B2415
LIGHTING: LIGHTING SYSTEM: B2415: Vehicle Speed Sensor Malfunction
B2415 - Vehicle Speed Sensor Malfunction
DESCRIPTION
2GR - FSE
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 the vehicle stability control systems
OK:
Normal system code is output.
NG -- GO TO FLOW CHART
OK -- Continue to next step.
2. CHECK WIRE HARNESS (SKID CONTROL ECU - AFS ECU)
(a) Disconnect the A58 skid control ECU connector.
(b) Disconnect the A28 AFS ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
3. CHECK AFS ECU
(a) Reconnect the A28 AFS ECU connector.
(b) Measure the voltage of the connector.
Standard voltage:
(1) Waveform 1: Oscilloscope wave
OK:
Waveform is output as shown in the illustration.
Result:
C -- REPLACE SKID CONTROL ECU ASSEMBLY
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPLACE AFS ECU
DESCRIPTION
1UR - FSE
The AFS ECU receives signals regarding the front wheel speed from the skid control ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)
(a) Check the electronically controlled brake systems.
OK:
Normal system code is output.
NG -- GO TO FLOW CHART
OK -- Continue to next step.
2. CHECK WIRE HARNESS (SKID CONTROL ECU - AFS ECU)
(a) Disconnect the A28 AFS ECU connector.
(b) Disconnect the A13 and A15 skid control ECU connectors.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
3. CHECK AFS ECU
(a) Reconnect the A28 AFS ECU connector.
(b) Measure the voltage of the connector.
Standard voltage:
(1) Waveform 1: Oscilloscope wave
OK:
Waveform is output as shown in the illustration.
Result:
C -- REPLACE SKID CONTROL ECU ASSEMBLY
B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
A -- REPLACE AFS ECU