Workshop Manual

6E–110
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Fuel System Electrical Test (Cont'd)
Step NoYesValue(s)Action
11 Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed. Refer to On-Vehicle Service in
Powertrain Control Module and Sensors for
procedures.
And also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the action complete?
— Verify repair —
12 1. Reconnect the fuel pump relay.
2. Disconnect the fuel pump electrical connector at the
fuel tank.
3. Using a test light connected to ground, probe the
fuel pump feed wire (harness side).
4. Command the fuel pump “ON” with a Tech 2.
Did the light illuminate for 2 seconds?
— Go to Step 15 Go to Step 13
13 1. Honk the horn to verify that the horn relay is
functioning.
2. Substitute the horn relay for the fuel pump relay.
3. Leave the test light connected as in step 12.
4. Command the fuel pump “ON” with the Tech 2.
Did the test light illuminate for 2 seconds when the fuel
pump was commanded “ON”?
— Go to Step 17 Go to Step 14
14 1. Re-connect the horn relay in its proper location.
2. Check for a short circuit, blown fuse or open circuit
between the relay and the fuel tank.
Is the action complete?
— Verify repair —
15 1. With the fuel pump electrical connector at the fuel
tank disconnected, connect a test light between the
feed wire and the ground wire (harness side).
2. Command the fuel pump “ON” with a Tech 2.
Did the test light illuminate for 2 seconds?
— Go to Step 18 Go to Step 16
16 Repair the open circuit in the fuel pump ground wire.
Is the action complete?
— Verify repair —
17 1. Re-connect the horn relay in its proper location.
2. Replace the fuel pump relay.
Is the action complete?
— Verify repair —
18 Replace the fuel pump.
Is the action complete?
— Verify repair —