DESCRIPTION Refer to DTCs C1413 and C1414. Click here
DTC No. | Detection Item |
INF Code | DTC Detection Condition |
Trouble Area | MIL |
Note | C1405 |
Open or Short in Front Speed Sensor RH Circuit |
503 506 508 |
- INF Code: 503
- An open in the speed sensor signal circuit continues for 0.5 seconds or more.
- INF Code: 506
- The speed sensor power source voltage is low for 0.5 seconds or more.
- INF Code: 508
- The speed sensor power source voltage is low for 0.2 seconds, and does not return to normal for 60 seconds or more.
|
- Front speed sensor RH
- Wire harness or connector
- Skid control ECU (brake booster with master cylinder assembly)
| Comes on |
- INF Code 503: SAE Code C0508 and C0509
- INF Code 506: SAE Code C14E4 (Case 1)
- INF Code 508: SAE Code C14E4 (Case 2)
- ABS DTC
| C1406 |
Open or Short in Front Speed Sensor LH Circuit |
513 516 518 |
- INF Code: 513
- An open in the speed sensor signal circuit continues for 0.5 seconds or more.
- INF Code: 516
- The speed sensor power source voltage is low for 0.5 seconds or more.
- INF Code: 518
- The speed sensor power source voltage is low for 0.2 seconds, and does not return to normal for 60 seconds or more.
|
- Front speed sensor LH
- Wire harness or connector
- Skid control ECU (brake booster with master cylinder assembly)
| Comes on |
- INF Code 513: SAE Code C0502 and C0503
- INF Code 516: SAE Code C14E1 (Case 1)
- INF Code 518: SAE Code C14E1 (Case 2)
- ABS DTC
| MONITOR DESCRIPTION
The
skid control ECU (brake booster with master cylinder assembly) monitors
the output voltage and power supply voltage of the speed sensors. If
the output voltage of the speed sensor is outside the normal range, or
if the voltage at VM1 of the skid control ECU (brake booster with master
cylinder assembly) is normal and the power supply voltage of the speed
sensor drops below a specific value, the skid control ECU (brake booster
with master cylinder assembly) judges that the circuit of the speed
sensor is malfunctioning and illuminates the MIL and stores a DTC. MONITOR STRATEGY
Related DTCs | C0502: Speed sensor circuit low C0503: Speed sensor circuit high
C0508: Speed sensor circuit low C0509: Speed sensor circuit high
C14E1 (Case 1): Speed sensor voltage circuit low C14E1 (Case 2): Speed sensor voltage circuit low
C14E4 (Case 1): Speed sensor voltage circuit low C14E4 (Case 2): Speed sensor voltage circuit low |
Required Sensors/Components(Main) | Speed sensor
Skid control ECU (brake booster with master cylinder assembly) |
Required Sensors/Components(Related) | Speed sensor
Skid control ECU (brake booster with master cylinder assembly) |
Frequency of Operation | Continuous |
Duration | 0.5 seconds: C0502, C0503, C0508, C0509, C14E1 (Case 1) and C14E4 (Case 1)
60 seconds: C14E1 (Case 2) and C14E4 (Case 2) |
MIL Operation | Immediately |
Sequence of Operation | None | TYPICAL ENABLING CONDITIONS C0502, C0503, C0508 and C0509
Monitor runs whenever the following DTCs are not stored |
C14E1, C14E4, C14E7, C14EA (Case 1) (Speed sensor voltage circuit low)
C14E1, C14E4, C14E7, C14EA (Case 2) (Speed sensor voltage circuit low) |
All of the following conditions are met | - |
Brake system voltage 1 (VM1) | Higher than 7.54 V |
Serial communication with low side IC | Valid |
Command to speed sensor power supply |
On | Speed sensor fail (C14E1, C14E4, C14E7, C14EA) |
Not detected | C14E1 and C14E4 (Case 1)
Monitor runs whenever the following DTCs are not stored |
C0502, C0508, C050E, C0514 (Speed sensor circuit low) C0503, C0509, C050F, C0515 (Speed sensor circuit high)
C14E1, C14E4, C14E7, C14EA (Case 2) (Speed sensor voltage circuit low) |
All of the following conditions are met | - |
Brake system voltage 1 (VM1) | Higher than 7.54 V |
Serial communication with low side IC | Valid |
Command to speed sensor power supply |
On | Speed
sensor fail (C0502, C0503, C0508, C0509, C050E, C050F, C0514, C0515,
C14E1 (Case 2), C14E4 (Case 2), C14E7 (Case 2), C14EA (Case 2)) |
Not detected | C14E1 and C14E4 (Case 2)
Monitor runs whenever the following DTCs are not stored |
C0502, C0508, C050E, C0514 (Speed sensor circuit low) C0503, C0509, C050F, C0515 (Speed sensor circuit high)
C14E1, C14E4, C14E7, C14EA (Case 1) (Speed sensor voltage circuit low) |
All of the following conditions are met | - |
Brake system voltage 1 (VM1) | Higher than 7.54 V |
Serial communication with low side IC | Valid |
Command to speed sensor power supply |
On | Speed
sensor fail (C0502, C0503, C0508, C0509, C050E, C050F, C0514, C0515,
C14E1 (Case 1), C14E4 (Case 1), C14E7 (Case 1), C14EA (Case 1)) |
Not detected | TYPICAL MALFUNCTION THRESHOLDS C0502 and C0508
Speed sensor voltage | Less than 0.4 V | C0503 and C0509
Speed sensor voltage | Higher than 3.3 V | C14E1 and C14E4 (Case 1)
Speed sensor power supply voltage | Less than 6.1 V | C14E1 and C14E4 (Case 2)
The speed sensor power supply voltage drops below 6.1 V for 0.2 seconds or more |
Met | COMPONENT OPERATING RANGE C0502, C0503, C0508 and C0509
Both of the following conditions are met |
- | Serial communication with low side IC |
Valid | Speed sensor voltage |
0.4 V or more, and 3.3 V or less | C14E1 and C14E4 (Case 1)
Both of the following conditions are met |
- | Serial communication with low side IC |
Valid | Speed sensor power supply voltage |
6.1 V or more | C14E1 and C14E4 (Case 2)
All of the following conditions are met |
- | Brake system voltage 1 (VM1) |
Higher than 7.54 V |
Serial communication with low side IC |
Valid | Command to speed sensor power supply |
On | Speed
sensor fail (C0502, C0503, C0508, C0509, C050E, C050F, C0514, C0515,
C14E1 (Case 1), C14E4 (Case 1), C14E7 (Case 1), C14EA (Case 1)) |
Not detected | The speed sensor power supply voltage drops below 6.1 V for 0.2 seconds or more |
Not met | CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Wait 60 seconds.
- Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.
- Read the DTCs.
HINT:
- If a DTC is output, the system is malfunctioning.
- If a DTC is not output, perform the following procedure.
- If the DTCs are not output, perform a universal trip and check for permanent DTCs.
Click here
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTCs are output, the system is normal.
WIRING DIAGRAM Refer to DTCs C1413 and C1414.
Click here 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
(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 C1405 is output. |
A | DTC C1406 is output. |
B |
B |
| GO TO STEP 7 |
A |
| |
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 |
FR Speed Open | Front speed sensor RH open detection |
Error or Normal | Error: Momentary interruption
Normal: Normal | - | Chassis > ABS/VSC/TRAC > Data List
Tester Display | FR Speed 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 |
OK |
| |
3. |
READ VALUE USING TECHSTREAM (FRONT 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 |
FR Wheel Speed | Front 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 | Chassis > ABS/VSC/TRAC > Data List
Tester Display | FR Wheel Speed |
(b) Check the front speed sensor RH output value. OK: The output value changes in accordance with the vehicle speed.
NG |
| GO TO STEP 5 |
OK |
| |
(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 C1405 is not output. |
A | DTC C1405 is output. |
B |
A |
| USE SIMULATION METHOD TO CHECK |
B |
| REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
5. |
CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR RH) |
(a) Turn the power switch off. (b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK: The connector is securely connected. (c) Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
(d) Disconnect the A59 front speed sensor RH connector. (e) Check both the connector case and the terminals for deformation and corrosion.
OK: No deformation or corrosion. (f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
A35-3 (FR+) - A59-1 (FR+) |
Always | Below 1 Ω |
A35-3 (FR+) or A59-1 (FR+) - Body ground |
Always | 10 kΩ or higher |
A35-4 (FR-) - A59-2 (FR-) |
Always | Below 1 Ω |
A35-4 (FR-) or A59-2 (FR-) - Body ground |
Always | 10 kΩ or higher |
NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
| |
6. |
INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) |
(a) Reconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector. |
|
*a | Front view of wire harness connector
(to Front Speed Sensor RH) | | |
(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 |
A59-1 (FR+) - Body ground |
Power switch on (IG) |
8 to 14 V | NOTICE: Check the front speed sensor RH signal after replacement.
Click here
OK |
| REPLACE FRONT SPEED SENSOR RH |
NG |
| REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
7. |
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 |
FL Speed Open | Front speed sensor LH open detection |
Error or Normal | Error: Momentary interruption
Normal: Normal | - | Chassis > ABS/VSC/TRAC > Data List
Tester Display | FL Speed 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 10 |
OK |
| |
8. |
READ VALUE USING TECHSTREAM (FRONT 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 |
FL Wheel Speed | Front 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 | Chassis > ABS/VSC/TRAC > Data List
Tester Display | FL Wheel Speed |
(b) Check the front speed sensor LH output value. OK: The output value changes in accordance with the vehicle speed.
NG |
| GO TO STEP 10 |
OK |
| |
(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 C1406 is not output. |
A | DTC C1406 is output. |
B |
A |
| USE SIMULATION METHOD TO CHECK |
B |
| REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
10. |
CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - FRONT SPEED SENSOR LH) |
(a) Turn the power switch off. (b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK: The connector is securely connected. (c) Disconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector.
(d) Disconnect the A61 front speed sensor LH connector. (e) Check both the connector case and the terminals for deformation and corrosion.
OK: No deformation or corrosion. (f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
A35-31 (FL+) - A61-1 (FL+) |
Always | Below 1 Ω |
A35-31 (FL+) or A61-1 (FL+) - Body ground |
Always | 10 kΩ or higher |
A35-32 (FL-) - A61-2 (FL-) |
Always | Below 1 Ω |
A35-32 (FL-) or A61-2 (FL-) - Body ground |
Always | 10 kΩ or higher |
NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
| |
11. |
INSPECT BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SENSOR OUTPUT) |
(a) Reconnect the A35 skid control ECU (brake booster with master cylinder assembly) connector. |
|
*a | Front view of wire harness connector
(to Front Speed Sensor LH) | | |
(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 |
A61-1 (FL+) - Body ground |
Power switch on (IG) |
8 to 14 V | NOTICE: Check the front speed sensor LH signal after replacement.
Click here
OK |
| REPLACE FRONT SPEED SENSOR LH |
NG |
| REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY | |