Remove the fuel pump relay in the engine compartment fuse box.
2.
Start the engine and allow idling until the engine stalls.
3.
After the engine stalls, crank the engine for approximately five seconds to ensure the fuel injection supply manifold pressure has been released.
4.
When fuel system service is complete, Install Fuel Pump Relay.
5.
Cycle key and wait 3 seconds to re-pressurize the fuel system. Check for leaks before starting engine.
NOTE IT MAY TAKE MORE THAN ONE KEY CYCLE TO RE-PRESSURIZE THE FUEL SYSTEM.
6.
Start vehicle and check for leaks.
NOTE IT IS POSSIBLE THAT A DTC MAY BE SET DUE TO THE PUMP RELAY BEING PULLED AND THE ENGINE STARTED AND RUN OUT OF FUEL. IF DTC'S ARE SET, CLEAR ALL DTC'S BEFORE RETURNING VEHICLE TO THE CUSTOMER.
Service Procedure For Manually Checking Fuel Pressure With A Gauge.
1.
Remove the fuel pump relay in the engine compartment fuse box.
2.
Start the engine and allow idling until the engine stalls.
3.
After the engine stalls, crank the engine for approximately five seconds to make sure the fuel injection supply manifold pressure has been released.
4.
Disconnect fuel line at the fuel rail to chassis line pierce point.
a.
If the vehicle is equipped with Quick Release Coupling Push Connector at the fuel rail to fuel line pierce point, separate the coupling by depressing the tabs and pulling on the fuel line.
b.
If the vehicle is equipped with a Spring Lock Coupling Connector using special tool 310-D00S or equivalent
5.
Install the Schrader Valve service tool adaptor listed in the chart in this article.
6.
Install fuel pressure gauge special service tool 310-012 or equivalent.
7.
Install fuel pump relay.
8.
Cycle key and wait 3 seconds to re-pressurize the fuel system. Check for oaks before starting engine.
NOTE IT MAY TAKE MORE THAN ONE KEY CYCLE TO RE-PRESSURIZE THE FUEL SYSTEM.
9.
Start and run engine to surge air from fuel system (air trapped in the fuel system may effect test results).
10.
Perform normal diagnosti35 ann service repairs as needed.
11.
After fuel system service is complete, relieve fuel system pressure using fuel pressure gauge relief valve.
12.
Remove special service tools
13.
Re-connect fuel system lines
14.
Cycle key and wait 3 seconds to re-pressurize the fuel system. Check for leaks before starting engine.
NOTE IT MAY TAKE MORE THAN ONE KEY CYCLE TO RE-PRESSURIZE THE FUEL SYSTEM.
15.
Start vehicle and check for leaks.
NOTE IT IS POSSIBLE THAT A DTC MAY BE SET DUE TO THE PUMP RELAY BEING PULLED AND THE ENGINE STARTED AND RUN OUT OF FUEL. IF DTC'S ARE SET, CLEAR ALL DTC'S BEFORE RETURNING VEHICLE TO THE CUSTOMER.
Service Tools Required Chart
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 404000, 490000, 497000, 499000, 603300, 607000, 698298
