Powertrain Malfunction Indicator (Wrench)

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The powertrain malfunction indicator (wrench) illuminates whenever a concern within the hybrid electric system is detected and a repair is needed. When the concern is present, the control module that detected the concern stores the diagnostic trouble code (DTC) and broadcasts a caution on CAN message to the instrument cluster. Upon receiving the CAN message, the instrument cluster turns the indicator on.

The powertrain malfunction indicator (wrench) is turned off when the concern is no longer present and the ignition is cycled. If the powertrain malfunction indicator (wrench) flashes at the once per second rate, it indicates that the vehicle is in the engine running diagnostic mode. Refer to DIAGNOSTIC MODES for engine running diagnostic mode. The powertrain malfunction indicator (wrench) illuminates for 3 seconds during instrument cluster prove-out when the ignition is cycled from the OFF to the ON position.

Fig 1: Powertrain Malfunction Indicator System Diagram (Wrench)

Courtesy of FORD MOTOR CO.

Powertrain Malfunction Indicator (Wrench)

ITEMS DESCRIPTION CHART

Item	Number	Description
1	-	PCM
2	-	Transaxle Control Module (TCM)
3	-	Battery Energy Control Module (BECM)
4	-	Anti-lock Brake System (ABS)
5	-	PCM, Electronic Throttle Control (ETC), ABS Caution On
6	-	Transaxle System Caution On
7	-	High Voltage Traction Battery System Caution On
8	-	ABS Caution On
9	-	Instrument Cluster
10	-	Powertrain Malfunction Indicator (Wrench)