Signal Too Low

Signal too low

Checking the connectors




- Ignition off.
Check central electronic module (CEM) connector D. Check for contact resistance and oxidation. Remedy as necessary.
Check for any damage.

Hint: If the fault cause is found, reinstall the components, connectors etc.
If the fault cause was not found, do not reconnect the connector before carrying out further fault-tracing.

Other information:
- To replace the connectors for the central electronic module (CEM), see: Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- Checking wiring and terminals Checking Wiring And Terminals

Was a fault detected?

Yes - Verification

No - Checking the component and cable

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

Checking the component and cable




- Ignition off.
Check the cable between central electronic module (CEM) connector terminal #D16 and ignition switch connector terminal #15A (#1). Check for an open-circuit. Check for a short-circuit to ground.
The voltage must be the same as battery voltage if the key is in position I or III.
Remedy as necessary.

Hint: For intermediate junction points, see the relevant wiring diagram.

Other information:
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Pinout Values and Diagnostic Parameters
- Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- Checking wiring and terminals Checking Wiring And Terminals









Is the voltage the same as battery voltage?

Yes - Verification

No - Replacing the component

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

Replacing the component
To replace the connector for the ignition switch, see: Steering wheel lock, replacing Service and Repair


Continue - Verification

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

Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect connectors, install components, etc.
- Key in position III.
Check that 15 voltage is OK.





Is voltage on the wire high?

Yes - VERIFIED

No - VERIFICATION FAILED

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

VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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

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

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

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the connectors

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