Workshop Manual

6E–105
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run (Cont'd)
Step NoYesValue(s)Action
23 Refer to Engine Mechanical Diagnosis to diagnose the
following conditions:
B Faulty or incorrect camshaft drive belts
B Leaking or sticky valves or rings
B Excessive valve deposits
B Weak valve springs
B Incorrect valve timing
B Leaking head gasket
Is the action complete? — Verify repair Go to Step 25
24 Observe the “Engine Speed” data display on the Tech 2
while cranking the engine.
Is the engine RPM indicated?
— Go to Step 25 Go to Step 34
25 1. Disconnect the 7-pin gray connector at the rear of
the air filter beneath the point where the air duct
attaches to the MAF sensor.
2. Ignition “ON”.
3. Using a test light connected to ground, probe the
ignition terminal at the PCM (female) side of the
7-pin connector.
Is the test light “ON”?
— Go to Step 26 Go to Step 32
26 1. At the PCM (female) side of the connector, connect
a test light between the ignition + terminal and one
of the injector driver circuits at the same connector.
2. Ignition “ON”.
3. Observe the test light, and repeat the test for each
injector driver circuit.
Did the test light stay on when checking any of the 6
injector driver circuits?
— Go to Step 27 Go to Step 29
27 1. Ignition “OFF”, disconnect the PCM.
2. Ignition “ON”, observe the test light.
Is the test light “ON”?
— Go to Step 28 Go to Step 33
28 Locate and repair the short to ground in the injector
driver circuit.
Is the action complete?
— Verify repair —
29 1. Using the same test location as in step 26, connect
a test light between the ignition terminal and one of
the driver circuits.
2. Crank the engine and observe the test light.
3. Repeat for each injector driver circuit.
Did the light blink during the test for each circuit?
— Go to Step 31 Go to Step 30
30 Check for an open injector driver circuit.
Was a problem found?
— Verify repair Go to Step 33