DTC B1093 [ADVANCED KEYLESS ENTRY AND START SYSTEM]SM2445809
DTC B1093 [ADVANCED KEYLESS ENTRY AND START SYSTEM]

id09021g802800

DTC B1093

Steering lock unit communication error
DETECTION CONDITION
• Unprogrammed steering lock unit
POSSIBLE CAUSE
• Open or short circuit in wiring harness between keyless control module and steering lock unit
• Steering lock unit malfunction
• Keyless control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY
• Disconnect keyless control module connector and steering lock unit connector.
• Inspect the wiring harness between keyless control module connector terminal 3H and steering lock unit connector terminal K for the following:?
― Short to body ground
― Short to power supply
― Open circuit
• Is the wiring harness normal?
Yes
Perform the resetting procedure for the steering lock unit.
(See STEERING LOCK UNIT ID CODE REGISTRATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
(See STEERING LOCK UNIT ID CODE REGISTRATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
Go to the next step.
No
Repair the wiring harness between the steering lock unit and keyless control module.
Go to the next step.
2
INSPECT STEERING LOCK UNIT
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
― M-MDS: B1093
Yes
Replace the steering lock unit and perform the resetting procedure for the steering lock unit.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
(See STEERING LOCK UNIT ID CODE REGISTRATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
Go to the next step.
No
DTC troubleshooting completed.
3
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
― M-MDS: B1093
Yes
Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No
DTC troubleshooting completed.