Positive Lead Measurement / Action Negative Lead — 2016 workshop reference 4540

AW5 CHECK THE SUSPECT MODULE GROUND CIRCUIT FOR CONTINUITY

Measure the voltage at the suspect module. For the ACM, measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C240A-1		C240A-13

For the APIM, measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2383-1		C2383-37

For the audio DSP module, measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2385B-14		C2385B-11

For the DACMC, measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C240A-1		C240A-13

For the FCIM, measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2402A-7		C2402A-1

Is the suspect module voltage greater than 11 volts?

Yes	• For the ACM, GO to AW6 • For the APIM, GO to AW7 • For the audio DSP module, GO to AW8 • For the DACMC, GO to AW9 • For the FCIM, GO to AW10
No		REPAIR the circuit for high resistance.

Yes

• For the ACM, GO to AW6

• For the APIM, GO to AW7

• For the audio DSP module, GO to AW8

• For the DACMC, GO to AW9

• For the FCIM, GO to AW10

REPAIR the circuit for high resistance.

AW6 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all the ACM connectors. Repair:

Source reference 4540

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.