C1415
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1415,C1416: Rear Speed Sensor RH Output Malfunction
C1416 - Rear Speed Sensor LH Output Malfunction
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for ABS/VSC/TRAC control.
Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change when the rotors turn.
Each speed sensor detects that magnetic change and sends a pulse signal to the skid control ECU.
HINT
* DTC C1415 is for the rear speed sensor RH.
* DTC C1416 is for the rear speed sensor LH.
WIRING DIAGRAM
Refer to DTCs C1403 and C1404 C1403.
INSPECTION PROCEDURE
NOTICE:
When replacing the brake actuator assembly, perform zero point calibration Component Tests and General Diagnostics.
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (RR/RL Speed Open)
(a) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to the DTC Check For Intermittent Problems.
ABS/VSC/TRAC:
OK:
There are no momentary interruptions.
HINT
Perform the above inspection before removing the sensor and connector.
NG -- CHECK REAR SPEED SENSOR INSTALLATION
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (RR/RL WHEEL SPEED)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Start the engine.
(d) Select the Data List mode on the Techstream Data List / Active Test.
ABS/VSC/TRAC:
(e) Check that there is no difference between the speed value output from the speed sensor displayed on the Techstream and the speed value displayed on the speedometer when driving the vehicle.
HINT
Factors that affect the indicated vehicle speed include tire size, tire inflation, and tire wear. The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, see the reference chart Component Tests and General Diagnostics.
OK:
The speed value output from the speed sensor displayed on the Techstream is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
NG -- CHECK REAR SPEED SENSOR INSTALLATION
OK -- Continue to next step.
3. RECONFIRM DTC
(a) Turn the ignition switch off.
(b) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(c) Start the engine.
(d) Drive the vehicle at a speed of 40 km/h (25 mph) or more for at least 60 seconds.
(e) Check if the same DTC is output Reading and Clearing Diagnostic Trouble Codes.
Result:
HINT
If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.
B -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal
A -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) How To Proceed With Troubleshooting
4. CHECK REAR SPEED SENSOR INSTALLATION
(a) Turn the ignition switch off.
(b) for 2WD:
Check the skid control sensor installation.
OK:
There is no clearance between the sensor and the rear axle carrier.
(c) for 4WD:
Check the rear speed sensor installation.
OK:
There is no clearance between the sensor and the rear axle carrier.
The installation bolt is tightened properly.
Torque
8.5 N*m (87 kgf*cm, 75 in.*lbf)
Result:
D -- INSTALL REAR SPEED SENSOR CORRECTLY Installation
C -- REPLACE REAR AXLE HUB AND BEARING ASSEMBLY Removal
B -- CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)
A -- Continue to next step.
5. CHECK REAR SPEED SENSOR TIP
(a) Remove the rear speed sensor Removal.
(b) Check the speed sensor tip.
OK:
No scratches, oil, or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after cleaning or replacement Test Mode Procedure.
NG -- CLEAN OR REPLACE REAR SPEED SENSOR
OK -- Continue to next step.
6. CHECK REAR SPEED SENSOR ROTOR
(a) Remove the rear axle hub and bearing assembly Removal.
(b) Check the speed sensor rotor.
OK:
No scratches, oil, or foreign matter on the rotors.
Result:
NOTICE:
Check the speed sensor signal after cleaning or replacement Test Mode Procedure.
HINT
If the rear speed sensor rotor needs to be replaced, replace it together with the rear axle hub and bearing assembly.
B -- CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SKID CONTROL SENSOR/REAR SPEED SENSOR)
A -- CLEAN OR REPLACE REAR SPEED SENSOR ROTOR
7. CHECK HARNESS AND CONNECTOR (SKID CONTROL SENSOR WIRE)
(a) Make sure that there is no looseness in the locking part and connecting part of the connectors.
(b) Disconnect the skid control sensor wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for RH
for LH
NOTICE:
Check the speed sensor signal after replacement Test Mode Procedure.
NG -- REPLACE SKID CONTROL SENSOR WIRE Removal
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - SKID CONTROL SENSOR/REAR SPEED SENSOR)
(a) Install the rear speed sensor and the rear speed sensor rotor.
(b) for 2WD:
Reconnect the skid control sensor wire.
(c) Make sure that there is no looseness in the locking part and connecting part of the connectors.
(d) Disconnect the skid control ECU connector and the rear speed sensor connector.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for 2WD RH
for 4WD RH
for 2WD LH
for 4WD LH
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. INSPECT SKID CONTROL ECU (SENSOR INPUT)
(a) Reconnect the skid control ECU connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for 2WD RH
for 4WD RH
for 2WD LH
for 4WD LH
Result:
NOTICE:
Check the speed sensor signal after replacement Test Mode Procedure.
HINT
If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.
C -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal
B -- REPLACE REAR SPEED SENSOR Removal
A -- REPLACE REAR AXLE HUB AND BEARING ASSEMBLY Removal