Signal Too Low

Signal too low

Checking the status




- Ignition on.
Click the VCT2000 symbol to activate the back-up gear inhibitor.
Check if the fault is permanent or intermittent.
It is not possible to engage back-up gear when the back-up gear inhibitor is activated.
The fault is permanent if the back-up gear inhibitor does not activate.
If the back-up gear inhibitor is activated, this is an indication that the fault was present previously but that it is not active at the moment, i.e. the fault is intermittent.





Continue - Checking the component and wiring

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

Checking the component and wiring
Check the voltage on the gear selector module (GSM) connector terminal #1-C13 to the output on the central electronic module (CEM). The voltage must be approximately 12 V when the back-up gear inhibitor is activated.
Check the control signal cable. Check for a short-circuit to ground.
Take readings between:
- Central electronic module (CEM) terminal #A39 (#39) and gear selector module (GSM) connector terminal #1-C13.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - 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.
Click the VCT2000 symbol to activate and deactivate the back-up gear inhibitor.
Check that the function is OK.





Is the function OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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

Fault-tracing information

Attempt New Test - Checking the component and wiring

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