B2134

DTC B2134: Wheel Speed (RLP, RRP line) Circuit Open

NOTE: Before troubleshooting, check the VSA system DTCs. If the VSA system is OK, do this troubleshooting.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Turn the headlight switch ON.
4. Test-drive at 25 mph (40 km/h) for 1 minute.
5. Check for DTCs with the HDS.

Is DTC B2134 indicated?

YES - Go to step 6.

NO - Intermittent failure, the adaptive front lighting system is OK at this time. Check for loose or poor connections.

6. Test-drive at 19 mph (30 km/h) for a few minutes.
7. Select the AFS from the HDS, and enter the DATA LIST.
8. Check the ON/OFF information of the LEFT REAR WHEEL SPEED and RIGHT REARWHEEL SPEED in the DATA LIST.

Is the information for both ON?

YES - Faulty adaptive front lighting control unit, replace it and do the adaptive front lighting control unit learning procedure.

NO - Go to step 9.

9. Turn the ignition switch OFF.
10. Disconnect the adaptive front lighting control unit 40P connector.
11. Disconnect the VSA modulator-control unit 47P connector.




12. Connect VSA modulator-control unit 47P connector terminals No. 9 and No. 47 to body ground with jumper wires.




13. Check for continuity between body ground and adaptive front lighting control unit 40P connector terminals No. 20 and No. 40 individually.

Is there continuity?

YES - Replace the VSA modulator-control unit.

NO - Repair an open in the wire.