DESCRIPTION
Each speed sensor detects the wheel speed and sends the signals to the skid control ECU (brake booster with master cylinder assembly). These signals are used for ABS control.
HINT:
The output voltage values shown below are for when the vehicle wire harnesses are connected to the skid control ECU (brake booster with master cylinder assembly) and the speed sensors.
DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | MIL | Note |
---|---|---|---|---|---|---|
C1415 | Rear Speed Sensor RH Circuit Output | 524 543 |
|
| Comes on |
|
C1416 | Rear Speed Sensor LH Circuit Output | 534 544 |
|
| Comes on |
|
MONITOR DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) monitors the output value of the speed sensors. When the vehicle is being driven and a sudden irregular change in acceleration due to iron particles being attached to the speed sensor is detected repeatedly, or periodic sudden changes in acceleration due to iron particles being attached to the speed sensor rotor is detected, the skid control ECU (brake booster with master cylinder assembly) judges that speed sensor noise is occurring and illuminates the MIL and stores a DTC.
Also, when the vehicle is being driven and the output value of the speed sensor is momentarily interrupted repeatedly, the skid control ECU (brake booster with master cylinder assembly) judges that there is a momentary interruption in the speed sensor circuit and illuminates the MIL and stores a DTC.
MONITOR STRATEGY
Related DTCs | C0510 (Case 1): Speed sensor intermittent/erratic C0510 (Case 2): Speed sensor intermittent/erratic C0516 (Case 1): Speed sensor intermittent/erratic C0516 (Case 2): Speed sensor intermittent/erratic |
Required Sensors/Components(Main) | Speed sensor Speed sensor rotor |
Required Sensors/Components(Related) | Speed sensor |
Frequency of Operation | Continuous |
Duration | -: C0510 (Case 1) and C0516 (Case 1) 255 times: C0510 (Case 2) and C0516 (Case 2) |
MIL Operation | Immediately |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
All Monitor runs whenever the following DTCs are not stored | C0501, C0507, C050D, C0513 (Speed sensor range/performance) C0502, C0508, C050E, C0514 (Speed sensor circuit low) C0503, C0509, C050F, C0515 (Speed sensor circuit high) C140B, C140C, C140D, C140E (2 wheel speed sensors malfunction) C14E1, C14E4, C14E7, C14EA (Case 1) (Speed sensor voltage circuit low) C14E1, C14E4, C14E7, C14EA (Case 2) (Speed sensor voltage circuit low) |
Speed sensor fail (C0501, C0502, C0503, C0507, C0508, C0509, C050D, C050E, C050F, C0513, C0514, C0515, C140B, C140C, C140D, C140E, C14E1, C14E4, C14E7, C14EA) | Not detected |
All of the following conditions are met | - |
Brake system voltage 1 (VM1) | Less than 16.44 V |
Speed sensor pulse | No signal |
Wheels are not locked | Met |
Vehicle speed | 15 km/h (9 mph) or more |
Speed sensor fail (C0501, C0502, C0503, C0507, C0508, C0509, C050D, C050E, C050F, C0513, C0514, C0515, C140B, C140C, C140D, C140E, C14E1, C14E4, C14E7, C14EA) | Not detected |
TYPICAL MALFUNCTION THRESHOLDS
C0510 and C0516 (Case 1) Either of the following conditions is met | - |
Speed sensor noise | Exist |
Speed sensor a piece of metal rotor noise | Exist |
Edge of speed sensor outage | Exist |
COMPONENT OPERATING RANGE
C0510 and C0516 (Case 1) Both of the following conditions are met | - |
Speed sensor fail (C0501, C0502, C0503, C0507, C0508, C0509, C050D, C050E, C050F, C0513, C0514, C0515, C140B, C140C, C140D, C140E, C14E1, C14E4, C14E7, C14EA) | Not detected |
Speed sensor pass flag | On |
All of the following conditions are met | - |
Brake system voltage 1 (VM1) | Less than 16.44 V |
Speed sensor pulse | No signal |
Wheels are not locked | Met |
Vehicle speed | 15 km/h (9 mph) or more |
Speed sensor fail (C0501, C0502, C0503, C0507, C0508, C0509, C050D, C050E, C050F, C0513, C0514, C0515, C140B, C140C, C140D, C140E, C14E1, C14E4, C14E7, C14EA) | Not detected |
Speed sensor pass flag | On |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".
Click here
PROCEDURE
1. | CHECK DTC |
(a) Clear the DTCs.
Click here
Chassis > ABS/VSC/TRAC > Clear DTCs(b) Turn the power switch off.
(c) Turn the power switch on (IG).
(d) Check if the same DTC is output.
Click here
Chassis > ABS/VSC/TRAC > Trouble Codes Result | Proceed to |
---|---|
DTC C1415 is output. | A |
DTC C1416 is output. | B |
B | GO TO STEP 9 |
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2. | READ VALUE USING TECHSTREAM (MOMENTARY INTERRUPTION) |
(a) Using the Techstream, check for any momentary interruptions in the wire harness and connector corresponding to a DTC.
Click here
Chassis > ABS/VSC/TRAC > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RR Speed Sensor Voltage Open | Rear speed sensor RH voltage open detection | Error or Normal | Error: Momentary interruption Normal: Normal | - |
Tester Display |
---|
RR Speed Sensor Voltage Open |
(b) Check for any momentary interruptions in the wire harness and connectors.
OK:
There are no momentary interruptions.
NOTICE:
Perform the above inspection before removing the sensor and connector.
NG | GO TO STEP 5 |
|
3. | READ VALUE USING TECHSTREAM (REAR SPEED SENSOR RH) |
(a) Select the Data List on the Techstream.
Click here
Chassis > ABS/VSC/TRAC > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RR Wheel Speed | Rear speed sensor RH | Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
Tester Display |
---|
RR Wheel Speed |
(b) Check the rear speed sensor RH output value.
OK:
The output value changes in accordance with the vehicle speed.
NG | GO TO STEP 5 |
|
4. | RECONFIRM DTC |
(a) Clear the DTCs.
Click here
Chassis > ABS/VSC/TRAC > Clear DTCs(b) Turn the power switch off.
(c) Turn the power switch on (READY).
(d) Perform a road test.
(e) Check if the same DTC is output.
Click here
Chassis > ABS/VSC/TRAC > Trouble Codes Result | Proceed to |
---|---|
DTC C1415 is not output. | A |
DTC C1415 is output. | B |
A | USE SIMULATION METHOD TO CHECK |
B | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
5. | CHECK REAR SPEED SENSOR RH INSTALLATION |
(a) Turn the power switch off. |
|
(b) Check the rear speed sensor RH installation.
OK:
There is no clearance between the sensor and the rear axle hub.
HINT:
Because the rear axle hub and bearing assembly RH cannot be disassembled, if the rear speed sensor RH needs replacement, replace the rear axle hub and bearing assembly RH.
NG | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
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6. | INSPECT NO. 1 PARKING BRAKE WIRE ASSEMBLY |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the b2 and bN1 skid control sensor wire RH (No. 1 parking brake wire assembly) connectors.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
b2-2 (RA+) - bN1-1 (RR+) | Always | Below 1 Ω |
b2-2 (RA+) or bN1-1 (RR+) - Body ground and other terminals | Always | 10 kΩ or higher |
b2-1 (RA-) - bN1-2 (RR-) | Always | Below 1 Ω |
b2-1 (RA-) or bN1-2 (RR-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE NO. 1 PARKING BRAKE WIRE ASSEMBLY |
|
7. | CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 1 PARKING BRAKE WIRE ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(b) Disconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A45-7 (RR+) - bN1-1 (RR+) | Always | Below 1 Ω |
A45-7 (RR+) or bN1-1 (RR+) - Body ground | Always | 10 kΩ or higher |
A45-8 (RR-) - bN1-2 (RR-) | Always | Below 1 Ω |
A45-8 (RR-) or bN1-2 (RR-) - Body ground | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. | INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) |
(a) Reconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector. |
|
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
bN1-1 (RR+) - Body ground | Power switch on (IG) | 8 to 14 V |
NOTICE:
Check the rear speed sensor RH signal after replacement.
Click here
HINT:
The rear speed sensor RH and rear speed sensor rotor RH are incorporated into the rear axle hub and bearing assembly RH.
If the rear speed sensor RH and rear speed sensor rotor RH need to be replaced, replace the rear axle hub and bearing assembly RH.
OK | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY RH |
NG | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
9. | READ VALUE USING TECHSTREAM (MOMENTARY INTERRUPTION) |
(a) Using the Techstream, check for any momentary interruptions in the wire harness and connector corresponding to a DTC.
Click here
Chassis > ABS/VSC/TRAC > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RL Speed Sensor Voltage Open | Rear speed sensor LH voltage open detection | Error or Normal | Error: Momentary interruption Normal: Normal | - |
Tester Display |
---|
RL Speed Sensor Voltage Open |
(b) Check for any momentary interruptions in the wire harness and connectors.
OK:
There are no momentary interruptions.
NOTICE:
Perform the above inspection before removing the sensor and connector.
NG | GO TO STEP 12 |
|
10. | READ VALUE USING TECHSTREAM (REAR SPEED SENSOR LH) |
(a) Select the Data List on the Techstream.
Click here
Chassis > ABS/VSC/TRAC > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
RL Wheel Speed | Rear speed sensor LH | Min.: 0 km/h (0 mph), Max.: 326.4 km/h (203 mph) | Vehicle stopped: 0 km/h (0 mph) | When driving at constant speed: No large fluctuations |
Tester Display |
---|
RL Wheel Speed |
(b) Check the rear speed sensor LH output value.
OK:
The output value changes in accordance with the vehicle speed.
NG | GO TO STEP 12 |
|
11. | RECONFIRM DTC |
(a) Clear the DTCs.
Click here
Chassis > ABS/VSC/TRAC > Clear DTCs(b) Turn the power switch off.
(c) Turn the power switch on (READY).
(d) Perform a road test.
(e) Check if the same DTC is output.
Click here
Chassis > ABS/VSC/TRAC > Trouble Codes Result | Proceed to |
---|---|
DTC C1416 is not output. | A |
DTC C1416 is output. | B |
A | USE SIMULATION METHOD TO CHECK |
B | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
12. | CHECK REAR SPEED SENSOR LH INSTALLATION |
(a) Turn the power switch off. |
|
(b) Check the rear speed sensor LH installation.
OK:
There is no clearance between the sensor and the rear axle hub.
HINT:
Because the rear axle hub and bearing assembly LH cannot be disassembled, if the rear speed sensor LH needs replacement, replace the rear axle hub and bearing assembly LH.
NG | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
|
13. | INSPECT NO. 2 PARKING BRAKE WIRE ASSEMBLY |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the b4 and bN2 skid control sensor wire LH (No. 2 parking brake wire assembly) connectors.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
b4-2 (LA+) - bN2-1 (RL+) | Always | Below 1 Ω |
b4-2 (LA+) or bN2-1 (RL+) - Body ground and other terminals | Always | 10 kΩ or higher |
b4-1 (LA-) - bN2-2 (RL-) | Always | Below 1 Ω |
b4-1 (LA-) or bN2-2 (RL-) - Body ground and other terminals | Always | 10 kΩ or higher |
NG | REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY |
|
14. | CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - NO. 2 PARKING BRAKE WIRE ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(b) Disconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A45-34 (RL+) - bN2-1 (RL+) | Always | Below 1 Ω |
A45-34 (RL+) or bN2-1 (RL+) - Body ground | Always | 10 kΩ or higher |
A45-35 (RL-) - bN2-2 (RL-) | Always | Below 1 Ω |
A45-35 (RL-) or bN2-2 (RL-) - Body ground | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
15. | INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) |
(a) Reconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector. |
|
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
bN2-1 (RL+) - Body ground | Power switch on (IG) | 8 to 14 V |
NOTICE:
Check the rear speed sensor LH signal after replacement.
Click here
HINT:
The rear speed sensor LH and rear speed sensor rotor LH are incorporated into the rear axle hub and bearing assembly LH.
If the rear speed sensor LH and rear speed sensor rotor LH need to be replaced, replace the rear axle hub and bearing assembly LH.
OK | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY LH |
NG | REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |