MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Electrical Distribution

Communications Network

418-00 Module Communications Network

2016 MustangReference 5,941 / 6,619HTML edition
← Chapter contentsProcedure contents

Positive Lead

Measurement / Action

Negative Lead

C251-3

Ground

C251-11

Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.

ABS module C135 CCM C1582 HUD module C2395 OCSM C3043 PSCM C1463A RCM C310B SCCM C226A VDM C4396

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

For the ABS module, GO to AE21 For the CCM, GO to AE23 For the HUD module, GO to AE24 For the OCSM, GO to AE26 For the PSCM, GO to AE25 For the RCM, GO to AE27 For the SCCM, GO to AE28 For the VDM, GO to AE29

No

REPAIR the circuit in question. CONNECT all modules.

AE12 CHECK FOR RESTORED COMMUNICATION WITH THE GWM (GATEWAY MODULE A) AND THE SCCM (STEERING COLUMN CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 13 (7.5A). Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to AE13

No

INSTALL the removed fuse. GO to AE14

AE13 CHECK FOR RESTORED COMMUNICATION WITH THE SCCM (STEERING COLUMN CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: SCCM C226A. Using a diagnostic scan tool, perform the network test.

Do all other modules pass the network test?

Yes

CONNECT the SCCM. GO to Pinpoint Test F

No

GO to Pinpoint Test AC

Source reference 5941

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.