SECURITY LIGHT: 11, DTC: B10D9:87/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)]


id09021d353000

DTC

Security light flashing pattern

11

No detected communication with coil antenna

M-MDS display

Keyless control module

B10D9:87

PCM

P1260:00

POSSIBLE CAUSE
•  The coil antenna connector is pulled out
•  Coil antenna malfunction
•  Keyless control module malfunction
•  Related wiring harnesses malfunction


System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1
VERIFY DTCs
•  Is the DTC displayed again?
―  Keyless control module: B10E6:11
Yes
Inspect B10E6:11.
No
Go to the next step.
2
VERIFY COIL ANTENNA CORRECTLY INSTALLED
•  Verify the installation condition of the coil antenna.
•   Is the coil antenna correctly installed?
Yes
Go to the next step.
No
Install the coil antenna correctly, then go to Step 10.
3
INSPECT COIL ANTENNA POWER SUPPLY
•  Switch the ignition to off.
•  Disconnect the coil antenna connector.
•  Connect the negative battery cable.
•  Switch the ignition to ON.
•  Measure the voltage at coil antenna connector terminal B.
―  Is the voltage 8 V or more?
Yes
Go to step 5.
No
Go to the next step.
4
INSPECTION KEYLESS CONTROL MODULE
•  Measure the voltage at keyless control module connector terminal 4Q.
―  Is the voltage 8 V or more?
Yes
Repair or replace the wiring harness, then go to Step 10.
No
Replace the keyless control module.
Go to Step 10.
5
INSPECT WIRING HARNESS BETWEEN COIL ANTENNA AND GROUND
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Measure the continuity of the wiring harness between coil antenna connector terminal F and ground.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 10.
6
INSPECT COMMUNICATION CIRCUIT (INPUT) FOR CONTINUITY
•  Disconnect the keyless control module connector.
•  Measure the continuity of the wiring harness between coil antenna connector terminal C and keyless control module connector terminal 2D.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness between the coil antenna and the keyless control module, then go to Step 10.
7
INSPECT COMMUNICATION CIRCUIT (OUTPUT) FOR CONTINUITY
•  Measure the continuity of the wiring harness between coil antenna connector terminal D and keyless control module connector terminal 2B.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness between the coil antenna and the keyless control module, then go to Step 10.
8
INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT
•  Connect the coil antenna connector.
•  Connect the negative battery cable.
•  Switch the ignition to ON.
•  Measure the voltage at coil antenna connector terminal C.
―  Is the voltage 8 V or more?
Yes
Go to the next step.
No
Replace the coil antenna.
Go to Step 10.
9
INSPECT COMMUNICATION CIRCUIT (OUTPUT) FOR CONTINUITY
•  Measure the continuity of the wiring harness between coil antenna connector terminal D and ground.
•  Is there continuity?
Yes
Go to the next step.
No
Replace the coil antenna.
Go to the next step.
10
VERIFY AFTER REPAIR
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Reconnect the disconnected connectors.
•  Connect the negative battery cable.
•  Are DTCs output again?
―  Keyless control module: B10D9:87
―  PCM:P1260:00
Yes
Replace the keyless control module and program the immobilizer system-related parts.
Go to the next step.
No
Go to the next step.
11
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify if other DTCs are displayed.
•  Are any other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.