DTC B1133 [ADVANCED KEYLESS SYSTEM]


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DTC B1133

Keyless antenna (RF)

DETECTION CONDITION

Keyless antenna dose not operated.

POSSIBLE CAUSE

• Keyless antenna (RF) malfunction
• Open or short circuit in wiring harness between keyless control module and keyless antenna
• Keyless control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY
• Disconnect keyless control module connector and keyless antenna (RF) connector.
• Inspect the continuity between the following connector terminals.
- keyless control module: 2A-keyless antenna: A
- keyless control module: 2B-keyless antenna: B
• Is there continuity?
Yes
• Replace keyless antenna (RF).
• Go to next step.
No
• Repair the wiring harness between the keyless antenna (RF) and keyless control module.
• Go to next step.
2
INSPECT KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Is the DTC displayed?
- M-MDS: B1133
Yes
Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module.
No
DTC troubleshooting completed.