Dtc B1703: Unregistered Transponder - Suzuki GRAND VITARA 2005 Service Manual

10C-11 Immobilizer Control System:

DTC B1703: Unregistered Transponder

Detecting Condition and Trouble Area
Detecting Condition
Transponder code does not register in ICM
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
Wiring Diagram
Refer to "Immobilizer Control System Wiring Circuit Diagram: ".
Detecting Condition and Trouble Area
Detecting Condition
Inconsistent transponder data from transponder
NOTE
Troubleshoot DTC B1704 first if both B1704 and B1713 are detected at the same time.
Troubleshooting
Step
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?
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?
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?
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?
Action
Trouble Area
• Use of the unregistered ignition key
• Corruption of the transponder in the ignition key
• Transponder faulty
• ICM faulty
Yes
Check that engine can
be started and recheck
DTC.
Check that engine can
be started and replace
ignition key which
cannot be registered.
Go to Step 4.
Substitute a known-
good ICM and recheck.
S5JB0BA304020
S5JB0BA304021
No
Go to step 2.
Go to step 3.
Repair poor
connection(s).
Repair power and
ground circuit.