DIAGNOSTIC MANUAL
MAN-00152
EMS
OCT 2011/Rev 1
The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or whole of the present document,
are prohibited without the prior written consent of Mahindra & Mahindra Ltd. The use of this document by any person other than the trained personnel, at the Authorized Service Centre of Mahindra & Mahindra Ltd.,
will amount to unauthorized use and shall be liable for penalty/prosecution
© 2011 Mahindra & Mahindra Ltd.
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P2128 - Signal range check for APP sensor 2 above maximum limit
ACCELERATOR PEDAL
The Accelerator pedal module (APM) is mounted in place of accelerator pedal and is connected to the ECU
by wires. The APM is a potentiometer whose output voltage changes according to the pedal position. ECU
applies a reference voltage to the APM sensor and then measures the voltage that is present on the APM
sensor signal circuit. The ECU uses the APM sensor signal for further calculation of fuelling & other engine
operational parameters
.
COMPONENT LOCATION
NORMAL
OPERATION
During Ignition ON, EMS ECU receives an output voltage signal from the
accelerator pedal module and is within the specified range
DTC DETECTING
CONDITION
The output voltage signal received from the accelerator pedal module is
above the maximum limit
PROBABLE
CAUSES
Short /open in accelerator pedal module sensor circuit
Faulty accelerator pedal module
Faulty EMS ECU
LAMP STATUS
OBD lamp ON
DTC REACTION
Torque limitations
HEALING
CONDITION
Ignition OFF/ON