Fault In The Sensor Circuit. Permanent Fault
Fault in the sensor circuit. Permanent fault
Connecting the breakout box
Connecting the breakout box
951 1426 31-pin adapter 951 1426 31-Pin Adapter 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Connecting the breakout box to the ABS control module
Is the breakout box connected to the ABS control module?
Yes - FAULT FOUND
No - Connecting the breakout box
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Connecting the breakout box
- Ignition off.
- Disconnect the ABS control module.
- Check the control module and the control module connector to ensure that:
The male and female terminals are undamaged and properly attached (cannot be pressed in).
The wiring for the female terminals are securely connected.
Check in particular those terminals that are relevant to the stored diagnostic trouble code (DTC) / symptoms.
Connect adapter 951 1426 31-pin adapter 951 1426 31-Pin Adapter to the control module connector (wiring side). Connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to the adapter.
Note! ABS control module terminals 1-40 correspond to terminals 1-40 on the breakout box.
Select Continue.
Continue - Checking the ground terminal
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Checking the ground terminal
- Ignition off.
- Switch of all power consuming components, such as the passenger compartment lighting and the radio.
Connect an ohmmeter between terminal 16 on the breakout box and the battery negative terminal.
The ohmmeter should read approximately 0 ohms.
OK - No Fault FoundFault-tracing information
Not OK - Checking for an open-circuit and contact resistance
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Checking for an open-circuit and contact resistance
Check ground terminal 31/2. Check the cable between ground terminal 31/2 and control module terminal 16 for:
an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
contact resistance according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the ground lead between the battery and the bodywork for:
an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
contact resistance according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Select "Continue" when the fault has been remedied.
Continue - Verification
Verification
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Verification
Verification
Verification
Hint: Check after repair that the fault has been rectified.
Proceed as follows:
- Switch off the ignition.
- Switch off all power consuming components such as the courtesy lighting and the radio.
- Connect an ohmmeter between terminal 16 on the breakout box and the battery negative terminal.
The ohmmeter should read approximately 0ohms.
OK - VERIFIED
Not OK - 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 be diagnosed and remedied. Since this is not the case the fault-tracing process has failed.
Complete the fault-tracing for those fault or try again.
Do you want to terminate fault-tracing at this time?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Connecting the breakout box
FAULT-TRACING FAILED - FAULT-TRACING FAILED
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FAULT FOUND - Checking the alternating current
No Fault Found - Checking the alternating current
FAULT-TRACING FAILED - Checking the alternating current
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Checking the alternating current
- Ignition off.
- Raise the car so that the front wheels can rotate freely
Connect a voltmeter (in alternating current mode) or an oscilloscope between the terminals in the breakout box as follows:
terminals 6 and 7 (diagnostic trouble code (DTC) ABS-311), left front wheel
terminals 4 and 5 (diagnostic trouble code (DTC) ABS-312), right front wheel
terminals 8 and 9 (diagnostic trouble code (DTC) ABS-313), left rear wheel
terminals 1 and 3 (diagnostic trouble code (DTC) ABS-314), right rear wheel
Ignition on
Rotate the relevant wheel by hand.
Note! Check that one of the front wheels is locked when checking the front wheel sensor.
The voltmeter should read a variation in voltage of between 0-2 volts, depending on the speed of the wheel.
OK - Checking the control module connector
Not OK - Checking the direct voltage
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Checking the control module connector
- Ignition off
- Disconnect the breakout box.
- Expose and disconnect the connector from the ABS control module.
- Check the cable terminals in both the female and male halves of the control module connector.
Check the male and female halves of the connector. Check that they lock to each other when connected.
Check the connector cable terminals, female and male halves, 24/22 and 24/13.
Are the male and female halves OK?
Yes - Checking wheel bearings
No - Replacing the component
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Checking the direct voltage
- Ignition on.
Connect a voltmeter (direct voltage mode) between:
terminals 6 and 7 (diagnostic trouble code (DTC) ABS-311), left front wheel
terminals 4 and 5 (diagnostic trouble code (DTC) ABS-312), right front wheel
terminals 8 and 9 (diagnostic trouble code (DTC) ABS-313), left rear wheel
terminals 1 and 3 (diagnostic trouble code (DTC) ABS-314), right rear wheel
Rotate the relevant wheel.
- 1. The voltmeter reads 0V.
- 2. The voltmeter reads 5V.
- 3. The voltmeter reads 12V.
Select one of the above options.
1 - Repairing short-circuits
2 - Checking the resistance in the wheel sensor
3 - Repairing short-circuits
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Checking wheel bearings
Check the wheel bearing on the relevant wheel for play and sticking.
Is the wheel bearing OK?
Yes - Checking the brakes
No - Remedy the component
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Replacing the component
Check the cable. Repair or replace the cable terminal.
Continue - Verification
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Checking the brakes
- A sticking brake can block one or both wheels when the car is being driven. As a result, there is no signal from the wheel sensor.
Check that the brake calipers are not sticking and blocking the wheels.
Check that the parking brake lever, cables or brake calipers are not sticking.
Check that the parking brake brake shoes and cables are correctly adjusted.
Are all brakes OK?
Yes - Checking wheel sensors
No - Remedy the component
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Remedy the component
- The wheel bearing is sticking or there is excessive play.
Remedy as necessary.
Select Continue when the fault has been remedied.
Continue - Verification
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Checking wheel sensors
- Switch off the ignition.
Check that the wheel sensors are installed securely against the shaft / hub. Remove any dirt between the sensor and the mating surface.
Is the wheel sensor correctly installed?
Yes - Checking the wheel sensor and pulse wheel
No - Remedy the component
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Remedy the component
- One or more brakes are sticking.
Remedy as necessary.
Select Continue when the fault has been remedied.
Continue - Verification
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Checking the wheel sensor and pulse wheel
- Remove the front wheel.
Check that the tip of the wheel sensor is undamaged.
Check that the pulse wheel is secure. Check that the pulse wheel is free of damage and scratches etc.
Check that the clearance between the wheel sensor and the pulse wheel is 0.2-1.8 mm.
Check the pulse wheel according to Checking pulse wheel lateral runout Testing and Inspection , Section 5 (50-59), Brakes, 1996-.
Are the pulse wheel and the wheel sensor OK?
Yes - Checking contact resistance and oxidation
No - Remedy the component
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Remedy the component
- The wheel sensor is incorrectly installed or loose.
Install the wheel sensor according to Front wheel sensor, replacement Front Wheel Sensor, Replacement , Section 5 (50-59), Brakes, 1996-. Replace the wheel sensor if it is damaged.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Checking contact resistance and oxidation
Check the wheel sensor connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Select Continue when the fault has been remedied.
Continue - Checking wiring and terminals
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Remedy the component
- The pulse wheel and wheel sensor are not OK.
Remedy as necessary.
Select Continue when the fault has been remedied.
Continue - Verification
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Checking wiring and terminals
Check the cable between wheel sensor connector terminal 1 and control module female connector, pin:
7 (diagnostic trouble code (DTC) ABS-311), left front wheel.
5 (diagnostic trouble code (DTC) ABS-312), right front wheel.
9 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
3 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
for:
an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults , Section 5 (50-59), Brakes, 1996-.
an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults , Section 5 (50-59), Brakes, 1996-.
an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults , Section 5 (50-59), Brakes, 1996-.
Select Continue when the fault has been remedied.
Continue - Checking for interference
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Checking for interference
Check that the wiring for the wheel sensors is not too near sources of interference, such as electric motors, ignition cables, mobile telephone cables etc.
Remedy as necessary.
Select Continue when the fault has been remedied.
Continue - Verification
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Repairing short-circuits
- Ignition off
- Disconnect the breakout box.
Check the cable between wheel sensor female connector pin 1 and control module female connector pin:
7 (diagnostic trouble code (DTC) ABS-311), left front wheel.
5 (diagnostic trouble code (DTC) ABS-312), right front wheel.
9 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
3 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Continue - Verification
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Repairing short-circuits
- Ignition off
- Disconnect the breakout box.
Check the cable between wheel sensor connector terminal 1 and control module female connector, pin:
7 (diagnostic trouble code (DTC) ABS-311), left front wheel.
5 (diagnostic trouble code (DTC) ABS-312), right front wheel.
9 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
3 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Select Continue when the fault has been remedied.
Continue - Verification
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Checking the resistance in the wheel sensor
- Ignition off.
- Remove the fender liner to access the wheel sensor connector.
- Clean thoroughly around the connector.
- Disconnect the wheel sensor.
- Control module disconnected.
Connect an ohmmeter between terminals 1 and 2 on the male half of the wheel sensor connector.
The ohmmeter should read 1.28 - 1.92 kohms.
OK - Check the resistance in the signal cable
Not OK - Replacing the component
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Check the resistance in the signal cable
- Ignition off.
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between the female half of the wheel sensor connector terminal 1 and the female half of the control module connector terminal:
7 (diagnostic trouble code (DTC) ABS-311), left front wheel.
5 (diagnostic trouble code (DTC) ABS-312), right front wheel.
9 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
3 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
The ohmmeter should read approximately 0 ohms.
OK - Checking the resistance in the ground lead
Not OK - Remedy open-circuit
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Replacing the component
- There were no faults in the wheel sensor wiring.
Try a new wheel sensor according to Front wheel sensor, replacement Front Wheel Sensor, Replacement , Section 5 (50-59), Brakes, 1996-.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Checking the resistance in the ground lead
- Ignition off.
- Wheel sensor disconnected.
- Control module disconnected.
Connect an ohmmeter between the female half of the wheel sensor connector terminal 2 and control module connector terminal:
6 (diagnostic trouble code (DTC) ABS-311), left front wheel.
4 (diagnostic trouble code (DTC) ABS-312), right front wheel.
8 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
1 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
The ohmmeter should read approximately 0 ohms.
OK - Checking for contact resistance and oxidation
Not OK - Checking for an open-circuit
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Remedy open-circuit
Check the cable between the female half of the wheel sensor connector terminal 1 and the female half of the control module connector terminal:
7 (diagnostic trouble code (DTC) ABS-311), left front wheel.
5 (diagnostic trouble code (DTC) ABS-312), right front wheel.
9 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
3 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Checking for contact resistance and oxidation
- The cause of the diagnostic trouble code (DTC) was loose connections in the wheel sensor and control module connectors.
Check the connectors for contact resistance and oxidation. Remedy according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Checking for an open-circuit
Check the cable between the female half of the wheel sensor connector terminal 2 and the female half of the control module connector terminal:
6 (diagnostic trouble code (DTC) ABS-311), left front wheel.
4 (diagnostic trouble code (DTC) ABS-312), right front wheel.
8 (diagnostic trouble code (DTC) ABS-313), left rear wheel.
1 (diagnostic trouble code (DTC) ABS-314), right rear wheel.
for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault , Section 5 (50-59), Brakes, 1996-.
Select "Continue" when the fault has been remedied.
Continue - Verification
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied as follows:
- Ignition off.
- Reinstall the connectors, components etc.
- Disconnect VCT 2000 so that the diagnostics are stopped.
- Ignition on.
- Test drive the car according to Test driving Test Driving.
- Stop the car. Do not switch off the ignition.
- Connect VCT 2000 to the VIDA station. Connect the VIDA station to the data link connector (DLC) in the car.
- Read off diagnostic trouble codes (DTCs).
Has the diagnostic trouble code (DTC) disappeared?
Yes - VERIFIED
No - VERIFICATION FAILEDPAPER
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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 - FAULT-TRACING FAILED
No - Attempt New Test
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Attempt New Test - Checking the alternating current
FAULT-TRACING FAILED - FAULT-TRACING FAILED
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