Signal Too Low or Signal Missing
Signal too low or signal missing
Checking fuses
Check that the fuse for the high-pressure washer is intact. Replace the fuse if necessary.
After changing fuse, erase trouble codes.
Activate ignition position II.
Try to activate the headlight washers with the lever.
Hint: The washer must be activated for more than 0.3 seconds for the high-pressure washer to be activated. The high-pressure washer is activated every fifth time that the washers are activated if not more than 10 minutes have passed since the last activation. Warning light for low washer fluid level may not be on.
If the trouble code does not return and the high-pressure washer works, no further action is needed.
If the fuse fails again, or if the trouble code returns, continue troubleshooting.
Do you wish to continue with fault tracing?
Yes - Checking the component
No - Verification
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Checking the component
Replace relay 2/182.
Activate high-pressure washing by activating the washer for the windshield.
Hint: The washer must be activated for more than 0.3 seconds for the high-pressure washer to be activated. The high-pressure washer is activated every fifth time that the washers are activated if not more than 10 minutes have passed since the last activation.
If the function is OK, the cause of the fault was a damaged relay (short-circuit in the relay).
Other information:
- For further information about the fuses and relays, see the Wiring Diagram.
Do you wish to continue with fault tracing?
Yes - Checking high-pressure washer pump
No - Verification
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Checking fusebox
Remove headlight washer relay (2/182) from the fuse box socket.
Check the relay winding's drive circuit for short-circuiting to voltage by measuring voltage between #2 and ground in the relay socket.
Voltage between #2 and ground shall be battery voltage.
Remedy as necessary.
Other information:
- For further information about the fuses and relays, see the Wiring Diagram.
- Checking wiring and terminals Checking Wiring And Terminals
Do you wish to continue with fault tracing?
Yes - Checking the wiring
No - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate high-pressure cleaning by activating the windshield washer.
Hint: The washer must be activated for more than 0.3 seconds before high pressure cleaning will be activated. High-pressure cleaning is activated every fifth time the washers are activated if not more than 10 minutes have passed since the last activation.
Is the washer working?
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 fuses
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Checking the wiring
Check the cable between the headlight washer relay (2/182) #4 and central electronic module (CEM) #C25 for short circuits to ground and open circuits.
Disconnect washer pump and headlight washer relay (2/182). Check cable between connection #1 on the headlight washer relay (2/182) and ground for short-circuiting to ground.
Remedy as necessary.
Replace the fusebox if no fault is found.
Other information:
- For further information about the fuses and relays, see the Wiring Diagram.
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Checking high-pressure washer pump
Check that the fuse for the high-pressure washer is intact.
Disconnect the pump for high-pressure washing from its connector.
Try to activate the headlight washers with the lever.
If the fuse does not fail when the washer pump is disconnected, the cause of the trouble code being set is probably an internal short circuit in the washer pump for the headlights. Try with changing high-pressure washer pump.
If the fuse fails, even if the pump is disconnected, the pump is probably okay. Continue troubleshooting.
Do you wish to continue with fault tracing?
Yes - Checking fusebox
No - Verification
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