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.
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STEP 1
Connect the smart tester
Turn the ignition ON
Initialise the diagnostic tool
Record the DTC and clear
Turn ignition OFF
Turn ignition ON
Verify if P0001 is present?
Is P0001 present?
Intermittent problem exists
Refer the intermittent problem
inspection procedure
STEP 2
Ignition OFF
Check and confirm the proper
function of 15 A fuse (F15) in
ECU fuse box
Fuel metering unit wiring
harness connector (C35)
DISCONNECTED
Ignition ON
Check the voltage between
between pin 2 of fuel metering
unit wiring harness connector
and battery ground
Examine the open circuit of fuel
metering unit control wire from
EMS ECU
Replace the wiring harness
Clear the DTC and verify
Suspect fuel metering unit
internal failure
Replace high pressure fuel pump
with a new one.
Check and verify for any new
DTC’s
STEP 3
Ignition OFF
Fuel metering unit wiring
harness connector (C35)
DISCONNECTED
EMS ECU wiring harness
connector (C4) DISCONNECTED
Check the continuity between
pin 2 of fuel metering unit
wiring harness connector and
pin 89 of the EMS ECU wiring
harness connector
I
Is the continuity
exists?
Is the value =Vbat?
Examine the open/short to
ground of fuel metering unit
power supply wire from main
relay
Replace the wiring harness
Check and verify for any new
DTC’s
YES
NO
NO
NO
YES
YES
P 0001
153