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Home >> Mazda >> 2011 >> 3 Mazdaspeed, 2.3 3 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic [Immobilizer System (Advanced Keyless And Push Button Start System)]] >> Security Light: Not Illuminated, DTC B10E6:12/-[Immobilizer System (Advanced Keyless Entry And Push Button Start System)]
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Security Light: Not Illuminated, DTC B10E6:12/-[Immobilizer System (Advanced Keyless Entry And Push Button Start System)]

DTC Security light flashing pattern - Short to power supply in coil antenna power supply circuit
M-MDS display Keyless control module B10E6:12
PCM -
DETECTION CONDITION 
  • Coil antenna power supply circuit voltage is higher than the specification when the circuit is not active.
POSSIBLE CAUSE 
  • Coil antenna connector or terminals malfunction
  • Keyless control module connector or terminals malfunction
  • Push button start connector or terminals malfunction
  • Short to power supply in coil antenna power supply circuit
  • Push button start malfunction
  • Coil antenna malfunction
  • Keyless control module malfunction
G07874896
DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT COIL ANTENNA CONNECTOR CONDITION 
  • Switch the ignition to off.
  • 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 the next step.
No Go to the next step.
2 INSPECT KEYLESS CONTROL MODULE CONNECTOR CONDITION 
  • 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 the next step.
No Go to the next step.
3 INSPECT PUSH BUTTON START CONNECTOR CONDITION 
  • Disconnect the push button start 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 the next step.
No Go to the next step.
4 INSPECT COIL ANTENNA POWER SUPPLY CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Coil antenna, keyless control module and push button start connectors are disconnected.
  • Reconnect the negative battery cable.
  • Measure the voltage at the keyless control module terminal 3M (wiring harness-side).
  • Is the voltage more than 3.0 V?
Yes Repair or replace the wiring harness for a possible short to power supply, then go to the next step.
No Go to the next step.
5 INSPECT PUSH BUTTON START 
  • Reconnect the push button start connector.
  • Measure the voltage at the keyless control module terminal 3M (wiring harness-side).
  • Is the voltage more than 3.0 V?
Yes Replace the push button start, then go to the next step.
(See PUSH BUTTON START REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] ).
No Go to the next step.
6 VERIFY COIL ANTENNA MALFUNCTION 
Yes Replace the coil antenna, then go to the next step.
(See COIL ANTENNA REMOVAL/INSTALLATION ).
No Go to the next step.
7 VERIFY TROUBLESHOOTING COMPLETED 
Yes Replace the keyless control module and program the immobilizer system-related parts, then go to the next step.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION ).
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] ).
No Go to the next step.
8 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 ENTRY AND PUSH BUTTON START SYSTEM)] ).
No DTC troubleshooting completed.