DTC Troubleshooting: C0031-14, C0034-14, C0037-14, C003A-14
DTC C0031-14: Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
DTC C0034-14: Right Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
DTC C0037-14: Left Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
DTC C003A-14: Right Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
C0031-14 Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0034-14 Right Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0037-14 Left Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C003A-14 Right Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Test-drive the vehicle on the road in a straight line at 19 mph (30km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C0031-14 Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0034-14 Right Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0037-14 Left Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C003A-14 Right Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    

Is DTC C0031-14, C0034-14, C0037-14, or C003A-14 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.?
2.
Shorted wire check (SNSR+, SNSR- lines to ground):

Shorted wire check (SNSR+, SNSR- lines to ground)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
VSA modulator-control unit 46P connector

?3.
Check for continuity between body ground and the appropriate wheel speed sensor terminals of the VSA modulator-control unit 46P connector individually (see table).
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected

DTC
VSA modulator-control unit 46P connector
SNSR+
SNSR-
C0031-14
Left-front
No. 44
No. 43
C0034-14
Right-front
No. 40
No. 39
C0037-14
Left-rear
No. 42
No. 41
C003A-14
Right-rear
No. 46
No. 45

Is there continuity?

     
YES
     
     
     
The SNSR+ or SNSR- wires are shorted to body ground. Go to step 3.
     
NO
     
     
     
The SNSR+ and SNSR- wires are not shorted to body ground. Go to step 4.
3.
Wheel speed sensor(s) check:

Wheel speed sensor(s) check
?1.
Disconnect the following connectors.
Appropriate wheel speed sensor 2P connector (front)
Appropriate wheel speed sensor 4P connector (rear)

?2.
On the sensor side, check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected
 
Appropriate wheel speed sensor 2P connector (front): disconnected
 
Appropriate wheel speed sensor 4P connector (rear): disconnected
Test point 1
Appropriate wheel speed sensor 2P connector No. 1
 
Appropriate wheel speed sensor 4P connector No. 3
Test point 2
Body ground

Test point 1
Appropriate wheel speed sensor 2P connector No. 2
 
Appropriate wheel speed sensor 4P connector No. 4
Test point 2
Body ground
Front

Rear


Is there continuity?

     
YES
     
     
     
The SNSR+ and SNSR- wires are not shorted to body ground. Replace the appropriate wheel speed sensor.?
     
NO
     
     
     
Repair a short to body ground in the wire between the VSA modulator-control unit and the wheel speed sensor.?
4.
Shorted wire check (SNSR+, SNSR- lines to power):

Shorted wire check (SNSR+, SNSR- lines to power)
?1.
Turn the vehicle to the ON mode.

?2.
Measure the voltage between body ground and the appropriate wheel speed sensor terminals of the VSA modulator-control unit 46P connector individually (see table).
Test condition
Vehicle ON mode
 
VSA modulator-control unit 46P connector: disconnected

DTC
VSA modulator-control unit 46P connector
SNSR+
SNSR-
C0031-14
Left-front
No. 44
No. 43
C0034-14
Right-front
No. 40
No. 39
C0037-14
Left-rear
No. 42
No. 41
C003A-14
Right-rear
No. 46
No. 45

Is there 0.1 V or more?

     
YES
     
     
     
The SNSR+ or SNSR- wires are shorted to power. Go to step 5.
     
NO
     
     
     
The SNSR+ and SNSR- wires are not shorted to power. Go to step 6.
5.
Wheel speed sensor(s) check:

Wheel speed sensor(s) check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Appropriate wheel speed sensor 2P connector (front)
Appropriate wheel speed sensor 4P connector (rear)

?3.
Turn the vehicle to the ON mode.

?4.
On the sensor side, measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
VSA modulator-control unit 46P connector: disconnected
 
Appropriate wheel speed sensor 2P connector (front): disconnected
 
Appropriate wheel speed sensor 4P connector (rear): disconnected
Test point 1
Appropriate wheel speed sensor 2P connector No. 1
 
Appropriate wheel speed sensor 4P connector No. 3
Test point 2
Body ground

Test point 1
Appropriate wheel speed sensor 2P connector No. 2
 
Appropriate wheel speed sensor 4P connector No. 4
Test point 2
Body ground
Front

Rear


Is there 0.1 V or more?

     
YES
     
     
     
The SNSR+ and SNSR- wires are not shorted to power. Replace the appropriate wheel speed sensor.?
     
NO
     
     
     
Repair a short to power in the wire between the VSA modulator-control unit and the appropriate wheel speed sensor.?
6.
Shorted wire check (SNSR+, SNSR- lines wire to wire):

Shorted wire check (SNSR+, SNSR- lines wire to wire)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Appropriate wheel speed sensor 2P connector (front)
Appropriate wheel speed sensor 4P connector (rear)

?3.
Check for continuity between the appropriate VSA modulator-control unit 46P connector wheel speed sensor terminals (see table).
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected
 
Appropriate wheel speed sensor 2P connector (front): disconnected
 
Appropriate wheel speed sensor 4P connector (rear): disconnected

DTC
VSA modulator-control unit 46P connector
SNSR+
SNSR-
C0031-14
Left-front
No. 44
No. 43
C0034-14
Right-front
No. 40
No. 39
C0037-14
Left-rear
No. 42
No. 41
C003A-14
Right-rear
No. 46
No. 45

Is there continuity?

     
YES
     
     
     
Repair a short in the wires between the appropriate wheel speed sensor and the VSA modulator-control unit.?
     
NO
     
     
     
The SNSR+, SNSR- wires are not shorted in the wires. Go to step 7.
7.
Open wire check (SNSR+ lines):

Open wire check (SNSR+ lines)
?1.
Check for continuity between the appropriate VSA modulator-control unit 46P connector terminal and the appropriate wheel speed sensor 2P connector terminal (front) or appropriate wheel speed sensor 4P connector terminal (rear) (see table).
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected
 
Appropriate wheel speed sensor 2P connector (front): disconnected
 
Appropriate wheel speed sensor 4P connector (rear): disconnected

DTC
VSA Modulator-Control Unit 46P Connector Terminal
Appropriate Wheel Speed Sensor Connector Terminal
C0031-14
No. 44
Left-front wheel speed sensor 2P connector No. 1
C0034-14
No. 40
Right-front wheel speed sensor 2P connector No. 1
C0037-14
No. 42
Left-rear wheel speed sensor 4P connector No. 3
C003A-14
No. 46
Right-rear wheel speed sensor 4P connector No. 3
Front

Rear


Is there continuity?

     
YES
     
     
     
Go to step 8.
     
NO
     
     
     
Repair an open in the wire between the appropriate wheel speed sensor and the VSA modulator-control unit.?
8.
Open wire check (SNSR- lines):

Open wire check (SNSR- lines)
?1.
Check for continuity between the appropriate VSA modulator-control unit 46P connector terminal and the appropriate wheel speed sensor 2P connector terminal (front) or appropriate wheel speed sensor 4P connector terminal (rear) (see table).
Test condition
Vehicle OFF (LOCK) mode
 
VSA modulator-control unit 46P connector: disconnected
 
Appropriate wheel speed sensor 2P connector (front): disconnected
 
Appropriate wheel speed sensor 4P connector (rear): disconnected

DTC
VSA Modulator-Control Unit 46P Connector Terminal
Appropriate Wheel Speed Sensor Connector Terminal
C0031-14
No. 43
Left-front wheel speed sensor 2P connector No. 2
C0034-14
No. 39
Right-front wheel speed sensor 2P connector No. 2
C0037-14
No. 41
Left-rear wheel speed sensor 4P connector No. 4
C003A-14
No. 45
Right-rear wheel speed sensor 4P connector No. 4
Front

Rear


Is there continuity?

     
YES
     
     
     
The SNSR+, SNSR- wires are OK. Go to step 9.
     
NO
     
     
     
Repair an open in the wire between the appropriate wheel speed sensor and the VSA modulator-control unit.?
9.
Wheel speed sensor(s) check (substitution):

Wheel speed sensor(s) check (substitution)
?1.
Substitute a known-good wheel speed sensor.
DTC
Appropriate Wheel Speed Sensor
C0031-14
Left-front
C0034-14
Right-front
C0037-14
Left-rear
C003A-14
Right-rear

?2.
Reconnect the following connectors.
VSA modulator-control unit 46P connector
Appropriate wheel speed sensor 2P connector (front)
Appropriate wheel speed sensor 4P connector (rear)

?3.
Turn the vehicle to the ON mode.

?4.
Clear the DTC with the HDS.


?5.
Turn the vehicle to the OFF (LOCK) mode.

?6.
Test-drive the vehicle on the road in a straight line at 19 mph (30km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

?7.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C0031-14 Left Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0034-14 Right Front Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C0037-14 Left Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    
C003A-14 Right Rear Wheel Speed Sensor Circuit Failure (Circuit Short To Ground or Open)
    

Is DTC C0031-14, C0034-14, C0037-14, or C003A-14 indicated?

     
YES
     
     
     
Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit.?
     
NO