2000 CHRYSLER CARAVAN Service Manual

TEST NTC-11CCONTINUED - CHECKING RADIATOR FAN OPERATION
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST NTC-11C
CONTINUED FROM USE AN OHMMETER IN
THE PREVIOUS THE FOLLOWING
PAGE. STEPS.
MEASURE RESISTANCE
BETWEEN RAD FAN IS THE RESISTANCE NO REPLACE RAD FAN
RELAY #1 TERMINALS BELOW 5.0 OHMS? RELAY #1.*
5 AND 8.
FIG.1
YES
MEASURE RESISTANCE
DISCONNECT THE RAD BETWEEN RIGHT SIDE IS THE RESISTANCE NO REPAIR OPEN RIGHT
FAN MOTOR HARNESS FAN HARNESS BELOW 5.0 OHMS? SIDE RAD FAN MOTOR
CONNECTOR.** CONNECTOR CAVITY 1 GROUND.*
AND GROUND. FIG.2
YES
MEASURE THE BETWEEN THE RAD REPAIR THE OPEN
RESISTANCE OF THE FAN RELAY #1 AND IS THE RESISTANCE NO RIGHT SIDE RAD FAN
RIGHT SIDE RAD FAN THE RIGHT SIDE RAD BELOW 5.0 OHMS? MOTOR SUPPLY
SUPPLY CIRCUIT... FAN MOTOR. FIG.1 CIRCUIT.*
AND 2
YES
REPLACE THE RIGHT
SIDE RAD FAN
MOTOR.*
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TEST NTC-11DCHECKING RADIATOR FAN OPERATION
Perform TEST NTC-11A Before Proceeding
FIG.1
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TEST NTC-11DCHECKING RADIATOR FAN OPERATION
Perform TEST NTC-11A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST STOP LOW SPEED FAN
NTC-11D. ACTUATION.
KEY OFF.
SUBSTITUTE THE RAD PERFORM THE DO BOTH FANS CYCLE YES REPLACE THE
FAN #1 RELAY WITH "LOW SPEED FAN" ON AND OFF? INITIAL RAD FAN #1
A KNOWN GOOD ACTUATOR TEST. RELAY.*
RELAY.
NO
DISCONNECT THE
DISCONNECT RAD FAN LEFT SIDE FAN
#1 RELAY HARNESS MOTOR HARNESS
CONNECTOR.** CONNECTOR.**
USING AN OHMMETER, REPAIR THE SHORT
MEASURE THE GROUND IS THE RESISTANCE YES TO GROUND BETWEEN
CKT AT CAVITY 8 TO BELOW 10.0 OHMS? THE LEFT SIDE
GROUND. MOTOR AND RAD FAN
FIG.1 #1 REKAY.
NO
DISCONNECT THE USING AN OHMMETER, REPAIR THE RIGHT
RIGHT SIDE FAN MEASURE CAVITY 5 IS THE RESISTANCE YES SIDE FAN SUPPLY
MOTOR HARNESS TO GROUND. BELOW 10.0 OHMS? CIRCUIT FOR A
CONNECTOR.** SHORT TO GROUND.*
FIG.1
NO
CHECK RIGHT SIDE IS ANYTHING
FAN MOTOR FOR PREVENTING THE FAN YES REPAIR AS
BINDING OR DEBRIS MOTOR FROM NECESSARY.
WHICH MAY PREVENT TURNING?
FAN OPERATION.
NO
REPLACE THE RIGHT
SIDE FAN MOTOR.*
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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-13ACHECKING THE TURBOCHARGER OPERATION
Perform TEST NTC-1A Before Proceeding
FIG.1
FIG.2
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TEST NTC-13ACHECKING THE TURBOCHARGER OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: THE EXHAUST CHECK THE AND THE
START TEST SYSTEM MUST BE TURBOCHARGER OUTLET TURBOCHARGER INLET
NTC-13A. FREE FROM ANY HOSE BETWEEN THE HOSE BETWEEN THE
RESTRICTIONS TO TURBOCHARGER AND THE TURBOCHARGER AND
PERFORM THIS TEST. INTAKE MANIFOLD... THE AIR CLEANER...
FOR LOOSE
CONNECTION, DAMAGE ARE ANY OF THESE YES REPAIR OR REPLACE
OR RESTRICTIONS. CONDITIONS AS NECESSARY.
EVIDENT?
FIG. 1
NO
CHECK THE WASTEGATE
ACTUATOR SUPPLY HOSE ARE ANY OF THESE YES REPAIR OR REPLACE
FOR LOOSE CONDITIONS AS NECESSARY.
CONNECTION, DAMAGE EVIDENT?
OR RESTRICTIONS.
NO
DISCONNECT THE USING AN AIR THE WASTEGATE
ACTUATOR SUPPLY PRESSURE REGULATOR, ACTUATOR SUPPLY
HOSE FROM THE CONNECT AN AIR HOSE HOSE.
INTAKE MANIFOLD. TO THE DISCONNECTED
FIG. 2 END OF... FIG. 2
START AT 0 PSI AIR NOTE: THE ACTUATOR
PRESSURE AND SLOWLY ARM SHOULD REMAIN FULLY OPEN AT
INCREASE TO 45 PSI CLOSED UNTIL AIR 34-40 PSI.
WHILE MONITORING THE PRESSURE REACHES
ACTUATOR ARM. FIG.2 17-20 PSI...
DID THE WASTEGATE
ACTUATOR UNSEAT YES CONTINUE TEST
AND FULLY OPEN AS NTC-13A ON THE
DESCRIBED? NEXT PAGE.
NO
DISCONNECT THE SHOP MANUALLY MOVE DOES THE WASTEGATE
AIR SUPPLY. REMOVE WASTEGATE ARM FROM ARM MOVE EASILY YES REPLACE THE
E-CLIP AND CLOSED TO FULLY WITHOUT WASTEGATE
DISCONNECT ACTUATOR OPEN POSITION. RESTRICTION? ACTUATOR.
ROD FROM ARM. FIG.2 FIG. 2
NO
CLEAN WASTEGATE ARM
OR WASTEGATE SHAFT
AS NECESSARY.
IF OK, REPLACE
TURBOCHARGER ASSLY.
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TEST NTC-13ACONTINUED - CHECKING THE TURBOCHARGER OPERATION
FIG. 1
FIG. 2
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