DTC B1133 [Advanced Keyless And Start System]

WARNING: This page is about a different car, the 2010 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1133 CHART

DTC B1133	Keyless antenna (front driver side)
DETECTION CONDITION	Keyless antenna dose not operated.
POSSIBLE CAUSE	Open or short circuit in wiring harness between keyless control module and keyless antenna (front driver door) Keyless antenna (front driver door) malfunction Keyless control module malfunction
Courtesy of MAZDA MOTORS CORP.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY Disconnect keyless control module connector and keyless antenna (front driver door) connector. Inspect the wiring harness between keyless antenna (front driver door) terminal A and keyless control module terminal 1 A, and keyless antenna (front driver door) terminal B and keyless control module terminal 1B for the following: Short to ground Short to power supply Open circuit Is there continuity?	Yes	Replace keyless antenna (front driver door). (See KEYLESS ANTENNA REMOVAL/INSTALLATION ) Go to next step.
1		No	Repair the wiring harness between the keyless antenna (front driver door) 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. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION .) (See CARD KEY ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM] ) (See STEERING LOCK UNIT ID CODE REGISTRATION [WITH ADVANCED KEYLESS SYSTEM] ) (See KEYLESS CONTROL MODULE CONFIGURATION ) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH ADVANCED KEYLESS SYSTEM] )
2		No	DTC troubleshooting completed.