Suzuki Grand Vitara JB419. 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

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 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

of the Ignition Key”.

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

Replacement”.

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).