Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual — part 1413
6E2–103
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run
(Cont'd)
Step
No
Yes
Value(s)
Action
4
1. Ignition “OFF”, install a fuel pressure gauge at the
test fitting on the fuel supply line in the engine
compartment. (Use a shop cloth to absorb any fuel
leakage while making the connection.)
2. Ignition “ON”, observe the fuel pressure.
Is the fuel pressure within the specified values, and
does it hold steady?
285 - 375 kPa
(43 – 55 psi)
Go to
Step 6
Go to
Step 5
5
Is any fuel pressure indicated?
—
Go to
Fuel
System
Electrical Test
Go to
Fuel
System
Diagnosis
6
Install the switch box J 39021–2 at the injector test
connector and activate an injector.
Did the fuel pressure drop when the injector was
activated?
—
Go to
Step 7
Go to
Step 18
7
Install an injector test light at the #2 cylinder injector
harness connector.
Does the light blink when the engine is cranked?
—
Go to
Step 8
Go to
Step 24
8
1. Ignition “ OFF”.
2. Disconnect the 11-pin connector at the ION sensing
module.
3. With a test light to B + , probe each of the 6 exposed
ION sensing module pins, one at a time, while the
engine is cranked. (Use the gray narrow Metri - Pak
flexible female connector from the J - 35616 kit to
make the pin accessible.)
Does the light flash at each pin when the engine is
cranked?
—
Go to
Step 12
Go to
Step 9
9
1. Remove the 4-pin connector at the ION sensing
module.
2. Ignition “ ON”.
3. Use a test light at the harness connector to verify
that the module is being supplied with B + and
ground.
Was a problem found?
—
Go to
Step 10
Go to
Step 11
10
Repair the open ignition feed circuit or ground circuit to
the ION sensing module.
Is the action complete?
—
Verify repair
—
11
Repair the ION sensing module.
Is the action complete?
—
Verify repair
—
12
1. Reconnect the ION sensing module 11-pin
connector.
2. Remove the electrical connector from each coil.
3. With a test light to B+, probe each of the coil
connectors at the wire which runs to the ION
sensing module.
Does the light flash at each coil connector when the
engine is cranked?
—
Go to
Step 14
Go to
Step 13
13
Check for an open circuit between the coil and ION
sensing module.
Is the action complete?
—
Verify repair
—
6E2–104
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run
(Cont'd)
Step
No
Yes
Value(s)
Action
14
1. Ignition “ON”.
2. While the coil connectors are disconnected, touch
each coil connector’s ignition feed terminal with a
grounded test light (the ignition feed wire is YEL
tracer).
Did the test light illuminate?
—
Go to
Step 16
Go to
Step 15
15
Repair the open ignition feed circuit.
Is the action complete?
—
Verify repair
—
16
While the coil connectors are disconnected, touch
each connector’s secondary ground terminal with a
test light to B +. (The ground wires are black.)
Did the test light illuminate at each coil connector?
—
Go to
Step 18
Go to
Step 17
17
Repair the open secondary ground circuit.
Is the action complete?
—
Verify repair
—
18
1. Test the fuel for contamination.
2. If a problem is found, clean the fuel system and
correct the contaminated fuel condition as
necessary. Replace the fuel filter and replace any
injectors that are not delivering fuel (see Injector
Balance Test).
Was a problem found?
—
Verify repair
Go to
Step 19
19
1. Remove any ignition coil and install a spark tester at
the spark plug end of the coil.
2. Observe the tester while the engine is cranking.
Was a crisp, blue spark observed? Only one or two
sparks followed by no result is considered the same as
“No Spark”.
—
Go to
Step 21
Go to
Step 20
20
Replace the ignition coil, and return to Step 19 to test
the remaining coils.
Is the action complete?
—
Verify repair
—
21
Repeat Step 19 for each coil. Remove only one coil at a
time, and reinstall each coil on its spark plug after
testing, but do not refasten coils with screws at this
time.
After all coils have passed the spark test, does the
engine start?
—
Refasten all
coils with
their screws
Go to
Step 22
22
1. Remove the spark plugs from all cylinders.
2. Visually inspect the spark plug electrodes.
3. Replace any spark plugs with loose or missing
electrodes or cracked insulators.
Did your inspection reveal any spark plugs exhibiting
excessive fouling?
—
Correct the
fouling
condition
Go to
Step 23
6E2–105
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run
(Cont'd)
Step
No
Yes
Value(s)
Action
23
Refer to
Engine Mechanical Diagnosis to diagnose the
following conditions:
D
Faulty or incorrect camshaft drive belts
D
Leaking or sticky valves or rings
D
Excessive valve deposits
D
Weak valve springs
D
Incorrect valve timing
D
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
6E2–106
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Engine Cranks But Will Not Run
(Cont'd)
Step
No
Yes
Value(s)
Action
31
1. At the injector (male) side of the gray connector
mentioned in step 25, connect an ohmmeter
between the ignition pin and one of the driver circuit
pins.
2. Check for continuity in the circuit.
3. Repeat for each injector circuit. The readings
should be approximately equal to the specified
value for injector resistance.
Was a problem found?
12.5
W
Verify repair
Go to
Step 8
32
Repair the ignition feed circuit.
Is the action complete?
—
Verify repair
—
33
Replace the PCM.
IMPORTANT: The replacement PCM must be
programmed.
Refer to
ON-Vehicle Service in Power 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
—
34
1. Raise the vehicle and disconnect the CKP sensor
harness.
2. Ignition “ON”.
3. With a test light to ground, probe the harness
ignition feed terminal.
Did the light illuminate?
—
Go to
Step 36
Go to
Step 35
35
Check the ignition feed wire between the sensor and
the PCM for a short to ground or open circuit.
Is the action complete?
—
Verify repair
—
36
1. Ignition “ON”.
2. At the CKP harness connector, connect a test light
between the ignition and ground terminals.
Did the light illuminate?
—
Go to
Step 38
Go to
Step 37
37
Check the sensor ground circuit for an open or short to
voltage.
Is the action complete?
—
Verify repair
—
38
Check the signal circuit between the sensor and the
PCM for a short to ground, short to voltage, or an open.
Was a problem found?
—
Verify repair
Go to
Step 39
39
Replace the CKP position sensor.
Is the action complete?
—
Verify repair
Go to
Step 33
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст