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DTC B2226, B2227

id0802a0810400

DTC | B2226 | Crash zone sensor system internal circuit abnormal
--- | --- | ---
B2227 | Crash zone sensor system communication error
DETECTION CONDITION | Warning • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection with only detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure. • Malfunction in the wiring harness between the crash zone sensor and SAS control module • Malfunction in the crash zone sensor circuit
POSSIBLE CAUSE | • Open or short circuit in the wiring harness between the crash zone sensor and SAS control module • SAS control module malfunction • Crash zone sensor malfunction

Diagnostic procedure

Step | Inspection | Action
--- | --- | ---
1 | INSPECT CRASH ZONE SENSOR • Using the WDS or equivalent, check the following PID/DATA monitor: (See PID/DATA MONITOR TABLE.) - OD_F_CRSH • Is the crash zone sensor normal? | Yes | [Present malfunction diagnosis] Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.) [Past malfunction diagnosis] Troubleshooting completed.
No | Go to the next step.
2 | INSPECT WIRING HARNESS BETWEEN CRASH ZONE SENSOR AND SAS CONTROL MODULE Warning • Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the service warnings before handling the air bag system components. (See SERVICE WARNINGS.) (See SERVICE CAUTIONS.) • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable and wait for 1 min or more. • Remove the column cover. • Disconnect the clock spring connector. • Remove the passenger-side air bag module. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.) • Remove the driver and passenger-side B-pillar lower trim. (Vehicles with the pre-tensioner seat belt) • Disconnect the driver and passenger-side pre-tensioner seat belt connectors. (Vehicles with the pre-tensioner seat belt) • Remove the console. • Disconnect the SAS control module connector. • Disconnect the crash zone sensor connector. • Inspect the wiring harnesses between SAS control module terminal 1J and crash zone sensor terminal B, SAS control module terminal 1K and crash zone sensor terminal A for the following: - Short to ground - Short to power supply - Open circuit • Is the wiring harness normal? | Yes | Replace the crash zone sensor, then go to the next step. (See CRASH ZONE SENSOR REMOVAL/INSTALLATION.)
No | Replace the air bag wiring harness.
3 | INSPECT SAS CONTROL MODULE • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable and wait for 1 min or more. • Connect the SAS control module connector. • Connect the crash zone sensor connector. • Connect the passenger-side air bag module connector. • Connect the driver-side air bag module connector. • Is DTC B2226 or B2227 displayed? | Yes | [Present malfunction diagnosis] Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.) [Past malfunction diagnosis] Troubleshooting completed.
No | Troubleshooting completed.