DTC | Description | Fault Trigger Conditions |
|---|---|---|
B1078:12 Convertible Top Latched Sensor: Circuit Short To Battery | This DTC sets if the convertible top latch switch voltage signal sent to the Moveable Roof Control Module A (MRCMA) is shorted to battery voltage. | |
B1078:14 Convertible Top Latched Sensor: Circuit Short To Ground or Open | This DTC sets if the convertible top latch switch voltage signal sent to the Moveable Roof Control Module A (MRCMA) is shorted to ground or open. | |
B1078:29 Convertible Top Latched Sensor: Signal Invalid | This DTC sets if the Moveable Roof Control Module A (MRCMA) receives an implausible signal from the convertible top latch switch. |
Possible Sources
Wiring, terminals or connectors Convertible top latch assembly Moveable Roof Control Module A (MRCMA)
PINPOINT TEST C : B1078:12, B1078:14, B1078:29
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.
C1 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. With the convertible top in the closed position, press and hold the convertible top DOWN switch for 2 seconds. Using a diagnostic scan tool, carry out the Moveable Roof Control Module A (MRCMA) self-test.
Does the DTC return?
Yes | If DTC B1078:12 or B1078:29 is present, GO to C2 If DTC B1078:14 is present, GO to C3 | |
|---|---|---|
No | The condition that caused the DTC to set is not present at this time. The concern may have been caused by a loose or corroded electrical connector or an intermittent concern. DISCONNECT and INSPECT convertible top latch switch C9111 and Moveable Roof Control Module A (MRCMA) C4830 for corrosion, bent pins, pushed-out pins and spread terminals. REPAIR or INSTALL new components as necessary. For all other Moveable Roof Control Module A (MRCMA) Diagnostic Trouble Codes (DTCs), GO to the DTC Chart: Moveable Roof Control Module A (MRCMA). | |
C2 CHECK THE CONVERTIBLE LATCH SWITCH SIGNAL CIRCUIT FOR A SHORT TO BATTERY VOLTAGE
Ignition OFF. Disconnect Moveable Roof Control Module A (MRCMA) C4830. Disconnect convertible top latch switch C9111. Ignition ON. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C4830-7 | Ground |
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.