Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C4830-7 | C4830-1 |
Is the resistance greater than 10,000 ohms?
Yes | INSTALL a new convertible top latch switch. REFER to: Convertible Top Front Striker (501-18 Convertible Top, Removal and Installation). |
|---|---|
No | REPAIR the circuit. |
P1240:1C
Refer to Wiring Diagrams Cell 103 for schematic and connector information.
Normal Operation and Fault Conditions
The convertible top latch switch and the LH tonneau cover switch are hardwired to the Moveable Roof Control Module A (MRCMA). The Moveable Roof Control Module A (MRCMA) sends battery voltage to both Hall-effect switches and back to the Moveable Roof Control Module A (MRCMA) for fault detection purposes. When one of the switches or the volt reference circuit is faulted, the convertible top does not operate.
DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
|---|---|---|
P1240:1C Sensor Power Supply: Circuit Voltage Out of Range | This DTC sets if the convertible top latch switch voltage signal sent to the Moveable Roof Control Module A (MRCMA) is below a predetermined limit. |
Possible Sources
Wiring, terminals or connectors Moveable Roof Control Module A (MRCMA)
PINPOINT TEST D : P1240:1C
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
D1 CHECK FOR RETURNING DIAGNOSTIC TROUBLE CODES (DTCS)
Using a diagnostic scan tool, clear the Moveable Roof Control Module A (MRCMA) Diagnostic Trouble Codes (DTCs). Ignition OFF. Ignition ON. Using a diagnostic scan tool, carry out the Moveable Roof Control Module A (MRCMA) self-test.
Does DTC P1240:1C return?
Yes | GO to D1 |
|---|
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.