Convertible Top — 2016 workshop reference 1543

Yes	GO to D4
No	REPAIR the circuit.

D4 VERIFY ALL WIRING CONNECTIONS

Disconnect all Moveable Roof Control Module A (MRCMA) related in-line connectors. Refer to Wiring Diagrams Cell 103 for schematic and connector information. Using a good light source, inspect Moveable Roof Control Module A (MRCMA) C4830 and related in-line connectors for the following:

corrosion - install new connector or terminal and clean the module pins damaged or bent pins - install new terminals or pins pushed-out pins - install new pins as necessary spread terminals - install new terminals as necessary

Are the connectors free of corrosion, damaged pins, bent pins, pushed-out pins and spread terminals?

Yes	GO to D5
No	REPAIR the affected connectors or terminals. Refer to Wiring Diagrams Cell 5 for schematic and connector information.

D5 VERIFY SENSOR VOLTAGE SUPPLY

Connect Moveable Roof Control Module A (MRCMA) C4830. Connect convertible top latch switch C9111. Connect LH tonneau cover sensor C4525. Connect all disconnected in-line connectors. Make sure all connectors fully seat and latch correctly. Ignition ON. Measure and record the battery Using a diagnostic scan tool, view the Moveable Roof Control Module A (MRCMA) convertible top latch sensor voltage (LTCH_SNSR_V) PID and the module supply voltage (VOLT_SUPPLY) PID.

Do both Parameter Identifications (PIDs) display greater than 9 volts?

Yes	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
No	If both Parameter Identifications (PIDs) display 9 volts or less, or only the VOLT_SUPPLY PID displays 9 volts or less, GO to D6 If the VOLT_SUPPLY PID displays greater than 9 volts and the LTCH_SNSR_V PID displays 9 volts or less , CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Moveable Roof Control Module A (MRCMA). REFER to: Convertible Top Motor (501-18 Convertible Top, Removal and Installation).

Yes

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

If both Parameter Identifications (PIDs) display 9 volts or less, or only the VOLT_SUPPLY PID displays 9 volts or less, GO to D6 If the VOLT_SUPPLY PID displays greater than 9 volts and the LTCH_SNSR_V PID displays 9 volts or less , CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Moveable Roof Control Module A (MRCMA). REFER to: Convertible Top Motor (501-18 Convertible Top, Removal and Installation).

D6 CHECK THE MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN OR EXCESSIVE RESISTANCE

Ignition OFF. Disconnect Moveable Roof Control Module A (MRCMA) C4830. Remove BJB fuse 17 (20A). Measure:

Click to display connectors

Source reference 1543

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.