Suzuki Grand Vitara JB416 / JB420 (ESP model). Manual — part 104
10C-1 Immobilizer Control System:
Control Systems
Immobilizer Control System
Precautions
Precautions in Diagnosing Troubles
S5JB0EA300001
• Before confirming the diagnostic trouble code (DTC), do not disconnect connector from ECM, battery cable from
battery, ground wire harness, or main fuse. Such disconnection will erase DTC stored in ECM.
• DTC stored in ECM memory can be checked as well as cleared by using SUZUKI scan tool. Before using SUZUKI
scan tool, read its operator’s manual carefully to know how to use it and what functions are available.
• Be sure to read “Precautions for Electrical Circuit Service in Section 00 in related manual” before inspection.
• Communication of ECM, BCM, combination meter, TCM, keyless start control module (if equipped), ABS/ESP
®
control module, 4WD control module (if equipped), Steering angle sensor (if equipped) and DLC is established by
CAN (Computer Area Network). (For more detail of CAN communication, refer to “CAN Communication System
Description in Section 1A”) Therefore, handle CAN communication lines with care referring to “Precaution for CAN
Communication System in Section 00 in related manual”.
Immobilizer Control System: 10C-2
Schematic and Routing Diagram
Immobilizer Control System Wiring Circuit Diagram
S5JB0EA302001
NOTE
For more details about power supply and ground wire circuits for ECM, BCM, ABS/ESP
® control
module, keyless start control module and combination meter, refer to “System Circuit Diagram in
Section 9A in related manual”.
BLK/WHT
BLK
WHT/BLU
WHT/RED
12V
G24-1
G24-2
12V
5V
12V
12V
PNK/BLU
GRY/BLU
G24-4
G24-3
E23-11
E23-19
BLK
BLK/YEL
12V
E23-29
WHT
PPL/WHT
E53-46 E53-42
E23-9 E23-17
WHT
RED
E53-13 E53-44
RED
WHT
RED
WHT
RED
WHT
G31-1
G31-3
G28-8
G28-10
G42-19
G42-18
G42-20 G42-29 G42-30
5V
ORN
BRN/YEL
BLK/YEL
G22-3 G22-7 G22-8
G28-13
PPL/RED
1
2
2
2
2
2
3
4
2
5
6
7
15
9
10
11
12
13
14
BLK
BLK/RED
G24-5
G24-6
14
E03-8
E03-10
E03-12 E03-6
8
19
1
2
3
4
G24
16
5
6
G31-2
G31-4
RED
WHT
WHT
RED
17
18
18
20
I5JB0DA30001-02
1. Battery
6. Data link connector (DLC)
11. Keyless start control module
16. Immobilizer control module (ICM) connector
(harness side view)
2. Fuse
7. ECM
12. Combination meter
17. To DLC
3. Ignition switch
8. ABS control module
13. From fuse
18. To BCM
4. Junction block assembly
9. Junction connector
14. BCM
19. To BCM and ABS/ESP
® control module
5. Immobilizer control
module (ICM)
10. Steering lock unit
15. ESP
® control module (Vehicle equipped
with ESP
® system)
20. To TCM, 4WD control module and steering
angle sensor (if equipped)
10C-3 Immobilizer Control System:
Diagnostic Information and Procedures
Diagnostic Trouble Code (DTC) Table
S5JB0EA304004
ECM
NOTE
ECM detects diagnostic trouble code (DTC). Immobilizer control module (ICM) does not.
NOTE
If any DTC other than the above DTCs is detected, refer to “DTC Table in Section 1A”.
DTC P1614: Transponder Response Error
S5JB0EA304008
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”
Detecting Condition and Trouble Area
DTC No.
Detecting Item
Detecting Condition
Immobilizer
Indicator
Lamp
P1614 Transponder response error
Transponder code in the transponder built in
the ignition key cannot be read through
immobilizer control module (ICM).
Flash
P1615
Steering lock unit communication error (for
vehicle with keyless start system)
• While registering the transponder code in
the transponder built in the ignition key in
ECM, the keyless start control module sent
a signal to ECM indicating that the ID code
could not be registered.
• The ID code could not be registered in the
keyless start control module or ECM.
Flash
P1616
Unregistered keyless start control module (for
vehicle with keyless start system)
ECM detects different ID codes registered in
ECM and keyless start system.
Flash
P1618
Keyless start control module CAN
communication error (for vehicle with keyless
start system)
Reception error of communication data for
keyless start control module is detected for
longer than specified time continuously.
Flash
P1621 Immobilizer communication line error
Communication error between immobilizer
control module (ICM) and ECM is detected by
ECM.
Flash
P1622 EEPROM read/write error
EEPROM in ECM is corrupted.
Flash
P1623 Unregistered transponder
Transponder code in the transponder built in
the ignition key is invalid.
Flash
P1625 Immobilizer antenna error
Immobilizer control module (ICM) is faulty.
Flash
P1636 Immobilizer information registration failure
Communication error between ECM and
BCM is detected by ECM.
No operation
P1638 Immobilizer information mismatched
• Communication error between ECM and
BCM is detected by ECM.
• Wrong ECM or BCM is used.
No operation
Detecting Condition
Trouble Area
Transponder code in the transponder built in the ignition
key cannot be read through immobilizer control module
(ICM).
• Use of the ignition key without the transponder
• Use of the unregistered ignition key
• Corruption of the transponder in the ignition key
• Immobilizer control module (ICM) faulty
• ECM faulty
Immobilizer Control System: 10C-4
Troubleshooting
Step
Action
Yes
No
1
Diagnostic Trouble Code (DTC) confirmation
1) Clear DTC(s) referring to “Diagnostic Trouble Code
(DTC) Clearance in related manual”.
2) Turn the ignition switch to OFF position.
3) Check if any DTC is detected referring to “Diagnostic
Trouble Code (DTC) Check in related manual”.
Is DTC P1614 still detected?
Go to Step 2.
The troubleshooting is
completed.
2
Diagnostic Trouble Code (DTC) check
1) Check if any DTC other than P1614 is detected referring
to “Diagnostic Trouble Code (DTC) Check in related
manual”.
Is any DTC other than P1614 is detected?
Perform troubleshooting
referring to the
corresponding flowchart
in this section, and then
go to Step 3.
Go to Step 3.
3
Registration of the ignition key in use with ECM and
Diagnostic Trouble Code (DTC) Check
1) There is a possibility that the unregistered ignition key is
used. Therefore, register the transponder code in the
transponder in the ignition key with ECM referring to
“Registration of the Ignition Key in related manual”.
2) Check if DTC P1614 is detected referring to “Diagnostic
Trouble Code (DTC) Check in related manual”.
Is DTC P1614 detected?
Go to Step 4.
The troubleshooting is
completed.
4
Registration of the new ignition key with ECM and
Diagnostic Trouble Code (DTC) check
1) The transponder in the ignition key is corrupted or the
ignition key without the transponder is used. Therefore,
prepare the new ignition key.
2) Register the transponder code in the transponder in the
new ignition key with ECM referring to “Registration of
the Ignition Key in related manual”.
3) Check if that DTC P1614 is detected referring to
“Diagnostic Trouble Code (DTC) Check in related
manual”.
Is DTC P1614 detected?
Go to Step 5.
The troubleshooting is
completed.
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”.
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