Diagnostic Manual ( EMS) LCV MDI BSIII CRDe
Rev 01- Mar 14
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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 whole of the present
document, are prohibited without the prior written consent of 2014 Mahindra & Mahindra Ltd (Truck & Bus Division)
Accelerator Pedal Module
Description:
The Accelerator pedal module (APM) mounts in place of accelerator pedal
and is connected to the ECU by wires. The APM sensor is a variable resistor
(potentiometer) whose resistance 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.
DTC Diagnostic item
P0222
P0223
P1220
Signal range check for APP pedal sensor2 below minimum limit.
Signal range check for APP pedal sensor2 above maximum limit
Pedal sensor fault(electrical,track2)
DTC detection condition Probable cause
Sensor output voltage has continued to between 0
to 2.5V,with varying accelerator pedal position.
Malfunction; out-of-range
With the fully pressed Accelerator pedal module, the
sensor output voltage has continued to be 2.5V or 0
for 4 sec.
Reaction
• The engine speed not varying with changing
accelerator pedal position. (Constant 1300
rpm)- for P0221
• The system lamp is continuously on.
• Engine can switch off for P 0223In addition to
that if the P0123 is registered then in that
drive cycle the vehicle will go into limp home.
But in the next drive cycle the engine cannot
be started.
• Open or shorted
Accelerator pedal
module circuits,
loose or wrongs
connections.
• Accelerator pedal
module failed
P 0222: Signal range check for APP2 below minimum limit
This error is registered when the signal is below 4.7 V i.e. in Open also.
Effect: Engine will run at continuous speed of 1300 RPM
P0222
P0223
P1220
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