SECURITY LIGHT 11, DTC B1681/B1681/P1260

id0902e3828900

DTC 11

Communication error between the keyless control module and the coil antenna.

POSSIBLE CAUSE

• Defective coil antenna
• Defective keyless control module
• Defective wiring harness

Diagnostic procedure

STEP

INSPECTION

ACTION

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.
No
Repair wiring harness.
4
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
- Security light: 11
- M-MDS: B1681/B1681/P1260
Yes
Replace keyless control module, then go to the next step.
No
DTC troubleshooting completed.