Signal Too Low. Intermittent Fault
Signal too low. Intermittent fault
Checking the connectors
Check the central electronic module (CEM) connector for contact resistance and oxidation and remedy according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check for damage carefully.
Hint: If the fault cause is found, reinstall the components, connectors etc.
If the fault cause is not found, do not reinstall the central electronic module (CEM) before continuing with fault-tracing.
Other information:
- To access the central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing.
Was a fault detected?
Yes - DONE
No - Checking wiring
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Checking wiring
Check the cable between central electronic module (CEM) connector #3B and ignition switch connector 15A #1 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and for a short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Other information
- The voltage must be the same as battery voltage if the key is in positions II or III.
- To access / replace the central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- For the intermediate junction point, see the relevant wiring diagram
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
Continue - DONE
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