ABS-224
I. ABS-223, ABS-224 HjulsensorsignalABS-223 Wheel sensor signal LH rear wheel, ABS control phase too long
ABS-224 Wheel sensor signal RH rear wheel, ABS control phase too long
IA. DTC information
Condition
When the control module via the wheel sensor registers that the wheel stops or rotates too slowly in relation to the vehicle reference speed when driving or ABS regulation when the speed is above 20 km/h (12.5 mph), the control module activates the inlet and outlet valves so that the wheel increases in speed. If the wheel speed has not increased after 28 seconds and the wheel sensor circuit is unbroken, DTC ABS-223 or ABS-224 depending on the wheel sensor will be posted.
Substitute value
- ABS/TRACS-systems are blocked.
- EBD-system is available.
Possible source
- Loose wheel sensor.
- Defective wheel sensor.
- Defective pulse wheel.
- Wheel locked when driving.
- Defective hydraulic modulator
Fault symptom(s)
- There is a risk of the wheels locking when braking if the ABS system is blocked.
- In vehicles with TRACS, the anti-wheelslip system cuts out.
Caution! If the fault is intermittent, the ABS warning light will go out first when the speed goes above 20 km/h (12.5 mph) in the next driving cycle.
IB. Other DTCs, status notifications and status checks
[IB1]
Status notification
Is a permanent fault posted ?
Yes: IB2
No: Fault-trace as per HD. ABS control phase too long. Intermittent fault. ABS-221
[IB2]
Other DTCs
Select one of the following alternatives to continue
Alternative 1: Fault-trace as per IC. ABS control phase too long. Permanent fault.
Alternative 2: IB4
[IB3]
Status check
- Ignition on
- Go into running value, list 1
- Note the wheel speeds
- Test drive the vehicle. Maintain a constant speed without turning
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.
Check that the wheel in question has the same speed as the other wheels
Does the wheel in question have the same speed as the other wheels ?
Yes: Fault-trace as per HD. ABS control phase too long. Intermittent fault. ABS-221
No: Fault-trace as per IC. ABS control phase too long. Permanent fault.
[IB4]
ABS-223 or ABS-224, and ABS-313 or ABS-314 (for the same wheel)
Fault-trace as per KC. Circuit fault. Permanent fault. ABS-313
Then continue with: IB3
IC. ABS control phase too long. Permanent fault.
[IC1]
Connect the test box and check the control points
Connect test box as per JJJA. Connect the test box Connect the Test Box [JJJ]
Then proceed to: IC2
[IC2]
Check the resistance in the wheel sensor circuit
- Ignition off
- Control module disconnected
Connect an ohmmeter between test box:
#2 and #10 (DTC ABS-223).
#1 and #17 (DTC ABS-224).
The ohmmeter should indicate 1040-1160 ohms
If reading is OK: IC6
If reading is incorrect: IC3
[IC3]
Check the resistance in the wheel sensor
- Ignition off
- Clean 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-223).
2 and 4 (DTC ABS-224).
The ohmmeter should indicate 1040-1160 ohms
If reading is OK: IC4
If reading is incorrect: IC5
[IC4]
Check for contact resistance and oxidation
- The fault has been caused by poor contact in the wheel sensor connector
Take appropriate action for contact resistance and oxidation in the wheel sensor connectors 24/19, 24/4B and 24/2B as per [IIIB5]. Check Communication to Control Module [III]
°Then continue with: IC18
[IC5]
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] Check Communication to Control Module [III] and short circuiting to each other as per xx.
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: IC18
[IC6]
Check the signal leads
- Ignition off
- Connect the control module
- Ignition on
Connect a voltmeter between test box:
#8 and #10 (DTC ABS-223).
#8 and #17 (DTC ABS~24).
The voltmeter should indicate approx 2.3 V.
If reading is OK: IC9
If value is higher: IC8
If value is lower: IC7
[IC7]
Check for short circuiting
Check the wheel sensor for short circuiting to ground as per [IIIB3]. Check Communication to Control Module [III]
Check the cable between connector 24/19 connection:
1 and control module #2 (DTC ABS-223)
3 and control module #10 (DTC ABS-223)
2 and control module #1 (DTC ABS-224)
4 and control module #17 (DTC ABS-224)
for short circuiting to ground as per [IIIB3]. Check Communication to Control Module [III]
Then continue with: IC18
[IC8]
Check for short circuiting
Check the cable between connector 24/19 connection:
1 and control module #2 (DTC ABS-223)
3 and control module #1O(DTC ABS-223)
2 and control module #1 (DTC ABS-224)
4 and control module #17(DTC ABS-224)
for short circuiting to power as per [IIIB4]. Check Communication to Control Module [III]
Then continue with: IC18
[IC9]
Check the wheel bearing
Check that the wheel bearing of the wheel in question is not jammed.
Is the wheel bearing OK?
If reading is OK: IC11
If reading is incorrect: IC10
[IC10]
Action
Take appropriate action as needed. The rear wheel bearings are adjusted.
Then continue with: IC18
[IC11]
Check the brakes
Hint: A jammed brake can lock one or both wheels when driving. This means that there will be no wheel sensor signal
Check that the brake caliper does not jam so that the wheel is locked
Check that the parking brake lever, cable and brake shoes do not jam in any way.
Check that the brake shoes and cable are correctly adjusted,
Are the brakes OK?
If reading is OK: IC13
If reading is incorrect: IC12
[IC12]
Action
Take appropriate action as needed
Then continue with: IC18
[IC13]
Check the wheel sensor
- Ignition off
Note! Do not disconnect the wheel sensor
Check that the wheel sensor is fitted against the spindle/hub. There should be no dirt between the wheel sensor and the contact surfaces
- Remove the 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
- Check that the wheel sensor point is undamaged.
Is the wheel sensor OK?
If reading Is OK: IC15
If reading is incorrect: IC14
[IC14]
Take appropriate action or replace the component
Replace a damaged wheel sensor as per LLLA. Rear wheel sensor, with integrated cabling, replacement.
Refit a loose 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: IC18
[IC15]
Check the pulse wheel
- Remove the wheel, brake caliper and brake disc as per xx. for better access
Check that the pulse wheel is fitted securely, is undamaged (all the teeth in place), free from scratches etc.
Is the pulse wheel OK ?
If reading is OK: IC17
If reading is incorrect: IC16
[IC16]
Action
Take appropriate action as needed
Then continue with: IC18
[IC17]
Check for contact resistance and oxidation
- The fault has been caused by poor contact in the wheel sensor or control module connectors. Take appropriate action for contact resistance and oxidation in the wheel sensor and control module connectors as per [IIIB5]. Check Communication to Control Module [III]
Then continue with: IC18
[IC18]
Verification
Hint: After repair it is necessary to check that the fault has been rectified
- Ignition off
- Reconnect the connections, components etc.
- Ignition on
- Go into running value, list 1
- Test drive the vehicle as per SA. Test driving. Test Driving [SA] Maintain a constant speed without turning
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.
Note the wheel speeds
Does the wheel in question have the same speed as the other wheels ?
Yes: Fault corrected
No: IC19
[IC19]
Fault-tracing information
The verification result shows that the fault persists.
Do you want to exit fault-tracing?
Yes: Fault not corrected
No: IC1
ID.ABS control phase too long. Intermittent fault
[ID1]
Check for a locked wheel
A locked wheel when driving can mean that there is no wheel sensor signal which can trigger a DTC.
The wheel can be temporarily locked by a jammed wheel bearing, brake caliper or parking brake.
Driving with the parking brake on can cause a DTC.
Then continue with: ID2
[ID2]
Check the wheel sensor and pulse wheel
Check that the wheel sensor is fitted securely against the spindle/hub
For the front wheels
Check that the pulse wheel is fitted securely to the hub as per [IC15]
Then continue with: ID3
[ID3]
Check the leads and connections
For the front wheels
Check the wheel sensor and control module connectors for contact resistance and oxidation as per [IIIB6]. Check Communication to Control Module [III]
Check the leads between wheel sensor connector connection:
1 and #11 (DTC ABS-221)
2 and #4 (DTC ABS-221)
1 and #18 (DTC ABS-222)
2 and #3 (DTC ABS-222)
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]
For the rear wheels
Check wheel sensor connections 24/19, 24/4B and 24/2B for contact resistance and oxidation as per [IIIB6]. Check Communication to Control Module [III]
Check the leads between wheel sensor connector connections:
#2 and #10 (DTC ABS-223)
#1 and #17 (DTC ABS-224)
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: ID4
[ID4]
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: ID1
No: Operation done