MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Electrical Distribution

Communications Network

418-00 Module Communications Network

2016 MustangReference 5,924 / 6,619HTML edition
← Chapter contentsProcedure contents

Positive Lead

Measurement / Action

Negative Lead

C4831-6

Ground

Is the voltage greater than 11 volts?

Yes

GO to AB2

No

VERIFY BJB fuse 15 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AB2 CHECK THE MOVEABLE ROOF CONTROL MODULE B (MRCMB) GROUND CIRCUIT FOR AN OPEN

Ignition OFF. Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C4831-3

Ground

C4831-5

Ground

Is the resistance less than 3 ohms?

Yes

GO to AB3

No

REPAIR the circuit.

AB3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE MOVEABLE ROOF CONTROL MODULE B (MRCMB) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431. Measure:

Click to display connectors

Positive Lead

Measurement / Action

Negative Lead

C4831-9

C2431-23

C4831-10

C2431-22

Are the resistances less than 3 ohms?

Yes

GO to AB4

No

REPAIR the circuit in question.

AB4 CHECK FOR CORRECT MOVEABLE ROOF CONTROL MODULE B (MRCMB) OPERATION

Source reference 5924

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.