B2415

LIGHTING: LIGHTING SYSTEM: B2415: Vehicle Speed Sensor Malfunction

DTC B2415 - Vehicle Speed Sensor Malfunction

DESCRIPTION

The AFS ECU receives signals regarding the front wheel speed from the skid control ECU.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM)
(a) Check that vehicle stability control system DTCs are not output Service Precautions.
Result:






B -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU WITH ACTUATOR - AFS ECU)




(a) Disconnect the A58 skid control ECU with actuator connector.
(b) Disconnect the A28 AFS ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK AFS ECU




(a) Disconnect the A28 AFS ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:










(1) Waveform 1: Oscilloscope wave






OK:
Waveform is output as shown in the illustration.
Result:






C -- REPLACE BRAKE ACTUATOR ASSEMBLY
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPLACE AFS ECU