DTC B10A5:12 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c387600

DESCRIPTION

Open circuit or short to power supply in keyless beeper circuit
DETECTION CONDITION
•  Keyless beeper circuit voltage is higher than threshold (2.2—6.5 V), while the circuit is not active.
POSSIBLE CAUSE
•  Keyless beeper connector or terminals malfunction
•  Open circuit in wiring harness between keyless beeper terminal B and body ground
•  Keyless control module connector or terminals malfunction
•  Short to power supply in wiring harness between keyless beeper terminal A and keyless control module terminal 3K
•  Keyless beeper malfunction
•  Open circuit in wiring harness between keyless beeper terminal A and keyless control module terminal 3K
•  Keyless control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT KEYLESS BEEPER CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the keyless beeper 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 7.
No
Go to the next step.
2
INSPECT KEYLESS BEEPER GROUND CIRCUIT FOR OPEN CIRCUIT
•  Keyless beeper connector is disconnected.
•  Inspect for continuity between keyless beeper terminal B (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 7.
3
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 Step 7.
No
Go to the next step.
4
INSPECT KEYLESS BEEPER CIRCUIT FOR SHORT TO POWER SUPPLY
•  Keyless beeper and keyless control module connectors are disconnected.
•  Reconnect the negative battery cable.
•  Switch the ignition to ON.
•  Measure the voltage at the keyless beeper terminal A (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
No
Go to the next step.
5
INSPECT KEYLESS BEEPER
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Inspect the keyless beeper.
•  Is there any malfunction?
Yes
Replace the keyless beeper, then go to Step 7.
(See KEYLESS BEEPER REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
Go to the next step.
6
INSPECT KEYLESS BEEPER CIRCUIT FOR OPEN CIRCUIT
•  Keyless beeper and keyless control module connectors are disconnected.
•  Inspect for continuity between keyless beeper terminal A (wiring harness-side) and keyless control module terminal 3K (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
7
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC from the keyless control module using the M-MDS.
•  Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the keyless control module, then go to the next step.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [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 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
DTC troubleshooting completed.