing the procedure mentioned
above.
7) After completing the check, remove ignition key from
ignition key cylinder.
2
3
1
I5JB0AA50007-01
[A]: DTC NO. 12 (Normal)
K: Key indicator lamp
[B]: DTC NO. 52
a: 0.3 seconds
H: Key indicator lamp turned ON
b: 1.0 second
L: Key indicator lamp turned OFF
c: 3.0 seconds
b
c
a
a
[A]
H
L
H
L
[B]
5
2
b
a
c
a
2
1
1
b
a
a
2
I5JB0AA50008-01
Keyless Start System: 10E-12
DTC Table
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DTC Clearance
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1) Perform Steps 1) through 5) of DTC check procedure and have DTC indicated.
2) Open driver side door.
3) Close driver side door and within 10 seconds after that, perform Steps a) to c) described below.
a) Push unlock side (3) of driver side manual door lock switch (1).
b) Push lock side (2) of driver side manual door lock switch.
c) Repeat Steps a) and b) 3 times.
At the end of Step c), DTCs are cleared and key indicator lamp indicates DTC No. 12 (Normal).
4) After completing DTC clearance, remove ignition key from ignition key cylinder.
DTC (Flashing pattern
of key indicator lamp)
Detected parts item
Detecting condition
11
Communication Error With Steering
Lock Unit
No communication is available between keyless
start control module and steering lock unit
12
—
Normal (No malfunction DTC is detected)
Release Signal Error from Steering
Lock Unit
Although lock release signal is output to steering
lock unit, it is not inputted from steering lock unit
Steering Lock Unit Malfunction
Steering lock unit cannot be unlocked due to its
temperature rise
Internal Error in Keyless Start Control
Module (EEPROM Reading Error)
Data cannot be read from memory in keyless start
control module
Internal Error in Keyless Start Control
Module (EEPROM Writing Error)
Data cannot be written into memory in keyless start
control module
Lost Communication With BCM
Keyless start control module cannot receive data
sent by CAN from BCM
Control Module Communication Bus
Off
No communication is available with all control
modules connected by CAN
Driver Side Door Request Switch
Malfunction
Input signal from driver side door request switch
remains ON, unchanged
Passenger Side Door Request Switch
Malfunction
Input signal from passenger side door request
switch remains ON, unchanged
Rear end Door Request Switch
Malfunction
Input signal from rear end door request switch
remains ON, unchanged
1
2
3
I5JB0AA50009-02
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