Egr Valve Over Temperature Error; Egr Modulator - Mahindra Bolero Maxitruck Plus BS III 2013 Diagnostic Manual

DIAGNOSTIC MANUAL
P1403

EGR MODULATOR

EGR modulator controls the EGR valve . EMS ECU converts the air control output into duty cycle and
outputs a PWM signal to EGR modulator
NORMAL OPERATION

Ignition ON

No error detected in EGR control circuit during self check

Engine runs as per the EGR mapping
DTC DETECTING CONDITIONS

Ignition ON

EMS ECU supply voltage 8-16V

Power stage overheating is detected
DTC REACTIONS

OBD lamp continuously ON after the DTC registers
continuously in 3 driving cycles*

EGR Switches OFF.
HEALING CONDITION

Self Healing
*Driving Cycle -
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© 2013 Mahindra & Mahindra Ltd.

EGR VALVE OVER TEMPERATURE ERROR.

.DTC INFORMATION
Ignition ON and OFF with engine running. Vehicle speed can be 0 kmph
EMS
PROBABLE CAUSES OF FAILURE

MAN-00226
MAY 2013/Rev 1
Defective EMS ECU
36