Motronic ME 7
Fault Light For Power Accelerator
Activation K132
Operation
When the ignition is switched on, K132 is illuminated
for three seconds. If there are no faults in the system
the light goes out.
A separate indicator light is used for the Electronic
Power Control (EPC) system.
Malfunctions in either the electronic accelerator
system or associated sensors are detected by self-
diagnosis, and indicated by the separate EPC MIL.
K132 is activated by the Motronic ECM providing a
Ground for the light.
For example, a fault in the Mass Air Flow (MAF)
Sensor G70 triggers the EPC MIL because of its
usage by the ECM for an engine load signal. The ECM
uses this signal to check signal plausibility of other
inputs. At the same time, an entry is made in the fault
memory.
Substitute Function
There is no substitute function for K132.
On Board Diagnosis
The ECM recognizes Short circuit to Battery +/
Ground, as well as Open circuit.
EPC MIL in the Jetta
and the Passat
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