ENGINE MANAGEMENT SYSTEM
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After making sure that engine is cold, relieve fuel pressure as follows.
• Place vehicle gear in ‘Neutral’.
• Disconnect fuel module electrical coupler from vehicle harness.
• Start engine and run till it stops due to lack of fuel. Repeat ignition key ON and OFF for 2 ~ 3
times of about 3 seconds each time to relieve fuel pressure in lines. Fuel Connections are
now safe for servicing.
• Upon the completion of servicing, Connect Fuel Module Connector to Vehicle Harness.
7. Fuel Leakage Check Procedure:
After performing any service on fuel system, check to make sure that there are no fuel leakages
as below.
• Fill about 3 ~ 5 liters of fuel in tank.
• Turn Ignition key to ON position for 3 seconds (to operate fuel pump) and then turn to OFF
position. Repeat this for 3 ~ 4 times to apply fuel pressure in fuel lines.
• In this state, check to see that there are no fuel leakage from any part of fuel system (Fuel
Tank, Hoses, Hose Joints, etc)
8. Handling – DOs and DONTs:
FUEL MODULE HANDLING
ACTION REASON
DO NOT: Drop Fuel Module on Floor Could cause internal damage to Fuel
Pump.
DO NOT: Run Fuel Pump Dry (without fuel
at pump inlet/ strainer) ensure atleast 3
litres of gasoline is present in the fuel tank
Caused internal damage to Fuel Pump
DO NOT: Damage the strainer during
servicing, insertion of fuel module in fuel
tank
Contamination enters fuel pump thru
damaged strainer damages the Fuel
Pump
DO NOT: Disassemble Fuel Pump and
regulator internal parts out side Delphi
premises.
DO NOT: Do any adjustments on pressure
regulator and pump except for
replacement.
Warranty void.
DO NOT: Use module harness for hold/
carry fuel module.
DO NOT: Pull Wiring Harness in vertical
direction to module cover
Wiring Harness Breakage/ Fuel Pump
Power disconnection
DO NOT: Use damaged/ distorted hose
clamps.
Can cause fuel seepage/ leakage.
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