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

id0902e3353000

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

•  Coil antenna connector or terminals malfunction

•  Open circuit in wiring harness between coil antenna terminal F and body ground

•  Open circuit or short to ground in coil antenna power supply circuit

―  Short to ground in wiring harness between ENG 10 A fuse and coil antenna terminal B

―  ENG 10 A fuse malfunction

―  Open circuit in wiring harness between ignition switch (IG1) and coil antenna terminal B

•  Keyless control module connector or terminals malfunction

•  Short to ground in wiring harness between the following terminals:

―  Coil antenna terminal C―Keyless control module terminal 2D

―  Coil antenna terminal D―Keyless control module terminal 2B

•  Open circuit in wiring harness between the following terminals:

―  Coil antenna terminal C―Keyless control module terminal 2D

―  Coil antenna terminal D―Keyless control module terminal 2B

•  Coil antenna malfunction

•  Keyless control module malfunction

DTC	Security light flashing pattern	11	No detected communication with coil antenna
POSSIBLE CAUSE	• Coil antenna connector or terminals malfunction • Open circuit in wiring harness between coil antenna terminal F and body ground • Open circuit or short to ground in coil antenna power supply circuit ― Short to ground in wiring harness between ENG 10 A fuse and coil antenna terminal B ― ENG 10 A fuse malfunction ― Open circuit in wiring harness between ignition switch (IG1) and coil antenna terminal B • Keyless control module connector or terminals malfunction • Short to ground in wiring harness between the following terminals: ― Coil antenna terminal C―Keyless control module terminal 2D ― Coil antenna terminal D―Keyless control module terminal 2B • Open circuit in wiring harness between the following terminals: ― Coil antenna terminal C―Keyless control module terminal 2D ― Coil antenna terminal D―Keyless control module terminal 2B • Coil antenna malfunction • Keyless control module malfunction

System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1

INSPECT COIL ANTENNA CONNECTOR AND TERMINALS

•  Turn the ignition switch to the LOCK position.

•  Disconnect the negative battery cable.

•  Disconnect the coil antenna connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is there any malfunction?

Yes

Repair or replace the connector or terminals, then go to Step 8.

No

Go to the next step.

2

INSPECT COIL ANTENNA GROUND CIRCUIT FOR OPEN CIRCUIT

•  Verify that the coil antenna connector is disconnected.

•  Inspect for continuity between coil antenna terminal F (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness for a possible open circuit, then go to Step 8.

3

INSPECT COIL ANTENNA POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT AND SHORT TO GROUND

•  Verify that the coil antenna connector is disconnected.

•  Reconnect the negative battery cable.

•  Turn the ignition switch to the ON position.

•  Measure the voltage at the coil antenna terminal B (wiring harness-side).

•  Is the voltage 8 V or more?

Yes

Go to the next step.

No

Inspect the ENG 10 A fuse.

•  If the fuse is melt:

―  Repair or replace the wiring harness for a possible short to ground.

―  Replace the fuse.

•  If the fuse is deterioration:

―  Replace the fuse.

•  If the fuse is normal:

―  Repair or replace the wiring harness for a possible open circuit.

Go to Step 8.

4

INSPECT KEYLESS CONTROL MODULE CONNECTOR AND TERMINALS

•  Turn the ignition switch to the LOCK position.

•  Disconnect the negative battery cable.

•  Disconnect the keyless control module connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is there any malfunction?

Yes

Repair or replace the connector or terminals, then go to Step 8.

No

Go to the next step.

5

INSPECT COIL ANTENNA COMMUNICATION CIRCUIT FOR SHORT TO GROUND

•  Verify that the coil antenna and keyless control module connectors are disconnected.

•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:

―  Coil antenna terminal C

―  Coil antenna terminal D

•  Is there continuity?

Yes

Repair or replace the wiring harness for a possible short to ground, then go to Step 8.

No

Go to the next step.

6

INSPECT COIL ANTENNA COMMUNICATION CIRCUIT FOR OPEN CIRCUIT

•  Verify that the coil antenna and keyless control module connectors are disconnected.

•  Inspect for continuity between the following terminals (wiring harness-side):

―  Coil antenna terminal C―Keyless control module terminal 2D

―  Coil antenna terminal D―Keyless control module terminal 2B

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness for a possible open circuit, then go to Step 8.

7

PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS COIL ANTENNA

•  Make sure to reconnect all disconnected connectors.

•  Reconnect the negative battery cable.

•  Clear the DTC using the M-MDS.
(See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)

•  Is the same DTC present?

Yes

Replace the coil antenna, then go to the next step.

(See COIL ANTENNA REMOVAL/INSTALLATION [ADVANCED KEYLESS AND START SYSTEM].)

No

Go to step 9.

8

VERIFY TROUBLESHOOTING COMPLETED

•  Make sure to reconnect all disconnected connectors.

•  Reconnect the negative battery cable.

•  Clear the DTC using the M-MDS.
(See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)

•  Perform the immobilizer system DTC inspection using the M-MDS.
(See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)

•  Is the same DTC present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS AND START SYSTEM].)

Go to the next step.

No

Go to the next step.

9

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	INSPECT COIL ANTENNA CONNECTOR AND TERMINALS • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Disconnect the coil antenna connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 8.
1		No	Go to the next step.
2	INSPECT COIL ANTENNA GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the coil antenna connector is disconnected. • Inspect for continuity between coil antenna terminal F (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
2		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
3	INSPECT COIL ANTENNA POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT AND SHORT TO GROUND • Verify that the coil antenna connector is disconnected. • Reconnect the negative battery cable. • Turn the ignition switch to the ON position. • Measure the voltage at the coil antenna terminal B (wiring harness-side). • Is the voltage 8 V or more?	Yes	Go to the next step.
3		No	Inspect the ENG 10 A fuse. • If the fuse is melt: ― Repair or replace the wiring harness for a possible short to ground. ― Replace the fuse. • If the fuse is deterioration: ― Replace the fuse. • If the fuse is normal: ― Repair or replace the wiring harness for a possible open circuit. Go to Step 8.
4	INSPECT KEYLESS CONTROL MODULE CONNECTOR AND TERMINALS • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • Disconnect the keyless control module connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 8.
4		No	Go to the next step.
5	INSPECT COIL ANTENNA COMMUNICATION CIRCUIT FOR SHORT TO GROUND • Verify that the coil antenna and keyless control module connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Coil antenna terminal C ― Coil antenna terminal D • Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 8.
5		No	Go to the next step.
6	INSPECT COIL ANTENNA COMMUNICATION CIRCUIT FOR OPEN CIRCUIT • Verify that the coil antenna and keyless control module connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Coil antenna terminal C―Keyless control module terminal 2D ― Coil antenna terminal D―Keyless control module terminal 2B • Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7	PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS COIL ANTENNA • Make sure to reconnect all disconnected connectors. • Reconnect the negative battery cable. • Clear the DTC using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].) • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].) • Is the same DTC present?	Yes	Replace the coil antenna, then go to the next step. (See COIL ANTENNA REMOVAL/INSTALLATION [ADVANCED KEYLESS AND START SYSTEM].)
7		No	Go to step 9.
8	VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Reconnect the negative battery cable. • Clear the DTC using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].) • Perform the immobilizer system DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS AND START SYSTEM].) Go to the next step.
8		No	Go to the next step.
9	VERIFY THAT NO OTHER DTCs ARE PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)].)
9		No	DTC troubleshooting completed.