2000 CHRYSLER CARAVAN engine

TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before ProceedingN
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TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: USE A TEMPERA-
TURE PROBE TO ENSURE
ENGINE TEMPERATURE
IS ACTUALLY BELOW
70*C (160*F).
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TEST NTC-7ACHECKING BOOST PRESSURE SENSOR CALIBRATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST TURN IGNITION ON,
NTC-7A. ENGINE OFF.
USING THE DRB, IS THE VOLTAGE
READ BOOST BETWEEN NO REPLACE THE BOOST
PRESSURE SENSOR 1.7 AND 1.95 PRESSURE SENSOR.*
VOLTAGE. VOLTS?
YES
BOOST PRESSURE
SENSOR OPERATING
NORMALLY.
TEST PASSED.
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TEST NTC-8ACHECKING FUEL TEMPERATURE SENSOR CALIBRATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
KEY ON, ENGINE START AND IDLE THE
START TEST OFF. USING THE ENGINE UNTIL
NTC-8A. DRB, MONITOR THE ENGINE TEMPERATURE
ECT SENSOR INPUT. REACHES 70*C
(160*F).
NOTE: IF ENGINE TEMP USING THE DRB, IS THE FUEL
IS ABOVE 70*C READ THE FUEL TEMPERATURE NO REPLACE THE FUEL
(160*F), ALLOW THE TEMPERATURE SENSOR BETWEEN INJECTION PUMP
ENGINE TO COOL DOWN INPUT. 20*C (70*F) AND ASSEMBLY.*
TO 70*C (160*F). 50*C (120*F)?
YES
COMPARE THE ECT START THE ENGINE DOES THE FUEL TEMP
AND FUEL AND ALLOW IT TO SENSOR READING NO REPLACE THE FUEL
TEMPERATURE SENSOR REACH OPERATING INCREASE STEADILY INJECTION PUMP
INPUTS IN THE TEMPERATURE OF TO 38-60*C ASSEMBLY.*
FOLLOWING STEP. 80*C (195*F). (100-140*F)?
YES
FUEL
TEMPERATURE
SENSOR OPERATING
NORMALLY.
TEST PASSED.
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TEST NTC-9ACHECKING EGR SYSTEM
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START THE ENGINE.
INSTALL THE DRB
AND ACTUATE THE
EGR SOLENOID FOR
2 MINUTES.
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TEST NTC-12ACHECKING THE ENGINE MECHANICAL SYSTEMS
Perform TEST NTC-1A Before Proceeding
NOTES
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TEST NTC-12ACHECKING THE ENGINE MECHANICAL SYSTEMS
Perform TEST NTC-1A Before Proceeding
At this point in the diagnostic test procedure, you have determined that all of theengine electrical
systemsare operating as designed; therefore, theyare not the cause of the driveability problem.
The following additional items should be checked as possible mechanical causes of the problem.
1. ENGINE VALVE TIMING- must be within specifications
2. ENGINE COMPRESSION- must be within specifications
3. CAMSHAFT LOBES- check for abnormal wear
4. ENGINE SPEED SENSOR PICK-UP- check flywheel slots for debris/deterioration
5. ENGINE EXHAUST SYSTEM- must be free of any restrictions
6. ENGINE DRIVE SPROCKET- must be properly positioned
7. POWER BRAKE BOOSTER- no internal vacuum leaks
8. FUEL- must be free of contamination
9. FUEL INJECTOR- plugged or restricted injector
10. FUEL INJECTION PUMP- must be properly timed
NOTE:Always look for any Technical Service Bulletins that may relate to the problem.
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TEST NTC-13ACONTINUED - CHECKING THE TURBOCHARGER OPERATION
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST NTC-13A DISCONNECT THE AIR CONNECT AN AIR
CONTINUED FROM PRESSURE REGULATOR PRESSURE GAUGE
THE PREVIOUS AND SHOP AIR INLINE WITH THE
PAGE. SUPPLY. ACTUATOR SUPPLY
HOSE. FIG. 1
NOTE: AIR PRESSURE NOTE: VEHICLE MUST FAILURE TO DRIVE WITH THE VEHICLE IN
GAUGE MUST BE BE ON FLAT LEVEL VEHICLE ON LEVEL FIRST GEAR, INCREASE
RATED TO AT LEAST ROAD TO PERFORM ROAD COULD RESULT ENGINE SPEED TO RPM
50 PSI. THE FOLLOWINGS IN INCORRECT BOOST INDICATED IN
STEPS. PRESSURE READINGS. FIGURE 2.
MAINTAIN EACH RECORD BOOST
INDICATED ENGINE RPM PRESSURE AT ALL
FOR SEVERAL SECONDS INDICATED ENGINE
UNTIL BOOST PRESSURE SPEEDS.
STABILIZES. FIG. 2
DO RECORDED
REPEAT PREVIOUS READINGS MATCH NO REPLACE THE
STEP FOR SECOND CHART READINGS TURBOCHARGER
GEAR. +OR- 2PSI FOR EACH ASSEMBLY.
GEAR INDICATED?
YES
TURBOCHARGER OK,
TEST PASSED.
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