Signal Too Low

Signal too low

Checking the wiring








- Ignition off
- Disconnect central electronic module (CEM) connector C.
Check the power cable for a short-circuit to ground.
For S60 and V70
Take readings between:
- Central electronic module (CEM) terminal #C19 (#19) and left-hand lamp housing connector terminal #A3
- Central electronic module (CEM) terminal #C19 (#19) and left-hand sidemarker lamp terminal #A1.
For S80 without Bi-Xenon
Take readings between:
- Central electronic module (CEM) terminal #C19 (#19) and left-hand lamp housing connector terminal #A2
- Central electronic module (CEM) terminal #C19 (#19) and left-hand sidemarker lamp terminal #A1
- Central electronic module (CEM) terminal #C19 (#19) and left-hand parking lamp terminal #A1.
For S80 with Bi-Xenon
Take readings between:
- Central electronic module (CEM) terminal #C19 (#19) and left-hand parking lamp terminal #A1
- Central electronic module (CEM) terminal #C19 (#19) and left-hand sidemarker lamp terminal #A1
- Central electronic module (CEM) terminal #C19 (#19) and left-hand parking lamp terminal #A1.
For the XC90
Take readings between:
- Central electronic module (CEM) terminal #C19 (#19) and left-hand parking lamp terminal #A1
- Central electronic module (CEM) terminal #C19 (#19) and left-hand parking lamp terminal #A1.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Location of components Locations
- Checking wiring and terminals Checking Wiring And Terminals

Continue - Verification

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Verification





Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the parking lamp.
Check that the parking lamp is activated.

Is the parking lamp activated?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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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

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Attempt New Test - Checking the wiring

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