Faulty Signal

Faulty signal

Checking the wheel speed




- Ignition on.
- Read off the wheel speeds.
- Raise the car so that the relevant wheel is clear of the ground.
Spin the relevant wheel. Check the wheel speed.









Is the wheel speed OK?

Yes - Faulty signal. Intermittent fault

No - Checking the resistance in the signal cable

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Checking the resistance in the signal cable








- Ignition off.
- DSA control module disconnected.
- ABS control module disconnected.
- Breakout box connected to the ABS control module.
Connect an ohmmeter between DSA control module connector:
- terminal 2 and breakout box terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 and breakout box terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 and breakout box terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 and breakout box terminal 24 (diagnostic trouble code (DTC) DSA-314).

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









The ohmmeter should read approximately 0 ohms.

OK - Checking the signal cable resistance to ground

Not OK - Checking for an open-circuit

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Checking for an open-circuit
Check the cable between the DSA control module:
- terminal 2 and breakout box terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 and breakout box terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 and breakout box terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 and breakout box terminal 24 (diagnostic trouble code (DTC) DSA-314)
for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









Select Continue when the fault has been remedied.

Continue - Verification

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Checking the signal cable resistance to ground








- Ignition off.
- DSA control module disconnected.
- ABS control module disconnected.
Connect an ohmmeter between ground and DSA control module connector:
- terminal 2 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 (diagnostic trouble code (DTC) DSA-314).

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.









The ohmmeter should read infinite resistance.

OK - Checking the signal cable for a short-circuit to supply voltage

Not OK - Checking for a short-circuit

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Checking for a short-circuit
Check the cable between the DSA control module:
- terminal 2 and breakout box terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 and breakout box terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 and breakout box terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 and breakout box terminal 24 (diagnostic trouble code (DTC) DSA-314).
for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









Select Continue when the fault has been remedied.

Continue - Verification

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Checking the signal cable for a short-circuit to supply voltage








- Ignition off.
- Connect the DSA control module.
- Connect the ABS control module.
- Breakout box connected to the ABS control module.
- Ignition on.
Connect an electrician's screwdriver (with a bulb of at least 3 W) between ground and breakout box:
- terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 24 (diagnostic trouble code (DTC) DSA-314).

Other information
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









The electricians screwdriver should notlight. Is the electrician's screwdriver unlit?

Yes - Fault cause and checking for contact resistance and oxidation

No - Checking for a short-circuit

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Fault cause and checking for contact resistance and oxidation
The diagnostic trouble code (DTC) was caused by poor contact in the DSA control module and / or ABS control module connectors.
Check the connectors for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Select Continue when the fault has been remedied.

Continue - Verification

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Checking for a short-circuit
Check the cable between the DSA control module:
- terminal 2 and ABS control module terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 and ABS control module terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 and ABS control module terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 and ABS control module terminal 24 (diagnostic trouble code (DTC) DSA-314)
for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









Select Continue when the fault has been remedied.

Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off.
- Reconnect the connectors, reinstall components etc.
- DSA control module connected.
- Ignition on.
- Read off the wheel speeds.
- Raise the car so that the relevant wheel is clear of the ground.
Spin the relevant wheel. Check the wheel speed.









Is the wheel speed OK?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the wheel speed

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Faulty signal. Intermittent fault





Faulty signal. Intermittent fault

Checking wiring and terminals
Check DSA control module and ABS control module connectors for contact resistance and oxidation Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.

Check the cable between the DSA control module:
- terminal 2 and ABS control module terminal 25 (diagnostic trouble code (DTC) DSA-311)
- terminal 3 and ABS control module terminal 26 (diagnostic trouble code (DTC) DSA-312)
- terminal 4 and ABS control module terminal 23 (diagnostic trouble code (DTC) DSA-313)
- terminal 12 and ABS control module terminal 24 (diagnostic trouble code (DTC) DSA-314)
for intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults , an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults and an intermittent short-circuit to supply according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.

Check that the cable is not too close to sources of interference such as electric motors, ignition cables, carphone cables etc.

Other information
- To connect the breakout box for DSA, see Connecting the breakout box. DSA Connecting The Breakout Box. DSA.
- To connect the breakout box for ABS, see Connecting the breakout box. ABS Connecting The Breakout Box. ABS.









Select Continue when the fault has been remedied.

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 - Attempt New Test

FAULT FOUND - FAULT FOUND

DONE - DONE

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Attempt New Test - Checking the wheel speed

FAULT FOUND - FAULT FOUND

DONE - DONE

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