DIAGNOSTIC MANUAL MAN-00201
QUANTO
EMS
SEP 2012/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
© 2012 Mahindra & Mahindra Ltd.
`
P0118
SIGNAL RANGE CHECK FOR COOLANT TEMPERATURE SENSOR ABOVE MAXIMUM
LIMIT
COOLANT TEMPERATURE SENSOR
The CTS sensor is a variable resistor whose resistance changes as the temperature of the engine coolant
flowing past the sensor changes.(NTC resistor) When the coolant temperature is low, the sensor
resistance is high; when the coolant temperature is high, the sensor resistance is low. The ECU checks CTS
voltage and uses the information to help smoothen the engine operation.
.
DTC INFORMATION
PROBABLE CAUSES OF FAILURE
NORMAL OPERATION
Ignition ON
During ignition ON , the measured output voltage value of the
coolant temperature sensor is within the range
DTC DETECTING CONDITIONS
Ignition ON
EMS ECU supply voltage 8-16V
The measured output voltage of the coolant temperature
sensor is higher than the maximum range.
DTC REACTIONS
OBD check lamp continuously ON.
Coolant temperature value set as 110 °C
HEALING CONDITION
Ignition Off/On
Open coolant
temperature sensor
wires
Short to battery of
coolant temperature
wires
Faulty coolant
temperature sensor
Malfunctioning EMS ECU
47