SECURITY LIGHT: 11, DTC: B10D9:87/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]SM2445833
SECURITY LIGHT: 11, DTC: B10D9:87/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5353000

DTC

Security light flashing pattern

11

No detected communication with the coil

M-MDS display

Instrument cluster

B10D9:87

PCM

P1260:00
DETECTION CONDITION
• No detected communication with the coil
POSSIBLE CAUSE
• Related wiring harnesses malfunction
• The coil antenna is pulled out
• Cockle antenna malfunction
• Instrument cluster malfunction


Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY COIL ANTENNA CORRECTLY INSTALLED
• Verify the installation condition of the coil antenna.
• Is the coil antenna correctly installed? (Is the connector pulled out?)
Yes
Go to the next step.
No
Install the coil antenna correctly, then go to the next step.
(See COIL ANTENNA REMOVAL/INSTALLATION.)
2
INSPECT COIL ANTENNA POWER SUPPLY
• Disconnect the coil antenna connector.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage at coil antenna connector terminal B.
― Is the voltage 8 V or more?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 8.
3
INSPECT WIRING HARNESS BETWEEN COIL ANTENNA AND GROUND
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Measure the continuity of the wiring harness between coil antenna connector terminal C and ground.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 8.
4
INSPECT COMMUNICATION CIRCUIT (INPUT) FOR CONTINUITY
• Disconnect the instrument cluster connector
• Measure the continuity of the wiring harness between coil antenna connector terminal B and Instrument cluster connector terminal 2S.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness between the coil antenna and the Instrument cluster, then go to Step 8.
5
INSPECT COMMUNICATION CIRCUIT (OUTPUT) FOR CONTINUITY
• Measure the continuity of the wiring harness between coil antenna connector terminal A and Instrument cluster connector terminal 2Q.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness between the coil antenna and the Instrument cluster, then go to Step 8.
6
INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT
• Connect the coil antenna connector.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage at coil antenna connector terminal B.
― Is the voltage 8 V or more?
Yes
Go to the next step.
No
Replacing the coil antenna.
(See COIL ANTENNA REMOVAL/INSTALLATION.)
Go to Step 8
7
INSPECT COMMUNICATION CIRCUIT (OUTPUT) FOR CONTINUITY
• Measure the continuity of the wiring harness between coil antenna connector terminal A and ground.
• Is there continuity?
Yes
Go to the next step.
No
• Replacing the coil antenna. (See COIL ANTENNA REMOVAL/INSTALLATION.)
• Go to the next step
8
VERIFY AFTER REPAIR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable.
• Reconnect the disconnected connectors.
• Connect the negative battery cable.
• Clear DTCs using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
• Verify DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
• Are DTCs output again?
― Instrument cluster: B10D9:87
― PCM: P1260:00
Yes
• Replace the Instrument cluster and program the immobilizer system-related parts. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM].)
• Go to the next step.
No
Go to the next step.
9
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.