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Home >> Volvo >> 2000 >> C70 Convertible L5-2.3L Turbo VIN 53 B5234T3 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> ABS Codes (Antilock Brake System Control Module) >> ABS-312

ABS-312






Circuit fault.Permanent fault

connect the test box and check the contact points
Connecting the breakout box

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
Attempt New Test - connect the test box and check the contact points

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