ABS-314
K. ABS-313, ABS-314 wheel sensor signalABS-313 Wheel sensor signal LH rear wheel, circuit fault
ABS-314 Wheel sensor signal RH rear wheel, circuit fault
KA. DTC information
Condition
If the control module registers that the signal from the wheel signal is absent and there is a break or short circuit in the circuit, then post DTC ABS-313 or ABS-314 depending on the wheel sensor
Substitute value
- ABS/TRACS-system is disconnected.
- EBD-system is available.
Possible source
- Break in the signal cable (+) or signal cable (-)
- Signal cable (+) or signal cable (-) short circuited to ground or power.
- Signal leads short circuited to each other.
- Defective wheel sensor
- Contact resistance in the connections
Fault symptom(s)
- When the ABS system is disconnected, there is a risk of the wheels locking when braking.
- In vehicles with TRACS, the anti-wheel spin system cuts out.
- If there is a fault in both front wheel sensors at the same time, the speed will not be indicated on the instrument panel.
Caution! If the fault is intermittent, the ABS warning light will only go out when the speed exceeds 20 km/h (12.5 mph) in the next drive cycle.
KB. OtherDTCsS, status, notifications end status checks
[KB1]
Other DTCs
- Note other DTCs
Select one of the above alternatives to continue
Alternative 1: KB2
Alternative 2: KB3
[KB2]
Status notification
Select one of the following alternatives to continue
Alternative 1: Fault-trace as per KC. Circuit fault. Permanent fault.
Alternative 2: Fault-trace as per KD. Circuit fault. Intermittent fault.
[KB3]
Status check
- Raise the vehicle so that the wheel is off the ground
- Ignition on
- Go into running values, list 1
Note the speed of the wheel in question.
Spin the wheel round and check that the speed is updated when the wheel spins.
Is the speed of the wheel in question updated when it spins round ?
Yes: Fault-trace as per KD. Circuit fault. Intermittent fault.
No: Fault-trace as per KC. Circuit fault. Permanent fault.
KC. Circuit fault. Permanent fault
[KC1]
Connect the test box and check the control points
Connect the test box as per JJJA. Connect the test box Connect the Test Box [JJJ]
Then proceed to: KC2
[KC2]
Check the resistance in the wheel sensor circuit
- Ignition off.
- Control module disconnected.
Connect an ohmmeter between test box:
#2 and #10 (DTC ABS-313)
#1 and #17 (DTC ABS~314)
The ohmmeter should indicate 1040-1160 ohms
If reading is OK: KC15
If reading is incorrect: KC3
[KC3]
Check the resistance in the wheel sensor
- Ignition off.
- Clean carefully around the wheel sensor connector. Brush and blow clean.
- Disconnect the wheel sensor.
Connect an ohmmeter between wheel sensor connector 24/19 connection:
1 and 3 (DTC ABS-313 against the wheel sensor)
2 and 4 (DTC ABS-314 against the wheel sensor)
The ohmmeter should indicate 1040-1160 ohms.
If reading is OK: KC5
If reading is incorrect: KC4
[KC4]
Check for cable breaks, short circuiting and replace the component
Check the leads between the wheel sensor and connector 24/19 for breaks as per [IIIB2] and short circuiting to each other as per [IIIB3]. Check Communication to Control Module [III]
If the leads are OK test with a new wheel sensor as per LLLLA. Rear wheel sensor, with integrated cabling, replacement.
Sensors and Switches - Brakes and Traction Control - Wheel Speed Sensor - Service and Repair - Procedures Service and Repair
Then continue with: KC19
[KC5]
Check the resistance in signal cable (+)
- Ignition off.
- Wheel sensor disconnected.
- Control disconnected.
Connect an ohmmeter between wheel sensor connector 24/19 connection:
3 and #10 on the test box (DTC ABS-313)
4 and #17 on the test box (DTC ABS-314)
The ohmmeter should indicate approx. 0 ohms.
If reading Is OK: KC9
If reading is incorrect: KC6
[KC6]
Check the signal cable (+) connector
- Ignition off
- Wheel sensor disconnected.
- Control module disconnected.
- Take appropriate action to wheel sensor connectors 24/19 24/4B and 24/2B for defective contact as per and contact resistance and oxidation as per [IIIB5]. Check Communication to Control Module [III]
Connect an ohmmeter between wheel sensor connector 24/19 connection:
3 and #10 on test box (DTC ABS-313)
4 and #17 on test box (DTC ABS-314)
The ohmmeter should indicate approx. 0 ohms
If reading is OK: KC7
If reading Is Incorrect: KC8
[KC7]
Fault cause
The fault has been caused by poor contact in the wheel sensor connector.
Then continue with: KC19
[KC8]
Check for cable breaks
Check the cable between connector 24/19 connection:
3 and control module #10 (DTC ABS-313)
4 and control module #17 (DTC ABS-314)
for breaks as per [IIIB2]. Check Communication to Control Module [III]
If reading is incorrect:
Then continue with: KC19
[KC9]
Check the resistance in the signal cable (-)
- Ignition off.
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between wheel sensor connector 24/19 connection.
1 and #2 on test box (DTC ABS-313)
2 and #1 on test box (DTC ABS-314)
The ohmmeter should indicate approx. 0 ohms
If reading is OK: KC12
If reading is Incorrect: KC10
[KC10]
Check the signal cable (-) connector
- Ignition off
- Wheel sensor disconnected.
- Control module disconnected
- Take appropriate action to wheel sensor connector 24/19, 24/4B and 24/2B for defective contact as per and contact resistance and oxidation as per [IIIB5]. Check Communication to Control Module [III]
Connect an ohmmeter between wheel sensor connector 24/19 connection:
1 and #2 on test box (DTC ABS-313)
2 and #1 on test box (DTC ABS-314)
The ohmmeter should indicate approx. 0 ohms
If reading is OK: KC7
If reading is incorrect: KC11
[KC11]
Check for cable breaks
Check the cable between wheel sensor connector 24/19 connection:
1 and control module #2 (DTC ABS-313)
2 and control module #1 (DTC ABS-314)
for breaks as per [IIIB2]. Check Communication to Control Module [III]
Then continue with: KC19
[KC12]
Check signal cable (+) resistance to signal cable (-)
- Ignition off.
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between test box:
#2 and #10 (DTC ABS-313).
#1 and #17 (DTC ABS-314).
The ohmmeter should indicate approx. 0 ohms.
If reading is OK: KC13
If reading is incorrect: KC14
[KC13]
Check for contact resistance and oxidation
The cause of the DTC has been poor contact in the wheel sensor connector.
Take appropriate action to wheel sensor connector 24/19, 24/4B and 24/2B for contact resistance and oxidation as per [IIIB5]. Check Communication to Control Module [III]
Then continue with: KC19
[KC14]
Check for short circuiting
Check the leads between the wheel sensor and the control module for short circuiting to each other as per [IIIB3]. Check Communication to Control Module [III]
Then continue with: KC19
[KC15]
Check the signal leads
- Ignition off.
- Connect the control module.
- Ignition on.
Connect a voltmeter between test box:
#8 and #10 (DTC ABS-313).
#8 and #17 (DTC ABS-314).
The voltmeter should indicate approx. 2.3 V.
If reading is OK: KC16
If value is lower: KC17
If value is higher: KC18
[KC16]
Check for contact resistance and oxidation
The fault has been caused by poor contact in the control module connector.
Take appropriate action for contact resistance and oxidation in the control module connector as per [IIIB5]. Check Communication to Control Module [III]
Then continue with: KC19
[KC17]
Check for short circuiting
Check the cable between wheel sensor connector 24/19 connection:
1 and control module #2 (DTC ABS-313)
3 and control module #10 (DTC ABS-313)
2 and control module #1 (DTC ABS-314)
4 and control module #17 (DTC ABS-314)
for short-circuiting to ground as per [IIIB3]. Check Communication to Control Module [III]
Then continue with: KC19
[KC18]
Check for short circuiting
Check the cable between wheel sensor connector 24/19 connection:
1 and control module #2 (DTC ABS-313)
3 and control module #10 (DTC ABS-313)
2 and control module #1 (DTC ABS-314)
4 and control module #17 (DTC ABS-314)
for short-circuiting to power as per [IIIB4]. Check Communication to Control Module [III]
Then continue with: KC19
[KC19]
Verification
Hint: After repair it is necessary to check that the fault has been rectified
- Ignition off
- Reconnect the connections, components etc.
- Raise the vehicle so that the wheel is off the ground.
- Ignition on
- Go into running values, list 1.
Note the speed of the wheel in question.
Spin the wheel round and check that the speed is updated when the wheel spins.
Is the speed of the wheel in question updated when it spins round?
Yes: Fault corrected
No: KC20
[KC20]
Fault-tracing information
The verification result shows that the fault persists.
Do you want to exit fault-tracing?
Yes: Fault not corrected
No: KC1
KD. Circuit fault. Intermittent fault
[KD1]
Check the leads and connections
Check wheel sensor connectors 24/19, 24/4B and 24/2B and the control module connector for contact resistance and oxidation as per [IIIB6]. Check Communication to Control Module [III]
Check the cable between the wheel sensor and control module:
#2 and #10 (DTC ABS-313)
#1 and #17 (DTC ABS-314)
for intermittent breaks as per [IIIB2], intermittent short circuiting to ground as per [IIIB3] and intermittent short circuiting to power as per [IIIB4]. Check Communication to Control Module [III]
Then continue with: KD2
[KD2]
Test driving
- Ignition on
- Note the DTC and the status
- Disconnect Volvo System Tester so that the diagnosis is aborted.
Warning! The ABS and EBD systems are not available while Volvo Diagnostics is activated. Take great care when test driving as there is a serious risk of the wheels locking when braking.
- Test drive the vehicle as per SA. Test driving. Test Driving [SA] Brake so that the wheel sensor is warmed up.
- Stop the vehicle note the DTC status
Is the status intermittent ?
Yes: KD3
No: KD4
[KD3]
Status is intermittent
System is OK.
Then continue with: Fault corrected
[KD4]
Replace the component
Test with a new wheel sensor as per LLLLA. Rear wheel sensor, with integrated cabling, replacement.
Sensors and Switches - Brakes and Traction Control - Wheel Speed Sensor - Service and Repair - Procedures Service and Repair
Then continue with: KD5
[KD5]
Fault-tracing information
For intermittent faults fault-tracing is not followed by a verification because the fault is not present at this moment.
Do you want to repeat fault-tracing?
Yes: KD1
No: Operation done