B129A

B129A - Driver Blind Spot Sensor Incompatible Version

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON. Vehicle speed greater than 6 mph (9.6 km/h).

• Set Condition: This fault will present itself during a reflashing session. When the flashing tool attempts to enter the programming session, the blind spot module (blind spot module) will query the sensors for their boot loader version. If the returned version is not compatible with the blind spot module boot loader, the blind spot module will not allow the system to flash.






Test Step 1 - Check For Active DTC

• Turn the ignition ON.

• With the scan tool, read blind spot module DTCs.

Does the scan tool display B129A - Driver Blind Spot Sensor Incompatible Version?

Yes

• Replace the left rear blind spot sensor. .

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior