Suzuki Grand Vitara JB419. Service manual — part 180
Immobilizer Control System: 10C-10
Troubleshooting
Step
Action
Yes
No
1
Diagnostic Trouble Code (DTC) Check
1) Check ECM for DTC referring to “DTC Check in Section
2) Check ABS control module or ESP
®
control module for
DTC. For vehicle equipped with ESP
®
system, refer to
“DTC Check in Section 4F”. For vehicle not equipped
with ESP
®
system, refer to “DTC Check in Section 4E”.
3) Check BCM for DTC referring to “DTC Check in Section
10B in related manual”.
Is any DTC(s) detected?
Go to applicable DTC
diag. flow.
Go to Step 2.
2
Fuse check
1) Check if any fuse is blown.
Is any fuse blown?
Replace blown fuse(s). Go to Step 3.
3
ICM connector check
1) With the ignition key at OFF position, disconnect ICM
connector.
2) Check for proper connection at terminals and wires of
connector. Refer to “Intermittent and Poor Connection
Inspection in Section 00 in related manual”.
Is each terminal and wire connection normal?
Go to Step 4.
Repair poor
connection(s).
4
ECM connector check
1) With the ignition key at OFF position, disconnect ECM
connectors.
2) Check for proper connection at terminals and wires of
ECM connectors. Refer to “Intermittent and Poor
Connection Inspection in Section 00 in related manual”.
Is each terminal and wire connection normal?
Go to Step 5.
Repair poor
connection(s).
5
CAN communication circuit check
1) Check CAN communication circuit between ICM and
ECM for open, short and high resistance. Refer to
“Electrical Circuit Inspection Procedure in Section 00 in
related manual”.
Is each CAN communication circuit in good condition?
Go to step 6.
Repair circuit.
6
ICM power and ground circuit check
1) Check power and ground circuit of ICM referring to
“Inspection of Immobilizer Control Module (ICM) and Its
Circuit”.
Is power and ground circuit of ICM normal?
Substitute a known-
good ICM and recheck.
If DTC B1702 is still
detected, substitute a
known-good ECM and
recheck.
Repair power and
ground circuit.
10C-11 Immobilizer Control System:
DTC B1703: Unregistered Transponder
S5JB0BA304020
Detecting Condition and Trouble Area
NOTE
Troubleshoot DTC B1703 first if both B1703 and B1712 are detected at the same time.
Troubleshooting
Perform “Registration of the Ignition Key” and recheck DTC.
DTC B1704: Transponder Code Error 2
S5JB0BA304021
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Detecting Condition and Trouble Area
NOTE
Troubleshoot DTC B1704 first if both B1704 and B1713 are detected at the same time.
Troubleshooting
Detecting Condition
Transponder code does not register in ICM
Detecting Condition
Trouble Area
Inconsistent transponder data from transponder
• Use of the unregistered ignition key
• Corruption of the transponder in the ignition key
• Transponder faulty
• ICM faulty
Step
Action
Yes
No
1
Registration of the ignition key in use with ICM
1) Register the ignition key in use with ICM referring to
“Registration of the Ignition Key”.
Is ignition key in use registered?
Check that engine can
be started and recheck
DTC.
Go to step 2.
2
Registration of the spare ignition key with ICM
1) Register the spare ignition key with ICM referring to
“Registration of the Ignition Key”.
Is spare ignition key registered?
Check that engine can
be started and replace
ignition key which
cannot be registered.
Go to step 3.
3
ICM connector check
1) With the ignition key at OFF position, disconnect ICM
connector.
2) Check for proper connection at terminals of ICM
connector. Refer to “Intermittent and Poor Connection
Inspection in Section 00 in related manual”.
Is each terminal and wire connection normal?
Go to Step 4.
Repair poor
connection(s).
4
ICM check
1) Check power and ground circuit of ICM referring to
“Inspection of Immobilizer Control Module (ICM) and Its
Circuit”.
Is power and ground circuit of ICM normal?
Substitute a known-
good ICM and recheck.
Repair power and
ground circuit.
Immobilizer Control System: 10C-12
DTC B1705: Transponder Response Error
S5JB0BA304022
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Detecting Condition and Trouble Area
Troubleshooting
DTC B1706: Immobilizer Antenna Error
S5JB0BA304023
Detecting Condition and Trouble Area
Troubleshooting
Detecting Condition
Trouble Area
Cannot receive transponder data from transponder
• Use of the ignition key without the transponder
• Use of the unregistered ignition key
• Corruption of the transponder in the ignition key
• ICM faulty
Step
Action
Yes
No
1
DTC check
Is DTC B1706 detected other than B1705?
Go to applicable DTC
diag. flow.
Go to Step 2.
2
Registration of the ignition key in use with ICM
1) Register ignition key in use with referring to “Registration
Is ignition key in use registered?
Check that engine can
be started and recheck
DTC.
Go to step 3.
3
Registration of the spare ignition key with ICM
1) Register spare ignition key with ICM referring to
“Registration of the Ignition Key”.
Is spare ignition key registered?
Check that engine can
be started and replace
ignition key which
cannot be registered.
Go to Step 4.
4
ICM connector check
1) With the ignition key at OFF position, disconnect ICM
connector.
2) Check for proper connection at all terminals and wires of
ICM connector. Refer to “Intermittent and Poor
Connection Inspection in Section 00 in related manual”.
Is each terminal and wire connection normal?
Go to Step 5.
Repair poor
connection(s).
5
ICM check
1) Check power and ground circuit of ICM referring to
“Inspection of Immobilizer Control Module (ICM) and Its
Circuit”.
Is power and ground circuit of ICM normal?
Substitute a known-
good ICM and recheck.
Repair power and
ground circuit.
Detecting Condition
Trouble Area
Immobilizer antenna faulty
ICM faulty
Step
Action
Yes
No
1
ICM check
1) Check power and ground circuit of ICM referring to
“Inspection of Immobilizer Control Module (ICM) and Its
Circuit”.
Is power and ground circuit of ICM normal?
Substitute a known-
good ICM and recheck.
Repair power and
ground circuit.
10C-13 Immobilizer Control System:
DTC B1707: IMM EEPROM Error
S5JB0BA304024
Detecting Condition and Trouble Area
Troubleshooting
1) Clear DTC(s) referring to “Diagnostic Trouble Code (DTC) Clearance”.
2) Turn the ignition switch to OFF position.
3) Check if DTC B1707 is still detected referring to “Diagnostic Trouble Code (DTC) Check”. If still detected, go to the
next step. If not, the troubleshooting is completed.
4) Substitute a known-good ICM and recheck.
DTC B1708: ECM Code Error
S5JB0BA304025
Wiring Diagram
Refer to “Immobilizer Control System Wiring Circuit Diagram”.
Detecting Condition and Trouble Area
Troubleshooting
Detecting Condition
Trouble Area
EEPROM in ICM faulty
Internal failure (EEPROM corruption) of ICM
Detecting Condition
Trouble Area
Verification error between ICM and ECM
• ECM does not registered with immobilizer control
system
• ICM faulty
• ECM faulty
Step
Action
Yes
No
1
ECM check
Was DTC B1708 detected immediately after replace of
ECM?
Go to Step 2.
Go to Step 3.
2
Register ECM
1) Register ECM referring to “Procedure after ECM
2) Recheck DTC.
Is DTC B1707 detected?
Go to Step 3.
Check that engine can
be started and recheck
DTC.
3
Diagnostic Trouble Code (DTC) check
1) Check ECM for DTC referring to “DTC Check in Section
1A”.
2) Check ABS control module or ESP
®
control module for
DTC. For vehicle equipped with ESP
®
system, refer to
“DTC Check in Section 4F”. For vehicle not equipped
with ESP
®
system, refer to “DTC Check in Section 4E”.
3) Check BCM for DTC referring to “DTC Check in Section
10B in related manual”.
Is any DTC(s) detected?
Go to applicable DTC
diag. flow.
Go to Step 4.
4
ICM connector check
1) With the ignition key at OFF position, disconnect ICM
connector.
2) Check for proper connection at terminals and wires of
ICM connector. Refer to “Intermittent and Poor
Connection Inspection in Section 00 in related manual”.
Is each terminal and wire connection normal?
Go to Step 5.
Repair poor
connection(s).
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