Fault-Tracing Information

Fault-tracing

Fault-tracing information
Central electronic module (CEM) has built-in short-circuit protection to protect its internal electronics. This means that if Central electronic module (CEM) detects a fault on certain outputs, the output is turned off during the existing driving cycle.
The output is activated again after the ignition has been turned off and on again.
If the fault remains, the output will be shut off again, when Central electronic module (CEM) detects the fault.
Use the following information and general checks during fault-tracing.

Note! Check that the fuses are intact. For locations, see the instruction manual, cover for fuse box, fuse ratings or similar.

1. Check, if possible, relevant functions in the vehicle using buttons/controls/test drives to determine the status of the fault.

Note! If the vehicle does not show any of the given symptoms in the diagnostic trouble code information (DTC), this may mean that the fault is intermittent or that the control module is not detecting the fault at this moment.

2. Use the diagnostic trouble code's frozen values, status identifiers and counter to determine the operating conditions when the fault was detected, the fault's current status and any degree of intermittence of the fault.
3. Check and fault-trace according to the fault causes that are specified in the diagnostic trouble code (DTC) information.
4. Use VIDA Vehicle communication. Read off the parameters, activate components and functions, carry out quick tests and checking routines for the diagnostic trouble codes to identify the fault.
5. Check relevant signals using wiring diagram, signal specification and breakout box.

Note! More information is available in Design and function.

Remedy as necessary.

Other information
- Description of frozen values Description Of Frozen Values, CEM
- Description of status identifier Description Of Status Identifier
- Description of counter Description Of Counter
- Description of activation Description Of Activation
- Description of parameters Description Of Parameters
- Connecting the breakout box For Connection Of Breakout Box To Central Electronic Module (CEM)
- Signal specification Signal Description Central Electronic Module (CEM)
- Checking interference in LIN-net Checking Interference In LIN-Net
- Checking wiring and terminals Checking Wiring And Terminals













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Fault-tracing information




Information

Fault-tracing information
In case of this defect, troubleshooting is not followed by verification.
The information can be displayed again or the fault-tracing for this fault can be interrupted.

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