Faulty Signal
Faulty signal
Checking for permanent or intermittent faults
- Ignition on.
Check that the sun roof can be moved to its limit positions.
Can the sun roof be operated?
Yes - Intermittent fault
No - Checking for a short-circuit
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Checking for a short-circuit
Check the cable between the sun roof module (SRM) and the roof lamp module. Check for a short-circuit to supply voltage.
UEM-0070 Sun roof. Faulty signal
The sun roof module (SRM) terminal #3A and roof lamp module terminal #2B.
UEM-0070 Sun roof. Faulty signal
The sun roof module (SRM) terminal #7A and roof lamp module terminal #1B.
Replace the cable if a fault is found.
Other information:
- For further information about signals and other values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- To access the roof lamp module connector, see Replacing interior lighting Service and Repair
- To access the sun roof module (SRM) connector, see Sun roof module (SRM), replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Checking the cable
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Checking the cable
Check the wiring between the sun roof switch and the roof lamp module. Check for a short-circuit to supply voltage.
Other information:
- For further information about signals and other values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Replacing the component
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Replacing the component
Visually check for damage to the roof lamp module and its switches.
If no fault is found replace the sun roof switch. See Switch sun roof, replacing Service and Repair.
Continue - Verification
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Intermittent fault
Check the connector on the sun roof module (SRM) and the connector on the roof lamp module. Check for contact resistance and oxidation. Check for loose connections.
Check the cable between the sun roof module (SRM) and the roof lamp module. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.
UEM-0070 Sun roof. Faulty signal
The sun roof module (SRM) terminal #3A and roof lamp module terminal #2B.
UEM-0070 Sun roof. Faulty signal
The sun roof module (SRM) terminal #7A and roof lamp module terminal #1B.
Check the wiring between sun roof switch and RCM. Check for an intermittent short-circuit to supply voltage.
If no fault is found replace the sun roof switch. See Switch sun roof, replacing Service and Repair.
Other information:
- For further information about signals and other values, see Signal specification Signal Specification, Upper Electronic Module (UEM)
- To access the roof lamp module connector, see Replacing interior lighting Service and Repair
- To access the sun roof module (SRM) connector, see Sun roof module (SRM), replacing Service and Repair
- To replace the switch for the sun roof, see Switch sun roof, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Fault-tracing information
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Verification
Verification
Verification
Hint: After the repair it is necessary to check that the fault has been rectified.
- Ignition off.
- Connect the connectors, install the components, etc.
- Ignition on.
Check that the sunroof can be moved to its end position.
Does the sunroof move?
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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Attempt New Test - Checking for permanent or intermittent faults
FAULT-TRACING FAILED - No Fault Found
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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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FAULT FOUND - Fault Found
Attempt New Test - Checking for permanent or intermittent faults
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