Operation CHARM: Car repair manuals for everyone.

Signal Too Low Or Signal Missing







Signal too low or signal missing

Checking components and wiring
Check the signal cable for alarm output P1. Check between accessory control module terminal #B16 and the alarm unit connector. Check for a short-circuit to ground. Check for an open-circuit.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box. Accessory electronic module Connecting The Breakout Box, Accessory Electronic Module (AEM)
- To access or replace the Accessory Electronic Module (AEM) and connector, see Accessory electronic module (AEM), replacing Replacing Accessory Electronic Module
- For information about signals, see Signal description. Accessory electronic module (AEM) Signal Description, Accessory Electronic Module (AEM)
- To fault-trace wiring and terminals see 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
- Reconnect the components, connectors etc.
- Ignition on.
Check the function of the alarm by activating it appropriately.

Does the system function?

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 components and wiring

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