DTC B11E8:12 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c405200

DESCRIPTION

Short to power supply in wiring harness between ABS HU/CM or DSC HU/CM and keyless control module
DETECTION CONDITION
•  ABS driver voltage higher than the specification (2.2—6.5 V) is detected for 0.1 s with the ABS driver not operating.
POSSIBLE CAUSE
•  ABS HU/CM or DSC HU/CM connector or terminals malfunction
•  BCM connector or terminals malfunction
•  Keyless control module connector or terminals malfunction
•  Short to power supply in wiring harness between the following terminals:
―  ABS HU/CM or DSC HU/CM terminal AF—BCM terminal 1E
―  BCM terminal 6K—Keyless control module terminal 4S
•  ABS HU/CM or DSC HU/CM malfunction
•  BCM malfunction
•  Keyless control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT ABS HU/CM OR DSC HU/CM CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the ABS HU/CM or DSC HU/CM 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 BCM CONNECTOR CONDITION
•  Disconnect the BCM 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.
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 ABS DRIVER CIRCUIT FOR SHORT TO POWER SUPPLY
•  ABS HU/CM or DSC HU/CM, BCM and keyless control module connectors are disconnected.
•  Measure the voltage at the following terminals (wiring harness-side):
―  BCM terminal 1E
―  BCM terminal 6K
•  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 ABS HU/CM OR DSC HU/CM
•  Make sure to reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Measure the voltage at the ABS HU/CM or DSC HU/CM terminal AF (wiring harness-side).
•  Is the voltage normal?
Yes
Go to the next step.
No
Replace the ABS HU/CM or DSC HU/CM, then go to Step 7.
(See ABS HU/CM REMOVAL/INSTALLATION.)
(See DSC HU/CM REMOVAL/INSTALLATION.)
6
INSPECT BCM
•  Measure the voltage at the following terminals (wiring harness-side):
―  BCM terminal 1E
―  BCM terminal 6K
•  Is the voltage normal?
Yes
Go to the next step.
No
Replace the BCM, then go to the next step.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
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.
•  Switch the ignition to off.
•  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.