Fan 1 Control Circuit High - Mahindra Quanto Ems Diagnostic Manual

DIAGNOSTIC MANUAL
QUANTO
P0692
COOLING FAN LOW SPEED
The cooling fans are controlled by EMS ECU . Both the fans run either at low speed or at high speed. The
low speed of the cooling fans are controlled by pressure switch relay . Based on the coolant temperature
the EMS ECU controls the pressure switch relay to activate the low speed of the fans. Fans are ON at low
speed if the coolant temperature reaches 99 °C
.
NORMAL OPERATION

Ignition ON

Depending upon the coolant temperature , the EMS ECU
controls the low speed cooling fan

No malfunction detected by EMS ECU in the control circuit
of pressure switch relay
DTC DETECTING CONDITIONS

Ignition ON

EMS ECU supply voltage 8-16V

Short circuit to battery is detected in in the control circuit
of pressure switch relay
DTC REACTIONS

Low speed of the fans will not work based on coolant
temperature

However fans willl work at low speed based on AC pressure
HEALING CONDITION

Ignition Off/On
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© 2012 Mahindra & Mahindra Ltd.
EMS

FAN 1 CONTROL CIRCUIT HIGH

DTC INFORMATION
MAN-00201
SEP 2012/Rev 1
PROBABLE CAUSES OF FAILURE

Short to battery in
pressure switch relay
control wire

Faulty pressure switch
relay

Faulty EMS ECU
`
303