Signal Too Low
Signal too low
Checking for permanent or intermittent faults
- Ignition on.
Check if the lamp in the power door mirror lights up and goes out.
Is the lamp in the power door mirror working?
Yes - Intermittent fault
No - Checking for a short-circuit
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Checking for a short-circuit
If the car is equipped with a 10-pin connector
Check the cable between door control module terminal #8B and power door mirror terminal #6. Check for a short-circuit to ground.
If the car is equipped with a 16-pin connector
Check the cable between door control module terminal #8B and power door mirror terminal #13. Check for a short-circuit to ground.
Replace the cable if a fault is found.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Were any faults found in the cable?
Yes - Verification
No - Replacing the component
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Replacing the component
Check that there are no short-circuits in the bulb holder.
Remedy as necessary.
If no fault is found, replace the lamp in the power door mirror according to Bulb, ground lighting, door mirror, replacing Bulb, Ground Lighting, Door Mirror, Replacing.
Continue - Verification
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Intermittent fault
Check the control module and power door mirror connectors. Check for contact resistance, oxidation and loose connections.
If the car is equipped with a 10-pin connector
Check the cable between door control module terminal #8B and power door mirror terminal #6. Check for an intermittent short-circuit to ground. Check for an intermittent open-circuit.
If the car is equipped with a 16-pin connector
Check the cable between door control module terminal #8B and power door mirror terminal #13. Check for an intermittent short-circuit to ground. Check for an intermittent open-circuit.
Check the bulb holder and bulb if no fault was found.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
- To access and replace the lamp and bulb holder, see Bulb, ground lighting, door mirror, replacing Bulb, Ground Lighting, Door Mirror, Replacing
- Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Continue - Fault-tracing information
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reconnect the components, connectors etc.
- Ignition on.
Check if the lamp in the power door mirror lights.
Does the lamp in the power door mirror light?
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 - No Fault Found
Attempt New Test - Checking for permanent or intermittent faults
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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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