Operation CHARM: Car repair manuals for everyone.

Current Too High. Permanent Fault






Current too high. Permanent fault

Checking connectors and wiring




- Check control module connector D for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition on.
Connect a voltmeter between control module D8 and ground, front lock.
Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access / replace the control module, see Replacing the control module Service and Repair.
- To connect the breakout box, see Connecting the convertible control unit breakout box Connecting the Breakout Box.









Was a short-circuit found?

Yes - Verification

No - Checking component

-------------------------------------------------

Checking component




- Check the relevant motor connector for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition on.
Connect a voltmeter between motor 1 and ground.
Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access / replace the motor for the front lock, see Replacing motors Service and Repair.









Was a short-circuit found?

Yes - Verification

No - Checking wiring

-------------------------------------------------

Checking wiring




- Check that the micro-switch appears normal.
- Ignition on.
- Read off status for the front locking arm micro-switch, rear position.
- Operate the micro-switch manually.
The status should change from activation (micro-switch on) to non activation (micro-switch off).

Other information:
- To access / replace the front locking arm micro-switch, rear position, see Replacing and adjusting micro-switches Replacing and Adjusting Micro-Switches.
- There is a short-circuit to ground if the status is constantly low.
- If the status is constantly high there is an open-circuit or a short-circuit to ground.

Hint: The micro-switch can be activated by hand or using a pointed tool. Be careful.





Does the status change?

Yes - Verification

No - Checking component

-------------------------------------------------

Checking component




- Check control module connector C for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition on.
Connect a voltmeter between micro-switch 3 and ground.
Activate the micro-switch manually so that it is active throughout the test
Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Replace the micro-switch if a short-circuit is found.
Remedy as necessary.













Other information:
- To access / replace the locking arm micro-switch, rear position, see Replacing and adjusting micro-switches Replacing and Adjusting Micro-Switches.

Hint: The micro-switch can be activated by hand or using a pointed tool. Be careful.

Was a short-circuit found?

Yes - Verification

No - Checking for an open-circuit in the micro-switch

-------------------------------------------------

Checking for an open-circuit in the micro-switch




- Check control module connector C and micro-switch connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Ignition off.
Connect an ohmmeter between micro-switch 3 and 4.
Activate the micro-switch manually so that it is active throughout the test.
Measure for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If an open-circuit is found, replace the front locking arm micro-switch, rear position.
If no fault is found there is probably a fault in the cable between the control module and the micro-switch connector.
Remedy as necessary.













Other information:
- To access / replace the front locking arm micro-switch, rear position, see Replacing and adjusting micro-switches Replacing and Adjusting Micro-Switches.

Hint: The micro-switch can be activated by hand or using a pointed tool. Be careful.

Select Continue when the fault has been remedied.

Continue - 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
- Apply parking brake
- Close the luggage compartment lid
- Speed < 4km/h.
Operate the control switch to move the convertible top.
Move the convertible top to its end positions.

Does the convertible top work?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

-------------------------------------------------

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 - Exit fault-tracing

No - Attempt New Test

------------------------

Attempt New Test - Checking connectors and wiring

-------------------------------------------------