Fault In Circuit
Fault in circuit
Other diagnostic trouble codes (DTCs)
Read off other diagnostic trouble codes (DTCs).
Hint: To guarantee the correct diagnostic trouble code (DTC) status, if any of the following DTCs are stored, the DTC status must be established by a status check.
Are diagnostic trouble codes (DTCs) ABS-21X as well as ABS-22X or ABS-32X (for the same wheel) stored?
Yes - Status check
No - Circuit fault.Permanent fault Circuit Fault. Permanent Fault
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Status check
- Jack car up so the relevant wheel is clear of ground.
- Ignition on.
Read off the speed of the wheel.
Rotate the wheel and check that the speed is updated as the wheel turns.
Is the speed of the wheel updated as it turns?
OK - Fault-trace according to Fault in circuit. Intermittent fault Fault In Circuit. Intermittent Fault.
Not OK - Fault-trace according to Fault in circuit. Permanent fault Fault In Circuit. Permanent Fault.
OK - INT
Not OK - PER
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PER
Circuit fault.Permanent fault
connect the test box and check the contact points
Connecting the breakout box
Connecting the breakout box
- Ignition off.
- Disconnect the ABS control module by pressing in the catch on the rear edge of the cover (wheel arch side). Carefully turn the cover upwards so that the locking catches release.
- Check control module and control module connector to ensure that: Male and female terminals are undamaged and properly attached (cannot be pressed in). Female terminal cables are correctly connected to the terminals.
- Pay particular attention to the terminals related to the diagnostic trouble code (DTC)/symptom.
- Connect adapter 951 1354 Adapter 25-pin ABS 850 951 1354 Adapter 25-Pin ABS 850 to the control module connector (wiring side) and connect breakout box 951 1428 Breakout box 951 1428 Breakout Box to the adapter.
- Control module disconnected.
- Then check ground terminals.
Continue - Checking ground terminals
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Checking ground terminals
- Ignition off.
- Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
- Connect an ohmmeter between battery negative terminal and #8 and #24 on the breakout box.
The ohmmeter should read approximately 0 ohms for all readings.
OK - Return to the fault-tracing procedure where it was interrupted.
Reading is OK
Not OK - Check ground terminal 1/1 (battery negative terminal) and cable between ground terminal and control module #8 and #24, for an open-circuit and contact resistance.-Return to the fault-tracing procedure where it was interrupted.
Value is not OK
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Reading is OK
- Return to the fault-tracing procedure where it was interrupted.
Continue - FAULT FOUND
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Value is not OK
- Check ground terminal 1/1 (battery negative terminal) and cable between ground terminal and control module #8 and #24, for an open-circuit and contact resistance.
- Return to the fault-tracing procedure where it was interrupted.
Continue - FAULT FOUND
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FAULT FOUND - Check the resistance in the wheel sensor circuit
FAULT-TRACING FAILED - Check the resistance in the wheel sensor circuit
No Fault Found - Check the resistance in the wheel sensor circuit
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Check the resistance in the wheel sensor circuit
- Ignition off.
- Control module disconnected.
Connect an ohmmeter between test box:
- #4 and #11 (DTC ABS-311).
- #3 and #18 (DTC ABS-312).
The ohmmeter should indicate 1040-1160 ohms.
OK - Check the signal leads
Not OK - Check the resistance in the wheel sensor
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Check the resistance in the wheel sensor
- Ignition off
- Remove the wheels for better access
- Clean carefully around the wheel sensor connector Brush and blow clean
- Disconnect the wheel sensor
Connect an ohmmeter between wheel sensor connector connection:
The ohmmeter should indicate 1040-1160 ohms.
OK - Check the resistance in the signal cable (+)
Not OK - Replace the component
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Replace the component
Test with a new wheel sensor as per Front wheel sensor, replacement Front Wheel Sensor, Replacement.
Select Continue when the component has been replaced
Continue - Verification
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Check the resistance in the signal cable (+)
- Ignition of
- Wheel sensor disconnected
- Control module disconnected
Connect an ohmmeter between wheel sensor connector connection;
- 2 and #4 on the test box (DTC ABS-311)
- 2 and #3 on the test box (DTC ABS-312)
The ohmmeter should indicate approx.0 ohms.
OK - Check the resistance in the signal cable (-)
Not OK - Check for cable breaks
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Check for cable breaks
Check the cable between wheel sensor connector connection:
- 2 and control module #4 (DTC ABS-311)
- 2 and control module #3 (DTC ABS-312)
for breaks as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired
Continue - Verification
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Check the resistance in the signal cable (-)
- Ignition off.
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between wheel sensor connector connection:
- 1 and #11 on test box (DTC ABS-311)
- 1 and #18 on test box (DTC ABS-312)
The ohmmeter should indicate approx. 0 ohms.
OK - Check signal cable (+) resistance to signal cable (-)
Not OK - Check for cable breaks
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Check for cable breaks
Check the cable between wheel sensor connector connection:
- 1 and control module #11 (DTC ABS-311)
- 1 and control module #18 (DTC ABS-312)
for breaks as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select continue when the fault has been repaired
Continue - Verification
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Check signal cable (+) resistance to signal cable (-)
- Ignition off
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between test box:
- #4 and #11 (DTC ABS-311).
- #3 and #18 (DTC ABS-312).
The ohmmeter should indicate approx.0 ohms.
OK - Check for contact resistance and oxidation
Not OK - Check for short-circuiting
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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 connector as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired.
Continue - Verification
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Check for short-circuiting
Check the leads between the wheel sensor and the control module for short-circuiting to each other as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired.
Continue - Verification
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Check the signal leads
- Ignition off
- Connect the control module
- Ignition on
Connect a voltmeter between test box:
- #8 and #4 (DTC ABS-311).
- #8 and #3 (DTC ABS-312).
The voltmeter should indicate approx. 2,3 V.
OK - check for contact resistance and oxidation
Low - Check for short-circuiting
High - Check for short-circuiting
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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 Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired.
Continue - Verification
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Check for short-circuiting
Check the cable between wheel sensor connector connection:
- 2 and control module #4 (DTC ABS-311)
- 1 and control module #11 (DTC ABS-311)
- 2 and control module #3 (DTC ABS-312)
- 1 and control module #18 (DTC ABS-312)
for short-circuiting to ground as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired
Continue - Verification
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Check for short-circuiting
Check the cable between wheel sensor connector connection:
- 2 and control module #4 (DTC ABS-311)
- 1 and control module #11 (DTC ABS-311)
- 2 and control module #3 (DTC ABS-312)
- 1 and control module #18 (DTC ABS-312)
for short-circuiting to power as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select Continue when the fault has been repaired
Continue - Verification
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Verification
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 - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - connect the test box and check the contact points
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No Fault Found - No Fault Found
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INT
Circuit fault.Intermittent fault
Check the leads and connections
Check the wheel sensor and control module connectors for contact resistance and oxidation as per Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the cable between wheel sensor connector connections:
- 2 and control module #4 (DTC ABS-311)
- 1 and control module #11 (DTC ABS-311)
- 2 and control module #3 (DTC ABS-312)
- 1 and control module #18 (DTC ABS-312)
for intermittent breaks as per Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , intermittent short-circuiting to ground as per Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and intermittent short-circuiting to power as per Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Select Continue when the fault has been repaired.
Continue - Test driving
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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 Test driving Test Driving. Brake so that the wheel sensors are warmed up
- Stop the vehicle.
Note the DTC status
Is the status intermittent ?
Yes - The status is intermittent
No - Replace the component
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The status is intermittent
The system is OK.
Continue - FAULT FOUND
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Replace the component
Test with a new wheel sensor as per Front wheel sensor, replacement Front Wheel Sensor, Replacement.
Select Continue when the component has been replaced.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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Attempt New Test - Check the leads and connections
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No Fault Found - No Fault Found
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