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SECURITY LIGHT: DTC 11 (WDS OR EQUIVALENT: DTC B1681/B1681)

id0902i8914500

DTC 11 (B1681/B1681) | Communication error between the keyless control module and the coil antenna.
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POSSIBLE CAUSE | • Defective coil antenna • Defective keyless control module • Defective wiring harness

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT POWER SUPPLY CIRCUIT OF COIL ANTENNA • Disconnect coil antenna connector. • Turn ignition switch to ON position. • Measure voltage at terminal D of coil antenna connector. • Is voltage more than 8 V? | Yes | Go to next step.
No | Repair wiring harness.
2 | INSPECT WIRING HARNESS BETWEEN COIL ANTENNA AND GROUND • Turn ignition switch to LOCK position. • Inspect wiring harness between coil antenna terminal C and ground for following. - Short to power supply - Open circuit • Is wiring harness okay? | Yes | Go to next step.
No | Repair wiring harness.
3 | INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT • Connect coil antenna connector. • Turn ignition switch to ON position. • Is there continuity between the following terminals? - 2Y-B - 2AA-A | Yes | Replace coil antenna, then go to the next step. (See COIL ANTENNA REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS SYSTEM])
No | Repair wiring harness.
4 | INSPECT KEYLESS CONTROL MODULE • Turn the ignition switch to the ON position. • Is the DTC displayed? - Security light: 11 - WDS or equivalent: B1681/B1681 | Yes | Replace keyless control module, then go to the next step. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS SYSTEM])
No | DTC troubleshooting completed.